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    Bulletin of Botanical Research 1995 Vol.15
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    ON THE FLORISTICS OF ARTEMISIA L.IN THE WORLD
    Ling Yeou-ruenn
    Bulletin of Botanical Research    1995, 15 (1): 1-37.  
    Abstract292)      PDF(pc) (2489KB)(229)       Save
    The paper presents summarily:1. On the phylogeny of Artemisia L. and its species-generic geography in theworld.Author divided the genus into:Subgen. a. Artemisia. incl, Sect. 1). AbSintkiumDC., Sect. 2). Abrotanum Bess., Sect. 3). Artemisia, Sect. 4). Viscidipubes Y.R. Ling and Sect. 5). Albibractea Y. R. Ling;Subgen. b. Dracuneulus (Bess.)Peterm., incl. Sect. 6). Dracunculus Y. R. Ling, Sect. 7). Intilobus Y. R. Lingand Sect. 8. Turaniphytum (Pci jab.) Y. R. Ling, and Subgen. c. Artanacctum(Rzazad.) Y. R. Ling L. Jiang, incl. Sect. 9. Artanacetum (Rzazad.) Pci jab.in the world., and author also discussed, in the genus Sect. Asbinthium DC. isthe most primitive one, in which the ancestor should be derived from pro-Artemisia. i. e. Matricaria-form species, in Trib. Anthcmideae from speciationcentre of N. Asia in Upper Oligocene or Lowers Eocene of Tertiary Era. Nowmost species of the section distribute mainly in subholarctic and temperate areas inN. Hemisphere. Sect. Abrotanum Bess. is more primitive, but also active one, from that ancestor many ancestors of other sections of the genus were derived.Now most species of it are mainly in temperate and subtropical areas, and a fewto N. subholartic or tropical area or even to S. Hemisphere. Sect. Artemisia is adeveloped section with the most amounts of species and world-wide distributionof the genus. Both Sect. Viscidipubcs Y. R. Ling and Sect. Albibractea Y. R.Ling are more specialized and more advanced sections in Asia. But most species ofthe former distribute mainly in Hengduang-Himalayan Mis. of China. only a fewspecies extendly distribute in E. and S. Asia, and the latter is the distribution atlower altitudes in S. and S.-E. Asia. Sect. Dracunculus Bess., Sect. LatilobusY. R. Ling and Sect. Turaniphytlim (Pci jab.) Y. R. Ling are much moreadvanced. But Sect. Dracunculus Bess. is distributed in droughty or semidroughtyareas Df N. hemisphere and N. Africa. Sect. Turaniphytum (Pci jab.) Y. R. Lingis only in C. W. Asia. and Sect. Latilobus Y. R. Ling is in temperate andsubtropical, but humid areas in N. hemisphere. Besides, the species of Sect.Artanacctum (Rzazad.) Pcljak. distribute in N.-E. Asia, or discontinuouslydistribute in N.-E. Asia and N.-W. W. of N. America.The opinions are based on the researches of Species-generic Morphology, Geography, Palaeontology and also supplemented by the Cladistic Analysis and theChemotaxonomy on the constituents from essential oils of the genus. In addition, those also get support from the researches of chromosomes and pollen grains.2. On. the historic and floristic geographies of Art6misia L. in the world.Author provided that after the ancestor of the genus was derived in N. Asia, it got a good development in Oligocene or Lower Tertiary and Quaternary Eras, and the present geographical distribution of the primitive species of the genus wasaccompanied by the speices migration during the ErAs. especially by the advancingPolar Ice age cap. At that time.the ancestral and primitive species of the genusimmigrated, perhaps, from the speciation centre along the following three importantroutes to everywhere. The lst one is the western route, where the species migratedfrom speciation centre to Europe and gradually trended towards E. of N.America but a part of the species is via S. Europe to N. N.-W. Africa, asin Artemisia absinthium L. and A. biennis Willd. The 2nd is the eastern route, in itthe ancestral and primitive species migrated throughout Siberia, N.-E. Asia andentered W. of N. America, as in A. frigida Willd. and A. campestris L. etc. InIce Age some of the species also eXtended towards Central or even to S.America, as in A. douglasiana Bess. The southern route is the 3rd one, in whichthe species were spreaded to Central and Eastern Asia first, later towards S. andS.-E. Asia. In the southern migration it have made important, so-called 'threeoblique mass distributional zones' in China, except a few wide-distributionalspecies. The 1st zone is located at the west area of the line from W. Hsingan Mts. running obliquely through E. Qingling Mts. to E. Hengduang Mts. Most species of Sect. Absinthium DC. and Sect. Abrotanum Bess, are in the area;the 2nd one is at the east area of the line from W. Hsingan Mts., via central-west of China, but into W. Hengduang and C. Himalayan Mts. Most species of Sect. Artemisia and Sect. Latilobus Y. R. Ling distribute there,. but most species of Sect. Viscidipubes Y. R. Ling are in the south-west, only a few towards the east, south-east and south of the zone in China, and the species of Sect. Albibractea Y. R. Ling are in the east, south-east and south of the zone;the 3rd one is at the west area of the line from W. Hsingan Mts., throughout obliquely N. China to W. Kunlun Mts. It reflects the distributions of most species of Sect. Dracunculus Bess. Also a few species from southern route ran into S. Asia or via W. Asia and Arab Peninsula into N.-E., then to E. & S. Africa. Besides, a few early escaped species from Asia ran into Pacific Islands and developed solitarily by the geographical isolation later. As the result of above mentioned, although there are 349 species and 69 varieties in the world, the present distributional centre of the genus is in Eurasia and N. America, where there are 319 species, 67 varieties, and the distributional mass centre of it should be between the area of S., S.-W. & S.-E. Russia, Kazakhstan and-W. & N.-E. China, because there are about 248 species of 6 million km 2. Besides, there was a refuge of the genus in Ice Age and also were the secondary speciation and diversified centres, as well as are the second distributional mass centre in Hengduang-Himalayan Mts., where many secondary regional endemic species had been developed during or after the Ice Age. Now there distribute 118 species and 64 varieties, including, many endemic and a few survival species, in the area of 750 thousand km2.With exception of above mentioned, many vicarious species are easily found from the north to the south in above zones by the species developed in the migration. In Sect. Artemisia and Sect. Latilobus Y. R. Ling, those usually distribute continuously or overlappedly, but in other sections those are mainly isolated-form or platform and jumpy distributions.Now author divides the districts of the floristic geography of Artemisia L. into 5 kingdoms encompassing 21 subkingdoms and 42 regions in the world according to the researches of the species-generic and historic geographies for the genus. The districts and distributed reprensentations of Artemisia L. see the 3rd Chapter of the paper.
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    A NEW TAXA OF DIPSACUS L.FROM CHINA
    Ai Tie-min, Yang Lian-jn, Feng Xue-feng
    Bulletin of Botanical Research    1995, 15 (1): 38-42.  
    Abstract450)      PDF(pc) (326KB)(217)       Save
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    A NEW TAXON AND THREE NEW RECORD OF GENERA(ORCHIDACEAE) FROM YUNNAN, CHINA
    Tsi Zhan-huo
    Bulletin of Botanical Research    1995, 15 (1): 43-46.  
    Abstract241)      PDF(pc) (260KB)(154)       Save
    A species, Coelogyne malipoensis Tsi. new to science and three genera, Pennilabium J. J. Sm., Parapteroceras Averyanov and Smitinandra Holttum, newto China are described.
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    A NEW VARIETY OF MYRSINE
    Zhang Ji-min
    Bulletin of Botanical Research    1995, 15 (1): 47-48.  
    Abstract253)      PDF(pc) (114KB)(157)       Save
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    A NEW VARIETY OF CERASTIUM (CARYOPHYLLACEAE)FROM LIAONING
    Han Quan-zhong, Zhou Li-hua
    Bulletin of Botanical Research    1995, 15 (1): 49-50.  
    Abstract267)      PDF(pc) (124KB)(163)       Save
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    A NEW GRADATION OF ASTRAGALUS L
    Zhu Xiang-yun, Chen Jia-rui
    Bulletin of Botanical Research    1995, 15 (1): 51-52.  
    Abstract297)      PDF(pc) (141KB)(142)       Save
    In this paper, a new gradation, Astragalus membranaceus (Filch.ex Link) Bge.subsp. pallidipupureus (Hsiao) X. Y. Zhu et C. J. Chen, is proposed. At thesame time, the population variation is also discussed.
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    A NEW VARIETY AND A NEW RECORD OF THE FAMILY POTTIACEAE FROM CHINA
    Jia Xue-yi, Gao Chein
    Bulletin of Botanical Research    1995, 15 (1): 53-54.  
    Abstract264)      PDF(pc) (146KB)(114)       Save
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    A NEW RECORD SPECIES OF CHRYSOMYXA IN CHINA
    Xue Yu, Hou Wei-hong, He Bing-zhang, Liu Nai-cheng
    Bulletin of Botanical Research    1995, 15 (1): 55-56.  
    Abstract328)      PDF(pc) (113KB)(133)       Save
    A new record of Chrysomyxa komarovii Tranz. was collected and describedfrom Heilongjiang province. The specimen of the new record is deposited inNortheast Forestry University and the Mycological Herbarium of Institute ofMicrobiology, Academia Sinica, Beijing.Heilongjiang:Da Xingan Mountain, 11June 1991, Xue Yu et al, No. 00035(Specimen deposited in the Northeast Forestry University and the MycologicalHerbarium of Institute of Microbiology, Academia Sinica, Beijing).
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    SCAPHOPHYLLUM NEW TO MAINLAND OF CHINA AND TETRODONTIUM BROWNIANUM(DICKS.)SCHWAEGR.NEW TO CHINA
    Fu Xing, Gao Chien, Li Qian, Fang Jia-sheng
    Bulletin of Botanical Research    1995, 15 (1): 57-60.  
    Abstract247)      PDF(pc) (242KB)(138)       Save
    Tetrodotium brownianum (Dicks.) Schwaegr. from Sichuan Province is reportednew to moss flora of China. The hepaticae genus Scaphophyllum.with a species S.speciosum (Horik.) Inoue from Tibet and Yunnan Province is new to Mainland ofChina. The sporophyte of S. speciosum is reported fDr the first time.
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    STUDIES ON THE DEVELOPMENT OF GAMETOPHYTES OF FERNS FROM NORTHEASTERN CHINA Ⅷ ASPLENIACEAE
    Bao Wen-met, Wang Quan-xi, Aur Chih-wen
    Bulletin of Botanical Research    1995, 15 (1): 61-64.  
    Abstract270)      PDF(pc) (423KB)(184)       Save
    The spore of Camptosorus sibiricus is bilateral and monoleta. with a prominent perine. The patterns of spore gemination is of Vittaria-type (Nayar & Kaur 1971). The germ filaments develop 2-7 cells long, uniseriate or multiseriate. The prothallial development is of the Aspidium-type (Nayar & Kaur 1971). The prothalli are cordate and hairy with median light midrib. The form of hair isvaried. The sex organs are rather small. The antheridial dehiscence is by pore-like opening developed in the cap cell. The neck of archegonia are slander. As mentioned above, the characteristics of Camptosorus sibiricus on the development of the gametophytes are common in a advanced fern type. It is similar with thegametophyte of Phyllitis japonica in the main characters. It seems that they would be at closed phylogeny level in the family Aspleniaceae.
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    SEED MORPHOLOGY OF ATRIPLEX L.FROM CHINA AND ITS TAXONOMIC SIGNIFICANCE
    He Xin-qiang, Li Fa-zeng
    Bulletin of Botanical Research    1995, 15 (1): 65-71.  
    Abstract307)      PDF(pc) (603KB)(379)       Save
    In the present paper the seed morphology of 13 species of Atriplex L. from China were examined.Radicle superior and lateral were defined in this genus by our standards. The micromorphology of seed coat of the genus was reported here for the first time. The seed coat sculpture of these species can be divided into eight types:(1) Smooth (2)Rugulate (3)Ripple (4)Cerebelloid (5)Ravine (6)Bubble, (7) Reticulate (8) Striate. There is the second reticulate or striate ornamentation or not. The results show that the morphological features of seed, such as shape, colour. radicle orientation and the micromorphological features of the seed coat, can supply characteristic significance to the taxonomy of the genus.
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    ANATOMICAL STUDIES ON PETIOLE OF HERACLEUM FROM CHINA
    He Xing-jin, Pu Fa-ding, Wang You-ping, Wang Ping-li
    Bulletin of Botanical Research    1995, 15 (1): 72-83.  
    Abstract229)      PDF(pc) (784KB)(210)       Save
    Southwesten of China is one of the two centers of distribution of Heracleum in the world. In this paper, fifteen species distributed in this area was dissected and observed. The anatomical characters of 15 species are very diverse and listed in Table 1 and Figure 1 to 3.Comparing the petiolar anatomy of populations belonging to 4 species which distributed in different area or altitude, it is shown that the anatomical charecters of petioles of Heracleum possess certain stability except with some variations in numbers of vascular bundles and size of the cross section within a species, andcan be used as a useful taxonomical evidence.According to the pattern of vascular bundles'distribution, combined with theshape of the cross section, the presence and shape of the groove on the adaxialside, smooth or undulate margin and the presence and shape of pith cavity, the anatomical structures of petioles of 15 species are divided into 5 forms (see fig. Ito 3). According to the charecters of 5 forms petiDles, combined with charecters ofeXterior shape, pollen morphology and cytology, the probable evolutionary relationships of the 5 forms of petiolar anatomy and the classification to genus Heracleumare discussed.In the end, by analysing the regular of distribution of Heracleum in China. the species with the 5 forms of petiolar anatomy and many other species of Herucleumare concentrated in Hongduan Montains of Southwesten in China. As a result, Hongduan Montains is not only the center of abundance but also the biggest centerof diversity of this genus.
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    THE GROWTH OF THE POLYSACCHARIDE WALL-PRECURSOR BODY AND POLLEN TUBE OF LIRIODENDRON L.
    Fan Ru-wen, Yin Zeng-fang, HuangJin-sheng
    Bulletin of Botanical Research    1995, 15 (1): 84-91.  
    Abstract255)      PDF(pc) (870KB)(181)       Save
    The morphogenesis, structure and hpysiological function of the polysaccharidewall-precursor bodies during pollen generation and pollen tube growth of Liriodendron chinense and L. tulipifera on alien stigma and stylar were observedand described. 1. Polysaccharide wall-precursor bodies have three shapes:polysaccharide particles, coated vesicles and vesicles;2. Polysaccharide particlesbegan generating during mono-nucleus pollen stage, and reached its peak duringpollen tube extending stage. Polysaccharide wall-precursor bodies were formedthrougth disintegration of starch plasts, protein bodies and lipid drops undercontinual cooperation of dictyosome, endoplasm reticulum and mitochondrium. 3.The shapes of polysaccharide particles changed along with their developmentalstage. During early stage they gathered into a group, and the vesicles in it at firstaPPeared as electron transparent vesicles, then became polyhedral bound byProtein, no-coated polysaccharide particles or coated polysaccharide particles tviththorns conjoined micro-grain or micro-fibril in the late stage;4. The polysaccharide particles moved into the tip of tube, then the fused or free polysaccharideParticles through passed conical ER and fused with the wall in the extendingregion. at last contributed their precursor materials. Some of the coated vesiclesand vesicle groups moved into the tube secondary tip, and were released out ofplasma membrane, then were fused with the inner wall pollen tube and contributedtheir precursor mat6rials. Others moved into tube tip. and contributed theirmembrane fragment in the extending region of wall. Final, the relationship bet\veenincompatiblility and ultrastructure was discussed.
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    THE STUDY ON VARIATIONS OF INTERNAL STRUCTURE AND THE ACTIVE CONSTITUENT CONTENTS IN THE MAIN ROOTS OF TWO SPECIES OF ASTRAGALUS
    Wang Er-tong, Liu Mei, Liu Ming-yuan
    Bulletin of Botanical Research    1995, 15 (1): 92-96.  
    Abstract306)      PDF(pc) (340KB)(161)       Save
    Acording to the study on variations of the internal structure and the activeconstituent contents in the main roots of Astragalus membranaceus (Fish.) Bungeand A. membranaceus (Fish.) Bge. var mongholicus (Bge.) Hsiao, we found thatthe changes in the internal structure and the nutrient accumulation correspondedparticularly with their different rhythm of individual development. The contents ofthe two active constituents. Astragalaside Ill and total APS, also followed theirdifferent latvs of alternate vegetative growth and reproductive growth and positivelycorrelated with the nutrient accumlation and consumption trends;Furthermore, thecontents came to the summit before germination and after wilting.
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    THE STUDY OF THE REALATIONSHIP BETWEEN LEYMUS CHINENSIS POPULATION GROWTH AND ENVIRONMENT ON THE GRASSLAND IN THE NORTHEAST CHINA
    Zhang Chong-bang, Zhang Zhong-heng, Yang jing-chun
    Bulletin of Botanical Research    1995, 15 (1): 97-103.  
    Abstract196)      PDF(pc) (416KB)(155)       Save
    This Paper studied the growth law of Leymus chinensis and effect of environment factors on the Leymus chinensis grassland in the northeast China with the grertheory. The results indicated:the growth of Leymus chinensis population has adistinCt seasonal variation, it grows best from July to August, the growth rate isfrom 0.2-0.403g/m 2·d. Among nine environment factors, Hydrolyted nitrogen, quick acting postassium, active organic matter, temperature, PH and effective Phosphorus to Leymus chinensis growth kaye the best connected coefficients, those of hydrolyted nitrogen, quick acting posstassium and active organic matter arepromoted factors, PH is restrictive factors. The best model of Leymus Chinensisgrowth is y=4.74X 1+6.15X 2+2.48X 3-73.64.
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    RESEARCH ON THE YELLOWS OF S. MATSUDANA AND S.BABYLONICA CAUSED BY DIFFERENT SOIL CONDITIONS
    Guan Ji-yi, Zhao Sui-lin, Huang Wen-tian
    Bulletin of Botanical Research    1995, 15 (1): 104-109.  
    Abstract254)      PDF(pc) (397KB)(103)       Save
    S. babylonica and S. matsudana are not only fine ornamental trees in cities butalso important afforestation tree species of shelter forest and stand for timber.These two species have yellows of different extent in Chernozem of Harbinand Daqing. Leaves, at least. become yellow, white, thin, and small when openingup. At most serious condition, leaves drop off early;the top of a tree becomeswithered;whole tree becomes dead finally, Generally total leaves of most of theseedlings become yellow. The yellows influences normal growth of big seedlingsand seedling quality. so causes certain losses in nursery. Production departementputs forward pressing demand to solve the Problem.We studied the yellowing of S. babylonica and S. matsudana according toproductive need from 1989 to 1992. Through study we ruled out the cause ofinfected disease firstly and firmly believed that it was because of bad ecologicalcondition.Then through further research we found that the cause was soilobstruct.Through the measurement of the pattern of soil profile foue andCaCO 3 content, Hcf reaction, PH, ofganic matter, effective Fe and Mn of soil ofdifferent layers, and through the measurement of chlorophyll content, total Fe-content of the yellowing and normal leaves and through the dressing of be to theyellowing seedings, we concluded finally that soil is short of effective Fe becauseo f a great quantity of CaCO 3 and high soil PH, which affects Fe absorption ofroot system, Fe movement in tree and its effectiveness. Soil Fe can not meet theneed of normal growth of S. babylonica and S. matsudana, So they express chlorosis.This study puts fortvard several suggests to provent chlorosis of S. babylonica and S. matsudana. This chill have important guidillg significance for production.
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    CLIMATE SUITABILITY OF AMERICAN CINSENG INTRODUCED IN NORTHERN CHINA
    Zhang Shi-zeng, Chen Ya-zhi, Bac Qing
    Bulletin of Botanical Research    1995, 15 (1): 110-117.  
    Abstract463)      PDF(pc) (520KB)(137)       Save
    The aim of the article is to study the relation between the climate factors andthe distriubution of Ginseng (Panax QuinquefOlius Linn.) that was introduced inNorthern China. The method of the aim is principle component analysis (PCA).The variables are 12 climate and geographic values which come from 14 areasintroduced the Ginseng in Heilongiiang Province. They can be made up primarydata matrix of 14 ×12 so that classification and ordination can be done by PCA.The result shows that the distribution pattern of the Ginseng in the Province is anassemble situation which has 2 kinds of groups;that main ecological factors whichaffect the Pattern are thermal and hydraulic condition and its constitution;that the adequaCy climate value scope for introducing the Ginseng in the Province is aridgradient < 1;annual Precipitation > 460mm;warm index > 58℃ or 2300℃ < accumulation temperature ≤ 10℃.
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    DYNAMICS OF ENVIRONMENTAL FACTORS OF PLANTING GINSENG UNDER FORESTS AND EFFECT-BELTS
    Wu De-cheng, Mu Zhao-jun, Bai Song-lin, Lu Zhao-hua
    Bulletin of Botanical Research    1995, 15 (1): 118-128.  
    Abstract258)      PDF(pc) (626KB)(236)       Save
    Based on the theory and methods of forest ecology and meteorology thelocated observations of the environmental factors of planting ginsengs undersecondary forest and effect-belts of 10m, sin, 6m width were carried out. Theresults show that the optimum width of planting ginsengs is 10m.
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    THE EFFECT OF PRECIPITATION ON CORN YIELD AND THE ANALYSIS OF MARGINAL YIELD DFFECT
    Wu Xiu-qing, Hou Zhong-tian, Ge Jia-qi, Wang Hong-yan
    Bulletin of Botanical Research    1995, 15 (1): 129-135.  
    Abstract270)      PDF(pc) (449KB)(160)       Save
    In corn field ecosystem, precipitation is main factor to limit corn yield. Cornyield changes with the amount of precipitation, and gets its highest POint Underadequate water condition, but decreases when it is too dry or too waterlogged.The marginal yield effect of precipitation decreases with the increase ofprecipitation input. which are highly negative correlated, increases with the riseinaccumulated temperature and decreases with the increase of soil organic mattercontent. With the adequately incrasing input of N. P. K and manure, highinarginal yield effect of precipitation can be get. In the areas of enough precipitation and abundant heat resource, with the accordant combination of fertilizers andmanure, the corn yield potential can be thoroughly developed.
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    A REVISION OF THE GENUS RANUNCULUS IN CHINA(Ⅰ)
    Wang Wen tsai
    Bulletin of Botanical Research    1995, 15 (2): 137-180.  
    Abstract297)      PDF(pc) (2910KB)(301)       Save
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    CHINGYUNGIA, A NEW GENUS OF VERBENACEAE FROM CHINA
    Ai Tie min, Yang Lian ju, Tian Jian jun
    Bulletin of Botanical Research    1995, 15 (2): 181-184.  
    Abstract369)      PDF(pc) (280KB)(148)       Save
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    A NEW VARIETY OF DIANTHUS CHINENSIS L.
    Lu De-quan
    Bulletin of Botanical Research    1995, 15 (2): 185-186.  
    Abstract316)      PDF(pc) (97KB)(152)       Save
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    A NEW VARIETY OF SAUSSUREA CHINA
    Wang Shu-yun, Han Quan-Zhong
    Bulletin of Botanical Research    1995, 15 (2): 187-188.  
    Abstract271)      PDF(pc) (104KB)(133)       Save
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    A NEW RECORD SPECIES OF UREDINOPSIS IN CHINA
    Xue Yu, Shao Li-ping, Jin Gui-min
    Bulletin of Botanical Research    1995, 15 (2): 189-190.  
    Abstract262)      PDF(pc) (124KB)(179)       Save
    A new record of Uredinopsis ossiformis Kamel was collected from Jilm province.The specimen of the new recod is deposited in Northeast Forestry University and Mycological Herbarium of Institute of Microbiology, Academia Sinica, Beijing.JiLin:Chang Bai Mountain, 1 September 1991, Xue Yu et al. 00102(Specimen, deposited in the Northeast Forestry University and Mycological Herbarium of Institute of Microbiology, Academia Sinica, Beijing.
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    SOME NEW RECORDED PLANTS FROM ANHUI AND NEW GEOGRAPHICAL DISTRIBUTION
    He Jia-qing, Dong Jin-ting, Zhang Xu-dong
    Bulletin of Botanical Research    1995, 15 (2): 191-194.  
    Abstract220)      PDF(pc) (255KB)(163)       Save
    The persent paper is a supplement to the recently published Flora of Anhui, 13 species. 2 varieties. Among these 9 species. 2 varieties and 2 genera (Salsoa, Malcolmia) are new recorded and 3 species naturalized to Anhui Province.All the specimens concerned are stored in the Herbarium of resource, Anui University (AUR).
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    A REVISION OF ILLICIUM JIADIFENGPI B. N. CHANG
    Lin Qi, Chen San-mao
    Bulletin of Botanical Research    1995, 15 (2): 195-198.  
    Abstract264)      PDF(pc) (296KB)(161)       Save
    Based on the study of 403 specimens of Illicium jiadifengpi B. N. Chang collected in 42 herbaria in China, I. jiadifengpi B. N. Chang is confirmed to be an unique species in China and distribute in Anhui, Zhejiang, Jiangh, Fujinn. Hubei, Hunan, Guangdong and Guangxi. I. jiadifengpi B. N. Chang var. baishanense B.N. Chang et S. H. On is regarded as a new synonym of I. jiadifengpi B. N. Chang. I. minwanense B. N. Chang et S. D. Zhang is reduced to I. jiadifengpi B. N. Chang f. minwanense (B. N. Chang et S. D. Zhang) Q. Lin. I wuyishanum Q.Lin is considered as a synonym of I. jiadifengpi B. N. Chang f. minwanense (B. N.Chang et S. D. Zhang) Q. Lin.
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    A PRELIMINARY CYTOTAXONOMICAL STUDY ON THE CHINESE ARISTOLOCHIA(ARISTOLOCHIACEAE)
    Yu Wei, Huang Lu-qi, Cheng Ching-yung
    Bulletin of Botanical Research    1995, 15 (2): 199-205.  
    Abstract258)      PDF(pc) (611KB)(119)       Save
    This paper reports chromosome numbers and karyotype analysis of 12 Aristolochia species from China for the first time. The results are shown in Table 1 and 2.The general aspects of the chromosome of this genus are small in size, mostly metacentric and submetacentric, the secondary constrictions are nearly all on the long arms, karyotypes are 1A, 2A, 3A, 1B. 2B and considered as symmetric types.Besides the previously reported x=6、7, x=8 is suggested here as one of the basic number of the genus owing to the frequent occurrence of 2n=32 in Subgen.Slphisia. According to the karyotype analysis, species with 2n=32 seem to be allotetraploids.
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    SEED MORPHOLOGY OF GERANIACEAE IN NORTHEASTERN CHINA AND ITS TAXONOMIC SIGNIFICANCE
    Lu Zhao-hua, Cao Wen-zhong, Zhang Yu-lan
    Bulletin of Botanical Research    1995, 15 (2): 206-212.  
    Abstract440)      PDF(pc) (805KB)(357)       Save
    In this psper, the seed coat submorphology and seed morphology of Geraniaceae(2 genus.14 species 1 variety and 1 form) in Northeastem China were studied.the results show that there are many differences between genus Erodium and genus Geranium either seed-coat sculpture (primary and secondary sculpture) or seed morphology (seed shape.length/width ratio). Seed and seed-coat morphology provsde a lot of key information with taxonomy of genus Geranium.The present seed coat and seed morphological classificationis is in accordance with Kitagawa's svstem of Geraniaceae, which was done using other morphological characters.
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    CYMBOPOGON JWARANCUSA(JONES) SCHULT.A SPECIES NEW TO YUNNAN AND ITS CHEMICAL COMPONENTS OF VOLATILE OIL
    Zhang Rong, Xie You-kuan, Su Zhong-wu, Li Cheng-hu
    Bulletin of Botanical Research    1995, 15 (2): 213-214.  
    Abstract231)      PDF(pc) (130KB)(163)       Save
    This paper reported that Cymbopogon jwarancusa (Jones) Schult. is new to Ynnan and the chenical components of its oil was given.The percentage of piperitone is more than 65% and therefore this plant is useful.
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    ANATOMICAL STUDIES ON THE PRIMARY VASCULAR SYSTEM OF THE SEEDLING OF NEGELLA SATIVA L.(RANUNCULACEAE)
    Wang Li jun, Zang You min, Jia Wei ping, Gu An-gen
    Bulletin of Botanical Research    1995, 15 (2): 215-219.  
    Abstract341)      PDF(pc) (425KB)(219)       Save
    The mesarch and diareh siphonostele stage was found in the middle part of the cotyledon node zone of seedling of Nigella sativa. This discovery indicates that seed plants and ferns have a common ancestor in phylogeny.
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    STUDY ON COMMUNITY CHARACTERISTICS OF NATURAL PINUS DENSIFLORA FORESTS IN CHANGBAI MOUNTAIN AREA
    Xu Cheng yang, Zhang Jing, Shen Hai long, Song Lin, Hu Xiang-yi
    Bulletin of Botanical Research    1995, 15 (2): 220-229.  
    Abstract278)      PDF(pc) (676KB)(214)       Save
    The component, life form. regeneration, succession and growth characteristics of natural Pinus densiflora communities (PDC) were analysed. Lacking native species, the element of species was simple in natural PDC in Changbai mountain area. The natural PDC succeeded in prime stage, and its procession direction were deeply affected by disturbance. The pattern was weak aggregative for regeneration populations. Productivity of the hazel-PDC was the highest in severeal main types of PDC, and that of the bush clover-PDC and the grass-PDC were following the former's, that of the daurian rhododendron-PDC was the lowest. Management methods of different types of PDC were also proposed.
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    STUDIES ON THE CLASSIFICATION AND ECOLOGY OF ZOYSIA JAPONICA COMMUNITY INH LIAODONG PENINSULA
    Dong Hou-de, Zhao Li, Chen Zhong-lin, Shao Cheng
    Bulletin of Botanical Research    1995, 15 (2): 230-245.  
    Abstract205)      PDF(pc) (977KB)(268)       Save
    This paper makes close analysis, using formation bable method and quantitative classification method, on the materials obtained from the field investigation of Xiuyan County, Liaodong Peninsula. The Zoysia japonica Formation in this area can be divided into four types of associations, namely, Ass. Zoysia japonica Ass. Zoysia japonica+ Carex nanella. Ass. Zoysia japonica+ Carex napella+ Indigofera kirilowii, and finally Ass. Zoysia japonica+ Carex nanella+ Perennial forbs. This paper discusses into details of the component of species and their life-form, the structure of community and the vertical distribution of biomass of these associations. The principal component analysis (PCA) shows that light intensity in grassy layer of community and the content of organic matter in soil constitute the main natural ecological factors that affect the formation of the associations. The correlative analysis further reveals that the light intensity in grassy layer is positively correlative with aboveground biomass and ear sprouting rate of Zoysia japonica. the organic matter content in soil is negatively correlative with them. The paper also describes the succession law of Zoysia japonica commnunity. It points out that human activity plays very important roles in this succession. proper period and intensity for pasturing, mowing and seed-harvesting will be helpful to make full uses of Zoysia japonica resources.
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    PLANT ROOT EXUDATION AND ITS SIGNIFICANCE IN FORESTRY
    Fan Jun-gang, Fan Guo-ru
    Bulletin of Botanical Research    1995, 15 (2): 246-251.  
    Abstract263)      PDF(pc) (488KB)(193)       Save
    This paper reviews the composition and amounts of plant root exudates, and discusses about the factors affecting root exudation, the sites of exudation, zone of soil influenced by exudates. Finally, large sections are focused on tree root exudation and its influence on soil microorganisms, soil nutritional conditions and the other adjoining plants.
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    DIURNAL CHANGES OF PHOTOSYNTHESIS AND TRANSPIRATION OF MANUALLY PLANTING PUCCINELLIA TENUIFLORA
    Yan Xiu-feng, Sun Guo-rong, Li Jing-lan, Li Jing-xin
    Bulletin of Botanical Research    1995, 15 (2): 252-255.  
    Abstract262)      PDF(pc) (264KB)(218)       Save
    This paper concerns with the studies of the diurnal changes of photosythesis and transpiration of Puccinellia tenuiflora which was planted on Songnen alkalized grassland for one to three years. Diurnal changes of photosynthesis and transpiration of P. tenuiflora growing for one year is different from that growing two and three years. Diurnal changes range of photosynthesis rate and transpiration rate of P.tenuiflora growing one year is larger than that of growing two and three years. and it's water use efficiency is lower than that of growing two and three years.
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    THE RELATIONSHIP BETWEEN THE STRUCTURE AND THE SUNLIGHT UTILIZATION RATIO OF DIFFERENT FORESTRY COMMUNITIES
    Zhao Bac chen, Liu Zi qiang, Wu Shu jie
    Bulletin of Botanical Research    1995, 15 (2): 256-262.  
    Abstract368)      PDF(pc) (391KB)(167)       Save
    Ba on the observed data of the crown structure of artificial Latix olgensis stands and larix olgensis-northeast China ash mixed stands, we established the crown cone model of larix and northeast China ash. By observing the sun radiation in the two forestry communities, from physical basic law of absorbtion, reflection and transmission of electromagnetic wave, we calculate the sunlight utilization ratio of the two forestry communities respectively. and get the result that the sunlight utilization ratio of the double strata mixed stands is larger than that of the one single stratum pure stands.
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    INDUCTION OF VIRUS FREE STRAWBERRY AND RESEARCH ON PHOTOSYNTHESIS OF PLANTS
    Yu Li jie, Cui Ji zhe
    Bulletin of Botanical Research    1995, 15 (2): 263-268.  
    Abstract271)      PDF(pc) (420KB)(256)       Save
    Virus-free strawberries were obtained by runner-tip meristem culture and anther culture, and the frequencey of virus-free plants were 72. 7~95. 5% and 66. 7~79. 2% respectively. Heat-treatment of plantlets from meristem culture at 38℃ increased the frequency of Virus-free plants. Compared with the controls. the virus-free strawberries increased 11. 7~26. 2% in yield, 2. 3~26. 9% in concentration of chorophyll. and 6. 9~12. 1% photosynthesis rate.
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    A GENERAL REVIEW OF THE VEGETATION OF HEILONGJIANG PROVINCE FROM LATE CRETACEOUS TO CENOZOIC
    Tong Xi-da, Yang Xiu-juan, Li Zhen, Kang jie
    Bulletin of Botanical Research    1995, 15 (2): 269-274.  
    Abstract315)      PDF(pc) (525KB)(137)       Save
    Analysis of the development of vegetation since Late Cretaceous in HeilongjiangProvince is based on the palaeobotanic, palaeogeographic and palaeoclimatic data obtained so far. This paper introduced the characteristics of flora in the ages and their evolution during the period.
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    A REVISION OF THE GENUS RANUNCULUS IN CHINA (Ⅱ)
    Wang Wen-tsai
    Bulletin of Botanical Research    1995, 15 (3): 275-329.  
    Abstract295)      PDF(pc) (3713KB)(235)       Save
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    NEW PLANTS FROM NORTH-EAST CHINA
    Fu Pei-yun, Wang Wei, Sun Qi-shi, Li Chi-yun, Fang Chen-fu, Chen You-an, Liu Shu-zhen
    Bulletin of Botanical Research    1995, 15 (3): 330-334.  
    Abstract343)      PDF(pc) (288KB)(177)       Save
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    SOME NEW RECORDS OF BACILLARIOPHYTA IN CHINA
    Yang Ji-gao
    Bulletin of Botanical Research    1995, 15 (3): 335-337.  
    Abstract259)      PDF(pc) (199KB)(158)       Save
    This Paper records 3 species and 3 varieties of Bacillariophyta from Anhui Province.All of these diatoms are new records in China.They are Pinnularia schweinfurthii(A.S.)Pair, Nitzschia sinuata var.delognei, H.Lange-Bertalot, Cymatopleura solea var.apiculata(W.Smith)Rafs, stenopterobia intermedia Lewis, Surirella tenera var. nervosa A.Schmidt, S. pantocsekii Meister.
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