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    15 September 2000, Volume 20 Issue 3
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    A NEW SPECIES OF NEPHROCOCCU
    XIAO Hong-xing, SHENG Yan-min
    2000, 20(3):  242-243. 
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    A NEW VARIETY OF AUDOUINELLA FROM JIANGSU
    HUA Dong, XIE Shu-lian
    2000, 20(3):  244-245. 
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    A new variety, Audouinella chalybea Bory var. xuzhouensis, is described from Xuzhou of Jiangsu, East China. It is distinguished from A. chalybea var. chalybea by its fronds up to 10~20mm in high;chloroplasts irregular laminate, parietal; monosporangia usually at the inner of the fruiting branchlets.
    A NEW SPECIES OF SEDUM FROM ANHUI
    ZHENG Yan, YAO Sheng, ZHANG Ding-cheng
    2000, 20(3):  246-247. 
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    A NEW VARIETY OF ANEMONE RIVULARIS BUCH.-HAM
    DONG Xiao-dong, YANG Lin
    2000, 20(3):  248-248. 
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    A NEWVARIETY OF XANTHIUM L. FROM GANSU CHINA——XANTHIUM SIBIRICUM VAR. JINGYUANENSE
    HOU Hai-gong, LU Yi-tao, SU Yao-hai, XU Pei-yuan
    2000, 20(3):  249-250. 
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    A NEW SPECIES OF TYPHA FROM NORTHEAST OF CHINA
    WU Ming-jiang, ZHAO Hong, XIE Hang, ZHAO Yu-tang
    2000, 20(3):  251-252. 
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    The new species of the genus Typha(Typhaceae), Typha changbaiensis M.J.Wu et Y.T.Zhao, from Changbai Mountains in Jilin province of china is described in this paper.
    NEW FORMA OF CLINOPODIUM MEGALANTHUM FROM YUNNAN
    SU Hong-yan, YANG Xiao-xia
    2000, 20(3):  253-253. 
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    A NEW FORM OF ROSTELLULARIA REICHB
    LIU Jian-lin, LUO Zhi-tie, YANG Hong
    2000, 20(3):  254-254. 
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    Rostellularia procumbens (L.) Nees form. alboflora J. L. Liu, form. nov.
    A NEW CULTIVARIETY OF CEDRUS TREW. FROM HUBEI, CHINA
    FEI Yong-jun
    2000, 20(3):  255-256. 
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    Cedrus deodara (Roxb.) G. Don cv. umbraculiformis Y. J. Fei is a new cultivariety of Cedrus Trew. (Pinaceae), it is discovered in the Jingzhou Ancient City, Hubei, China.
    ON REVISION OF SCIENTIFIC NAME OF SPIRAEA MONGOLICA MAXIM.VAR.TOMENTULOSA (YU) AND SPIRAEA TOMENTULOSA YU HSU
    ZHAO Yi-zhi, WANG Tie-juan
    2000, 20(3):  257-259. 
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    It support that Spiraea mongolica Maxim.var. tomentulosa Yu be promoted to species class and be same species as S. ningshiaensis Yu et Lu. However this species' legal name should be S.tomentulosa (Yu) Y.Z.Zhao. Moreover it finds real S. mongolica Maxim. var. pubscens Y.Z.Zhao et T.J.Wang.
    MOLECULAR CHARACTERIZATION OF TWO ELITE RICE LINES DERIVED FROM A NON-CONVENTIONAL WIDE HYBRID BETWEEN RICE AND ZIZANIA LATIFOLIA
    PIAO Heng-mao, ZHAO Fen-shan, ZHAO Ji-hong, LIU Bao
    2000, 20(3):  260-263. 
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    Two S 18 elite lines that were selected from a novel F1 hybrid plant between rice and a perennial wild grass Zizania latifolia (Griseb.) Turcz. ex Stapf exhibited several desirable traits characteristic of the wild donor species Z. latifolia. However, direct evidence for introgression was lacking. The present study was aimed to characterize these two lines by molecular analysis. Genomic DNA of the two lines and of their rice and Z. latifolia parents were isolated and digested with two restriction enzymes. The blots were then probed with 10 diagnostic, low-copy or moderate-repetitive sequences cloned from genomic DNA of Z. latifolia. It was found that RFLP patterns of the two lines were identical in all the 20 probe/enzyme combinations. In 18 combinations, the two lines were also identical with their rice parental cultivar Matsumae. In two probes, however, the two lines differed distinctively from Matsumae, with hybridization fragment(s) apparently from the wild donor species, Z. latifolia. Meanwhile, loss of the rice parental fragment(s) was also observed with these two probes. Since the two lines were maintained by strict selfing, it was concluded that the changed RFLP patterns of the two lines were the result of Z. latifolia DNA introgression, followed by possible non-homologous recombination and/or sequence modification.
    NOTES ON TWO SPECIES OF PASSIFLORA LINN.FROM CHINA
    LIN Qi
    2000, 20(3):  264-265. 
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    Based on the study of specimens of Passiflora Linn. from Hainan, Guangdong, Guangxi, Yunnan, Guizhou, Sichuan and Hubei, P. altebilobata Hemsl. is regarded as a synonym of P. cupiformis Mast., P. ledongensis S. M. Hwang Q. Huang is regarded as a synonym of P. jianfengensis S. M. Hwang Q. Huang.
    EFFECTS OF ELICITOR AND PRECURSOR ON THE VANILLIN FORMATION IN BATCH SUSPENSION CELL CULTURE OF VANILLA PLANIFOLIA
    CAO Meng-de, LI Jia-ru, WANG Jun-jian
    2000, 20(3):  266-269. 
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    The non-autoclaved Aspergillus niger v.Tiegh elicitor could promote vanillin biosynthesis in suspension cell culture of Vanilla planifolia; Phenylalanine was profitable to cell growth of Vanilla planifolia, but did not affect vanillin formation;ferulic acid could slow down cell growth and increase vanillin accumulation, but its concentration should not be higher than 5m mol/L.
    A STUDY ON VARIATIONS UNDER PERILLA FRUTESCENS (L.) BRITT.IN YUNNAN
    GUO Feng-gen, WANG Shi-yu
    2000, 20(3):  270-274. 
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    A numerical taxonomy of 20 samples of Perilla frutescens (L.) Britt. in Yunnan was studied by choosing 26 characters and using the UPGMA. The result of Cluster Analysis showed that 20 samples of Perilla frutescens (L.) Britt. in Yunnan could be divided into 5 varieties: var. crispa Deane ex Bailey, var. arguta (Benth.) Hand.-Mazz., var. auriculato-dentata C.Y. Wu et Hsuan, var. purpurascens (Hayata) H.W. Li and var. frutescens L.. The establishment of var. frutescens L. and distribution of var. auriculato-dentata were discussed.
    STUDY ON DIVERSITY OF VASCULAR PLANT OF WETLAND IN SHANXI
    SHANGGUAN Tie-liang, ZHANG Feng, ZHANG Long-sheng, SONG Bo-wei
    2000, 20(3):  275-281. 
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    It is first published that there are 686 species of vascular plants of wetland in Shanxi Province, which belong to 308 genera and 83 families. Among them there are about 8 families, 10 genera, 18 species in Pteridophyta. 56 families, 223genera, 504 species in Dicotyledoneae and 19 families, 75 genera, 164 species in Monocotyledoneae. There are various geographical elements among genera, in which the temperate elements take dominant position and make account for 76.9% except cosmopolitan genera. This phenomenon is the result of the broad latitudes and diversified habitats in Shanxi. Cosmopolitan elements has 74 genera. The elements accounts 24% in total genera, and is main components or key genera in wetland vegetation. Endemic of China is scarce in the flora.
    A FLORISTIC ANALYSIS ON SEED PLANTS OF NON-ENDEMIC TO CHINA SPECIES FROM QINHUANGDAO(E.HEBEI)
    ZENG Xian-feng
    2000, 20(3):  282-285. 
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    In Qinhuangdo district, there were 1093 species of wild seed plants, of which, there were 847 species that were non-endemic to China and 246 endemic to China species. The author analysed the non-endemic to China species and the results as follows:There were 36 species of Cosmopolitan distribution type, 55 species of Tropic distribution type(5.2% of the total non-endemic to China species), 510 temperate distribution species(48.2%), 242 E.Asia species(22.9%) and only 2 species of Old-Mediterranea distribution type(0.2%).Based on the folristic analysis Qinhuangdao flora belonged to E.Asia and Temp.Asia flora, and had a little relation to Tropic flora, and Old-Mediterranes flora.
    APPLYING CANONICAL CORRESPONDENCE ANALYSIS TO STUDY NICHE DIFFERENTIATION OF SPECIES OF POLYTRICHACEAE IN CHANGBAI MOUNTAINS
    GUO Shui-liang, CAO Tong
    2000, 20(3):  286-293. 
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    The relationships of 13 species of Polytrichaceae in 30 sites in main ecosystems in Changbai Mountains with environmental factors were studies by canonical correspondence analysis (CCA). The results showed that there are niche differination among the 13 taxa in altitude, soil sand content, water content, acidity and light. The ecological similarities are higher among Polytrichum sphaerothecium, Polytrichastrum alpinum var. brevifolium in altitude, Polytrichastrum ohioense, Polytrichastrum formosum, Polytrichum piliferum, Polytrichum juniperinum in light, Polytrichum commune and Polytrichum juniperinum ssp. strictum in soil water content and acidity.
    THE STUDY OF CULTIVATED KOREAN PINE IN DAXING ANLING, NEIMENGGUL
    LI Dong-liang, WANG Ben-jun, WANG Rui-jie, DING Chang-fu
    2000, 20(3):  294-299. 
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    We Have Cultivated the korean pine (Pinus Koraiensis) in Daxing Anling forest region of Nei Menggul for about 20years. In this paper, we will discuss the problems about natural geographical features, climate and stands of cultivated korean pine, also the tendency of young korean pine growth according to some survived trees from the cultivated in 1970's. The studies showed that the limited factor for cultivated korean pine is the effective water of soil in SE of Daxing Anling forest region of Nei Menggul. The result of research about young korean pine showed that we have made success in cultivated under the moderated climate in somewhere. Furthermore, a suitable scale work is necessary for the next cultivated korean pine. Further attempts that suggested, from this paper, to know well the affective factors how to work such as fixed sites, selected seedings and bring up young trees and thinning methods.
    POLLEN SUBMICROSCOPIC MORPHOLOGY OF ELEUTHEROCOCCUS SENTICOSUS AND E. SESSILIFLORUS (ARALIACEAE)
    LIU Lin-de, ZHANG Ping, SUN Jing-tian, ZHU Ning
    2000, 20(3):  300-303. 
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    The pollen submicroscopic morphology of Eleutherococcus senticosus and E. sessiliflorus was examined with scanning electron microscope (SEM). The pollen grains of the two species are round in equatorial view, 3-labed-rounded in polar view and 3-colporate. The pollen exine ornamentation of E. sessiliflorus and that of male E. senticosus is with reticulate; the exine ornamentation of bisexual E. senticosus pollens is also with reticulate but the murns of some pollens are discontinued. The polar axis×equatorial axis of pollen grains of E. sessiliflorus is 26.5μm×27.4μm; and that of male E. senticosus pollen grains is 21.1μm×22.1μm; that of bisexual E. senticosus pollen grains is about 21.6μm×23.9μm. The characteristics of pollen submicroscopic morphology of the two species supports the traditional taxonomy for the genus and the species level; and the distinguishing features of some bisexual E. senticosus pollens may be related to their irregular development.
    STUDY ON FERTILITY AND MEIOTIC BEHAVIOR OF F1 HYBRIDS BETWEEN ALLOPLASMIC WHEAT LINE, TRITICUM AESTIVUM CV. CHINESE SPRING, AND TRITITRIGIA
    WANG Tong-chang, LIU Wei-hua, SHI Rui, GUO Chang-hong, XU Xiang-ling, LI Ji-lin
    2000, 20(3):  304-312. 
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    Summary Chromosome pairing in the meiotic metaphase I of the pollen mother cells was studied using the F1 hybrids between alloplasmic lines of common wheat, Triticum aestivum var. Chinese Spring (genome constitution AABBDD), as female and octoploid trititrigia (AABBDDEE or AABBDDFF) or hexaploid trititrigia (AABBEE) in order to know the effect of alien cytoplasm on meiotic chromosome behavior. Chromosome pairing in the hybrids of the cross-combinations (genome constitution AABBDDE or AABBDDF, or AABBDE) was ascribed to both the homologous and homoeologous chromosome pairing. The experiment shows that there is a homoeologous relationship between genomic members of common wheat and that of For Egenome. D2 type cytoplasm promotes homoeologous but inhibits homoeologous chromosome pairing. Sv cytoplasm inhibits both homologous and homoeologous pairing. G-cytoplasm promotes homologous pairing. In the hybrids between alloplasmic Chinese Spring and hexaploid trititrigia, there was low seed-set rate and a confused meiosis, this maybe implies difference exists between E two genomes from Elytrigia intermedium and from E. Elongatum. G-, D2-, Mt- and Mu-type cytoplasmic male sterile octoploid trititrigia lines has been selected following backcrosses, and in these lines, the D2-cytoplasmic octoploid trititrigia possess a character of photoperiod sensitive male sterile; A normal fertility of G-cytoplasmic "Yz-3" means exist of G-type fertility restorer gene in the E genome of octoploid trititrigia line, "Yz-3".
    KARYOMORPHOLOGY OF TUSSILAGO L. (ASTERACEAE:SENECIONEAE) AND ITS SYSTEMATIC SIGNIFICANCE
    LIU Jian-quan
    2000, 20(3):  313-317. 
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    Investigated in the present paper was the karyomorphology of Tussilago L. The interphase nuclei were categorized to be the intermediate type between the simple chromocenter type and complex chromocenter type, and the mitotic prophase chromosomes were classified as the intermediate type between the proximal type and interstitial type. The metaphase chromosomes were rather small, ranging from 2.67μm to 1.05μm and the average length was 1.37μm. The karyotype was formulated as 2n=60=40m+8sm+10st+2t with distinct bimodality. The karyomorphological characteristics of Tussilago are disctinct from those of other genera reported in the Senecioneae and seem to be correlated to its unique gross morphology.
    ANATOMICAL CHARACTERISTICS AND PHYLOGENETIC RELATIONSHIPS OF SECONDARY XYLEM OF MAGNOLIACEAE IN CHINA
    ZHANG Xiu-jun, CHEN Yu-qin, CHAI Feng-rui, WU Shu-ming
    2000, 20(3):  318-323. 
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    The anatomical characteristics and phylogenetic relationships of secondary xylem of Magnoliaceae in China are described, including vessels、fibre-trachieds and rays. The ten genera may be divided into two subfamilies. The first subfamily is Magnoliodeae, including Magnolieae(tribe), which has Maglietia Bl., Manglietiastrum Law, Magnolia L., Parakmeria Hu et Cheng, Kmeria (Pierre) Dandy, Alcimandra Dandy six genera and Michelieae Law(tribe), which has Michelia L., Paramichelia Hu, Tsoongiodendron Chun three genera. The second subfamily is Liriodendroideae (Bark) Law, which only includes Liriodendron L. We analyzed the phylogenetic relationships by means of the differences of secondary xylem between the genera. The phylogenetic relationships of Magnoliaceae may be described as follows:[Magnolieae (Maglietia Bl., Manglietiastrum Law, Parakmeria Hu et Cheng, Kmeria (Pierre) Dandy→Magnolia L., Alcimandra Dandy)→Michelieae Law]→Liriodendroideae (Bark) Law.
    EFFECTION OF WATER STRESS ON ULTRASTRUCTURE IN LEAVES OF KOREAN PINE SEEDLING
    LI Jing, MA Shu-rong, YAN Xiu-feng, ZU Yuan-gang
    2000, 20(3):  324-327. 
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    The changes of ultrastructure in leaves of Korean pine (Pinus koraiensis Sieb. et. Zucc) are different under soil drought stress and PEG drought stress. Under soil drought stress lamella structure of chloroplast wrenched obviously and there was a black area, which had high electron density in the middle of chloroplast. Under PEG drought stress chloroplasts were swollen but no black area. Under soil drought stress the membrane of mitochondria remained clear and intact. mitochondrial matrix became much more darker and thicker. While under PEG drought stress the quantity of mitochondrion increased but the numbers of mitochondria decreased and mitochondrial matrix became thinner. It can be seen that under the two methods of drought stress the mechanism of damage and its physiological meaning maybe different too.
    SOY SAPONINS AND IT'S UNTICARCINOGENIC EFFECT
    SUN Xue-bin
    2000, 20(3):  328-331. 
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    Scientists have payed more attention on soy saponins in these years. Statistics on soy saponins studying in and out our country including the sources, distribution and structures etc had been concluded in this article. Soy saponins and it's unticarcinogenic effects were discussed in two aspects: immunity modulation and untimutation. Then we suggest that soy saponins had powerful potent being developed into a new unticarcinogenic drug.
    THE STUDY OF CLASSIFICATION AND SUCCESSION OF ALNIPHYLLUM FORTUNEI FOREST IN GUANGXI
    WANG Xian-pu, LI Jun-qing
    2000, 20(3):  332-350. 
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    Alniphyllum fortunei forest is a seral stage of evergreen broadlleaf forest sere, mainly occurs in red and yellow soil mountain of eastern central subtropics below 130.0m at elevation.It belongs to a community type of subtcopical deciduous broadleaf forest.3 Plant Association Classes and 13 Plant Associations are described as follows: I Young growth of Ahniphyllum fortunei with single tree layer 1.Alniphyllum fortunei-Eurya nitida -Miscanthus floridulus Association, 2.Alniphyllum fortunei-Itea chinensis-Woodwardia japonica Association, Ⅱ Middle age forest of Alniphyllum fortunei with two tree layers 3.Alniphyllum fortunei-Eurya loquiana-Maesa japonica-Woodwardia japonica Association, 4.Alniphyllum fortunei+Liquidambar formosana-Eurya impressinervis-Masea japonica-Woodwardia japonica Association, 5.Alniphyllum fortunei+carpinus fargesii-castanopsis carlesii-Masea japonica-Woodwardia japonica Association, Ⅲ Mature forest of Alniphyllum fortunei with three tree layers 6. Alniphyllum fortunei+Betula luminifera-Clethra kaipoensis -Blastus cochinchinensis-Woodwardia japonica Association, 7.Alniphyllum fortunei-Cinnamomum parthenoxylon-Ilex asprella-Woodwardia japonica Association, 8.Aliphyllum fortunei+Liquidambar formosana-Pseudosasa amabilis-Ilex asprella-Woodwardia japonica+Blechnum orientale Association, 9.Alniphyllum fortunei-Itea chinensis-Lasianthus, acuminatissima-woodwardia japonica Association 10.Alniphyllum fortunei-Eurya impressinervis-Blastus cochinchinensis-Woodwardia japonica Association, 11.Alniphyllum fortunei-Daphniphyllum glaucescens-Hydrangea paniculata-phyllagathis cavaleriei Association, 12.Alniphyllum fortunei-Schima argentea-Lasianthus glaberrima-Woodwardia japonica Association, 13.Alniphyllum fortunei+Schima argentea-Eurya impressinervis-Maesa japonica-Woodwardia japonica Association. Its successional trend toward recovering evergreen broadleaf forest can be fully proved through information analysis of community physiognomy, structure and species composition change between 13 Associations.
    THE FRACTAL CHARACTER OF THE DISTRIBUTION PATTERN OF DEYEUXIA ANGUSTIFOLIA POPULATION Ⅱ. Information Dimension and Correlation Dimension
    NI Hong-wei, GUO Ya-sheng, WU Hai-yi
    2000, 20(3):  351-354. 
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    The distribution pattern of D. angustifolia in the Sanjiang plain has been described by using the information dimension and Correlation dimension of fractal theory. The result reveals that: the information dimension respectively was 1.494、1.709、1.642、1.553 and 1.625. Complex spatial distribution has been described. The correlation dimension respectively was 1.662、1.861、1.766、1.750 and 1.807 from May to September. There was high degree of individual spatial relatedness, sharp intraspecific competition and powerfully occupy space. Seasonal dynamic of two dimensions reached their maximum values beginning May to June then fell down. They were gone up again in September.
    A STUDY ON THE NUMERICAL CLASSIFICATION OF WETLAND VEGETATIONS IN LULIANG PREFECTURE, SHANXI
    ZHANG Feng, SHANGGUAN Tie-liang
    2000, 20(3):  355-360. 
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    Luliang Prefecture, situated in 36°30'~38°30' N, 110°10'~110°20'E, is located in the eastern of loess plateau and western Shanxi, North China. The wetland vegetations in Luliang Prefecture are concentrately distributed in the basins of Sanchuan River, Qiushui River and Wenyu River, and in Wucheng Reservoir and Wenyuhe Reservoir and around the reservoirs. The wetland vegrtations were divided into 11 formations by TWINSPAN, which were as follows: Form. Phragmites communis, Equisetum ramosissimum, Form. Polygonum hydropiper, Form. Chloris virgata, Form. Calamagrostis pseudophragmites, Form. Artemisia scoparia, Form. Medicago falcata, Form. Carex sp., Medicago falcata, Form. Aneurolepidium dasystachys, Form. Carex spp., Form. Artemisia scoparia, Artemisia annua, Form. Chloris virgata, Artemisia integrifolia. Moreover, the dynamics of the wetland vegetation and the relationship between the vegetation and moisture in soil were discussed, respectively, Finally, the strategies for protecting, utilizing, developing the vegetation are presented in this paper.