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    15 June 2001, Volume 21 Issue 2
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    Taxonomy of the Genus Illicium Linn
    LIN Qi
    2001, 21(2):  161-174. 
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    A taxonomic revision of the genus Illicium is presented based mainly of herbarium studies involving more than 10 thousand speciemens from 121herbaria worldwide, along with field observations and morphological studies. Variation in morphological character of flower buds and tepals is used as the basis of an amended supraspecific classification, with 2 sections, viz.:Illicium sect. Illicium, consisting of 9 species and 1 subspecies and characterized by flower buds ovoid, and tepals oblong, elliptic, lanceolate to narrowly ligulate, and flat;and Illicium sect. Cymbostemon, consisting of 25 species, 2 subspecies and 1 variety with flower buds sphaeroid, and tepals broadly ovate to orbicular, and concave. Illicium sect. Impressicosta Law & Q. Lin is regarded as a new synonym of Illicium sect. Illicium, Illicium subgen. Cymbostemon (Spach) Law & Q. Lin is regarded as a new synonym of Illicium sect. Cymbostemon (Spach) A. C. Smith, and lectotypes of Illicium henryi Diels and I. cambodianum Hance are designated. Taxonomic character, a key to the taxa, geographical distribution, specimens examined, and classification notes are provided for each taxon in this paper.
    Neo-Taraxacum Y. R. Ling & X. D. Sun, Genus novum et Addenda Subfamiliae Liguliflorae, Familiae Compositarum
    LING Yeou ruenn, SUN Xiu dian
    2001, 21(2):  175-176. 
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    NEW TAXA OF FAGACEAE IN SHAANXI PROVINCE
    ZHANG Wen hiu, KANG Yong xiang, LU Zhi jun
    2001, 21(2):  177-181. 
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    To gain a clear idea of classification and distribution of Fagaceae in Shaanxi province, a lot of field investigations and indoor studies on the specimens have been accomplished.Some new taxa were reported including three new varieties, Quercus aliena Bl. var. taibaiensis W. H. Zhang, Quercus aliena Bl. var. shaanxiensis W. H. Zhang, Quercus glandulifera Bl. var. stellatopilosa W. H. Zhang;two new combinations, Cyclobalanopsis fargesii (Franch.)W. H. Zhang, Cyclobalanopsis hypargyrae (Seem.)W. H. Zhang and three new distribution records in Shaanxi province, Lithocarpus polystachyus Rehd. Quercus griffithii Hook f. et Thoms, Quercus monnula Y. C. Hsu et H. W. Jen.And the name confusion of Q.glanduliferaBl.was clarified.
    A Revision of Some Species of the Genus Phyllostachys (Bambusoideae)(Ⅱ)
    LAI Guang Hui
    2001, 21(2):  182-185. 
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    As the second part of commenting on some species of the genus Phyllostachys Sieb. et Zucc., eight taxa are dealt with in this paper. Ph.heteroclada Oliver var. funhuaensis Wang et Lu is raised to an independent species, i.e. Ph. funhuaensis (Wang et Lu) Ma et Lai because of its characters which are distinctly different from Ph. heteroclada Oliver. On basis of the field investigations and the examinations of the specimens and literature, the distribution of Ph. angusta McClure and Ph.varioauriculata Li et Wu var. glabrata Lai is revised, and four Latin names, Ph. nidularia Munro f. solida Yang (=Ph.nidularia Munro f. farcta Zhao et Liu), Ph. nigra (Lodd. ex Lindl.) Munro var. stauntonii (Munro)Yang et al. (=Ph. nigra (Lodd.ex Lindl.) Munro var. henonis (Mitf.) Stapf ex Rendle), Ph. sanmingensis Huang et Zheng(=Ph. edulis (Carr.) H.de Lehaie) and Ph. stimulosa Zhao et Liu f. unifoliata Wen (=Ph. nidularia Munro f. glabrovagina Wen) are reduced to synonyms. In addition, Ph. compressa H.Uyeki should be excluded from this genus by its first description.
    A NEW VARIETY OF ALLIUM FROM XINJIANG
    YANG Chang you, HUANG Jun hua
    2001, 21(2):  186-186. 
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    Allium mongolicum Rgl.var.Kabaense C.Y.Yang et.J.H.Huang
    STUDY ON TWO NEW RECORDS OF GIGARTINACEAE FROM CHINA
    SU Qiao, LUAN Ri xiao, YANG Jun, AN Li jia, ZU Yuan gang
    2001, 21(2):  187-190. 
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    Two species of Gigartinaceae, Chondrus ocellatus and Mazzaella japonica are reported;both are new to China.
    NOTES ON FUNGI IN TIBET OF CHINA
    TOLGOR, LI yu
    2001, 21(2):  191-194. 
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    In this paper, 34 new records fungi from Yadong and Linzhi of Tibet are reported, including 22 species Basidiomycetes, 7 species Ascomycetes and 5 species Myxomycetes. All specimens examined are deposited in HJAU.
    Origin and Taxonomic Position of Chinese Toon [Toona sinesis (A. Juss.) Roem.]
    LU Chang xun, ZHANG De chun, WANG De bin
    2001, 21(2):  195-199. 
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    The origin of Chinese toon has studied in accordence with phytogeography and the theory of angiosperm origin.According to the authors' investigation, the source of Chinese toon originates from the region of northeastern India and Burma.By reviewing the evolutional history of the taxonomic position of Chinese toon, the tooon no doubt belongs to Toona Roem of Meliaceae.According to toon allozyme analysis it has been proved that three exist variations in toon speceies, however the variations of toon remain to be discovery.Research and naming.
    SPORE MORPHOLOGY OF CERATOPTERIS BRONGN. AND TAXONOMIC STATUE
    LI Xin Guo, DAI Xi Ling, WANG Quan Xi
    2001, 21(2):  200-201. 
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    Spore morphology of 2 species of genus Ceratopteris from China was examined by SEM and TEM. Each spore was described detailed. The taxonomic status of Ceratopteris was discussed. The spore morphology of the genus is uniform, trilete, cosate, radiosymmetric. Exospore swells to form contour of the spore ornamentation. Perispore thin, consist of rodlets or grana in high magnification. At the point of spore morphology, it is right that Ceratopteris has been placed monotypic family Parkeriaceae. It is the close relation with Mohria. Its status maybe is between Lygodiaceae and Hemionitidaceae.
    A study on the leaf comparative anatomy of Dryopteridaceae in Northeast of China
    WANG Xiu hua
    2001, 21(2):  202-205. 
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    Anatomical characters of 6 species of genera Dryopteris, 3 species of genera polystichum, distributing in northeast of China, was examined in the light microscope.The result reveals that:Some leaf anatomical characters of family Dryopteridaceae were steady.These can be taken as the characters for identification of species and genera.
    CALLUS INDUCTION AND PLANT REGENERATION FROM LEAVES AND PETIOLE IN E.ULMOIDES
    ZHU Deng yun, TIAN Hui qin, LI Jun ming
    2001, 21(2):  206-209. 
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    In order to establish somaclones of E. ulmoides, we used as explants leaves and petioles of 5~6 year old E. ulmoides and studied the method of callus induction and plant regeneration. Explants taken from leaves and petioles were cultured on MS medium supplemented with 2.0~4.0 mg/L NAA or 1.0 mg/L BA+2.0~4.0 mg/L NAA. After 21~28 days of culture both leaves and petioles dedifferentiated, forming green or greenish compact callus, with induction frequency surpassing 70%. Transferred onto MS medium supplemented with 2.25~2.75 mg/L BA+0.15 mg/L NAA and cultured for 1~2 passages, the callus redifferentiated at a frequency of over 15%. The optimal condition for redifferentiation needs further study because many shoots went abnormal. To induce rooting, healthy shoots were selected. The callus at the based end of the shoot was cut off, and the cut end was soaked in a sterile ABT rooting powder solution (250 mg/L) for 3~5 sec. Subsequently the treated shoot was transplanted into 1/4 strength, hormone free MS medium. After 2~3 weeks, 1~5 sturdy white root(s) appeared from the lower end of the shoot. Approximately 60%~80% of the shoots rooted.
    STUDIES ON SOMATIC EMBRYOS INDUCTION IN SOYBEAN(GLYCINE MAX.L)
    QU Gui qin, ZHANG Xian ze, HUO Jun wei
    2001, 21(2):  210-214. 
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    Somatic embryo induction was the key in soybean regeneration. Genetype, inducing photoperiod, explant pod site in and sucrose concentration were the main factors in the somatic embryo induction, which lead to the different embryogenesis efficiency and the number of normal embryos. Cultivars Hefeng25 and Dongnong7819 were desiable genotype.2-4mm long immature cotyledons from the lower part of plant at the early stage of growth and develpment were more efficent for embryogenesis. The embryogenesis frequncy under four photoperiod were similar, but the frequncy of normal embryos was higher under continuous dim light. NAA was superior to 2, 4-D in embryogenesis;combination of 10mg/lNAA and 1.5% sucrose was better.
    STUDY ON KARYOTYPES OF ARTEMISIA SECT.ARTEMISIA Y.R.LING. IN NORTHEAST CHINA
    WANG Chen, LU Fang, GUAN Yang, ZHANG Gui yi
    2001, 21(2):  215-221. 
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    The chromosome numbers of twelve species and karyotypes of everyone of Artemisia in northeast China are reported.These included first counts for five species.The karyotype formulated are as follows:A.stolonifera 2n=4x=36=28m+4sm(4SAT)+4st(4SAT);A.lavandulaefolia 2n=2x=50=40m+4sm+6st(6SAT);A.lancea Van. 2n=2x=16=10m+4sm+2st;A.mongolica (Fisch.ex Bess.)Nakai 2n=2x=16=14m+2st;A.rubripes Nakai.2n=2x=16=14m+2st;A.igniaria Maixm. 2n=2x=34=28m+2sm+4st(4SAT);A.integrifolia Linn. 2n=4x=36=20m+12sm+4st;A.subulata Nakai.2n=2x=16=14m+2st;A.brachyphylla Kitam.2n=2x=18=14m+2sm+2st;A.viridissima (Komar.)Pamp. 2n=2x=18=14m+4sm;A.keiskeana Miq.2n=2x=18=16m+2sm;A.sylvatica Maxim.2n=2x=16=14m+2sm, karyotypes of these species are symmetric and belong to 2B except A.lavandulaefolia. According to the information of karyotypes, classification and evolution of the several species were investigated.
    Alien Cytoplasmic Effects on Trait Production and Chromosome Behaviors at Meiosis in Crossing Alloplasmic Wheat with Rye or Triticale
    LIU Wei hua, WANG Tong chang, HE Cong fen, XU Xiang ling, LI Ji lin
    2001, 21(2):  222-226. 
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    types of alien cytoplasm were used to study on the allopasmic effects on chromosome behaviors at meiosis in hybrids between alloplasmic Triticum aestivum with rey and triticale.It was observed that(a) D2-type cytoplasm from Ae.crassa(4x)appears to inhinit the pairing of homologues and to promote the homoeologue pairing;(b)S-type cytoplasm from Ae.sharonesis shows the effects of promoting homologous chromosome pairing;(c)G-type cytoplasm from T.timopheevi and T.zhukovskyi possesses the ability to produce functional female gametes;(d)sv-type cytoplasm from Ae.kotshyi inhibits pairing of both homologues and homoeologue.Male sterile octoploid triticale lines with G, SV, and D2-type cytoplasm have been synthesized and the male sterility induced by D2-type cytoplasm is a photosensitive which was found to be express under daylight more than 15 hors.
    STUDIES ON THE SPORE MORPHOLOGY OF ONYCHIUM FROM CHINA
    YU Jing, WANG Quan xi, BAO Wen mei
    2001, 21(2):  227-230. 
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    Spore morphology of 8 species 2 varieties of genus Onychium from China was examined by SEM. Each spore was described detailed. The taxonomic status of Onychium was discussed. The spore morphology of the genus is uniform, trilete, radiosymmetric, polar view obtuse triangular or tri-rounded, equatorial view elliptical, super semiorbicular or fan-shaped. Perispore thin, exospore swells to form contour of spore ornamentation. The spore has a few unique structures such as equatorial flange, proximal ridge and distal ridge. Difference between species mainly appears as different distal surface ornamentation. At the point of spore morphology, Onychium is far distinguished from other genera in Sinopteridaceae. However, it is similar to genus Pteris of family Pteridaceae. We suggest separate Onychium from Sinopteridaceae to Pteridaceae.
    A BIOGEOGRAPHIC COMPARISON ON ATHYRIUM ROTH IN TAIWAN AND MAINLAND OF CHINA
    WANG Zhong ren
    2001, 21(2):  231-238. 
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    Athyrium Roth is a typical Eastern Asiatic genus. There are about 160 species in the world. However, except a few species, most of them occur in the subtropical mountains of eastern Asia, and small part of them occurs in the temperature area of E. Asia. China is the distribution center of the genus with 117 species. The species of Athyrium in Taiwan are particularly close to the species in mainland. Therefore, it is a representative example for revealing the phytogeographical relationship between the two banks of the strait. There are 32 species of Athyrium sensu lato in Taiwan, including 27 species of Athyrium sensu strict, 2 species of Dryoathyrium, 1 species of Lunathyrium, 1 species of Athyriopsis and 1 species of Pseudocystopteris. If ignoring 4 species of Athyrium sensu strict with doubt, there are 28 species in Taiwan at least. Among them, 21 species are in common with mainland, the common percentage is 75%. Moreover, although the other 7 species have not been found in mainland, they are very similar to some species in mainland morphologically. Whether there are the same species, subspecies or sibling species or not? Which is still waiting for the further studies. Among the 16 common species of Athyrium sensu strict between Taiwan and mainland, 7 species are disjunct distribution between Taiwan and Southwest China. Which not only shows Athyrium species in Taiwan have close relationship with mainland species may be with common origin, but also shows the flora of the highland of Taiwan has most close relationship with the flora of the highland in the Southwest mainland. Further investigating and examining of genetic relationship (such as genetic identity) of the common or related species of two banks of the strait with biosystematic or molecular systematic methods, and further understanding and quantitative studies on the historical and geographical relationships between the florae of Taiwan and mainland are necessary.
    STUDIED ON AULONORAPHIDINALES FROM WUDALIAN-CHI LAKE Studied on Aulonoraphidinales From WuDaLian-chi Lake
    FAN Ya wen, BAO Wen mei, WANG Quan xi
    2001, 21(2):  239-244. 
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    In the present paper, 4 families, 6 genera, 38 species, 10 varieties and 1 forms of Aulonoraphidinales from WuDaLian-chi Lake in Hei Long Jiang province are first reported. The morphological characters of each species are described and discussed.
    STUDY ON FLORISTIC ECOLOGICAL AND GEOGRAPHICAL DISTRIBUTIONOF SPIRAEA GENUS IN THE MONGOLIAN PLATEAU
    WANG Tie juan, ZHAO Yi zhi
    2001, 21(2):  245-251. 
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    The distribution range map of every species of Spiraea in the Mongolian Plateau has been drawn according to the specimens and related literatures. On the basis, the floristic geographical element of every species is defined and the law of ecological geographical distribution of Spiraea is researched.
    The Relationship between the Age and Salidroside Content in the root of Rhodiola sachalinensis
    WU Shuang xiu, SHANG Xin hai, DAI Shao jun, YAN Xiu feng
    2001, 21(2):  252-257. 
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    The study was carried on the relationship between the age and salidroside content in the root of Rhodiola sachalinensis, which were collected from 14 populations in field in the Nature Preservation of Chang Bai Mountain, Jilin Province in August 1998 and July 1999 and from a nursery garden of Da Xing An Ling Area, Heilongjiang Province in 1999, separately. The age was judged according to the numbers of bud scale scar on the rhizome of Rh. sachalinensis. The age and salidroside content in the root of Rh. sachalinensis cultivated in the nursery garden has the closely positive correlation, but has the less positive correlation in field in Chang Bai Mountain.
    THE ACTIVITIES OF POLYPHENOL OXIDASE, PEROXIDASE AND PEROXIDASE ISOZYMOGRAM IN THE LEAVES OF MANGROVE PLANT GROWING NEAR DAYA BAY
    CHENG Ge, CHENG Hui zhen, WANG Hou lin, MIAO Shen yu
    2001, 21(2):  258-261. 
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    This article was to study the activities of polyphenol oxidase、peroxidase and peroxidase isozymogram in the leaves of Avicennoa marina and Kandelia candel growing at Aotou, Renshan and Shanmen island nearby Daya Bay. It was found that the activities of polyphenol oxidase in the leaves for these two mangrove plants at Aotou, Renshen, Shanmen island decreased one by one, but the activities of peroxidase increased. The height and number of peak for peroxidase isozymogram were different from each other but had no regulation at these three regions.
    STUDIES ON THE MINERAL ELEMENTS DISTRIBUTION OF PAEONIA SUFFRUTICOSA VAR. SPONTANEA IN JISHAN, SHANXI, CHINA
    SHANG Guan Tie liang, ZHANG Hong, XI Yu ying, DAN Yang
    2001, 21(2):  262-265. 
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    kinds of mineral elements(Cd, Cr, Mn, Ni, Pb, Cu, Fe, Zn, K and Mg) of Paeonia suffruticosa var. spontanea in Jishan, shanxi province were determinated by atomic absorption spectroscopy, the distribution characteristics and the accumulation index were also investigated in this paper. The results shows that there is evident difference of the mineral elements in different organs. The contents of K, Mg, Mn, Ni, Cd, Cr, Pb are higher in leaves and Fe, Zn, Cu are higher in root, stem and petiole. Majority mineral elements are minimum. On analyzing the concentration factor of all the elements, the concentration factor of K, Mg, Mn, Fe, Zn are higher in Paeonia suffruticosa var. spontanea, the concentration factor of leaf were higher than other organs. the correlation among Zn, Cd, Cr, Pb, Mn, Fe, Ni and Cu were statistically significant. In addition, relationship between all the elements were studied by means of correlation analysis. The results are as follows:There are significant correlation among Zn, Cd, Cr, Pb, Mn, Fe, Cu and Ni, and the correlation were statistically significant between K and Mg. Moreover, There existed a significant correlation between the elements in soil and plant.
    MORPHOLOGICAL AND MOLECULAR ANALYSIS OF SOMACLONA VARIATION IN TRANSGENIC PLANTS
    ZHENG Yi zhi, Sala F
    2001, 21(2):  266-271. 
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    Morphological and genomic DNA diversities of somaclonal variation in transgenic poplar, rice and sugarcane were analyzed in the present paper. The following questions were discussed:1)morphological changes of somaclonal variations of the transgenic plants, 2)genomic DNA changes, 3)the correlation between morphological and DNA changes, 4)inheritability of the morphological and DNA alteration, 5)causes of somaclonal variation in transgenic plants, and 6) utilities of transgenic plants bearing somaclonal variation in agricultural practice.
    GENETIC DIFFERENTIATION IN LEYMUS CHINENSIS POPULATIONS REVEALED BY RAPD MARKERS I:VARIATION ON THE FREQUENCIES OF AMPLIFIED FRAGMENTS
    CUI Ji zhe, ZU yuan gang, GUAN Xiao duo
    2001, 21(2):  272-277. 
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    Leymus chinensis is a rhizome grass species, which has 2 leaf-colored types, a grayish green and a yellowish green, in the Songnen Plain of China. To reveal the molecular bases of genetic differentiation between the 2 types, RAPD was conducted on 105 individuals from 9 populations by using 15 primers. RAPD produced 155 amplified fragments, and total percentage of polymorphic loci is 96.1. 10.1% polymorphic loci were different between the 2 types. There were similarities of certain polymorphic loci among the populations sampled in the similar habitat. There were characterized polymorphic loci for 9 populations respectively.
    STUDY ON THE COMMUNITIES OF ZOYSIA MACROSTACHYA AND ZOYSIA SINICA AS WELL AS VARIATIONS UNDER GENUS OF ZOYSIA SINICA
    WANG Yan, ZHANG Mian, ZHANG Xue yong, DOGN Hou de
    2001, 21(2):  278-284. 
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    Zoysia macrostachya is a kind of salt-living plant. It mainly grows on salt soil along sea bank. Most species in its section system are salt living. Its communities belong to original beach community. Zoysia sinca and Zoysia macrostachya are suitable lawn grasses for cities along seas. Zoysia sinica is a kind of lawn grass with salt tolerance character. Its communities mainly distribute at 2~40 meters height along seas. Its ecological breadth is wide. The pH values of soil where it grows are between 7.2~7.9. Zoysia sinica communities are single dominant and its cover degrees are between 60~90 percent. There is abundance variation in Zoysia sinica. 17 samples are divided into 6 types by Fuzzy method and the differentiation among the types are great. PCA analysis shows that sexing reproduce organ such as the height of spike, and nourishment organs such as the length of leaf and the increasing speed of stolen are important indexes for studying the variations under the genus of Zoysia sinica.
    Growth Comparison on the Larix olgensis of Different Provenance
    LI Jing wen, SHI Fu chen, LU Zhao hua
    2001, 21(2):  285-289. 
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    The growth characteristics and pattern were studied in a 8-year dominant larch population in Toudao Forestry Farm, Caihe Forestry Bureau. The growth of the dominant population is higher than the normal one;It's growth pattern revealed the characteristics of more peaks, longer lasting time of the peaks and higher growth than the normal one. To sum up the research results, we conclude that the fasting growth reason are relative to the Proveance.
    ECOLOGICAL CHARACTERISTICS AND THE WOOD PROPERTIES OF THE RARE SPECIES USED FOR FURNITURE IN CHINA
    YU Shen, MAO Zi jun
    2001, 21(2):  290-292. 
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    This paper studied and showed the distribution, ecological characteristics, wood gross structure, processing technological properties of the wood and the utilization and conservation of rare species used for furniture in China. Study showed that there are not more than 10 species used for high-grade furniture in China. These species distribute in the regions of tropic and sub-tropic of China. The resources of these species are reducing sharply now. Two of these species (Chukrasia tabularis A. Juss. and Dalbergia odorifera T. Chen) are very rare and the diameter class of the forest is reducing. So the protection and plantation of these species is becoming more important and urgent.
    FRACTAL ANALYSIS ON SPATIAL PATTERN DYNAMICS OF EXISTING THEROPENCEDRYMION AFTER DYNAMICS MANAGEMENT
    LI Jing wen, ZU Yuan gang, SHI Fu chen
    2001, 21(2):  293-298. 
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    The article discussed the spatial pattern dynamics of tree species of secondary theropencedrymion managed in means of "Reserving Mother Tree Group"(RMTG) in different time, by using the way of "Time Instead of Space" and fractal theory. The result indicated that the space holding capacity of tree layer was enhanced and tended to be stable gradually as time went on, and the closure of multiple tree layer has been formed, moreover Pinus koraiensis, Tilia spp and Fraxinus mandshurica hold the dominance. On the contrary, the space holding capacity of shrub layer was decreased and tended to be stable quickly, and the thriving of the photophilus shrubs was disappeared;the typical theropencedrymion shrub species such as Syringa amurensis, Philadelphus schrenkii and Acanthopanax senticosus covered the dominance. All these manifested the RMTG management has accelerated the succession of stands to typical theropencedrymion.
    BIOMASS AND ENERGY ALLOCATION IN LEYMUS CHINENSIS POPULATION
    WANG Ren zhong, ZU Yuan gang
    2001, 21(2):  299-303. 
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    The biomass and energy allocation among the rhizome, vegetative shoot, reproductive shoot and population modulus of Leymus chinensis were studied by using modulus analysis. The results show that there was not trade-off between vegetative shoot biomass/energy and reproductive shoot bimass/energy, but there was trade-off between rhizome biomass/energy and vegetative shoot biomass/energy. The results also show that there was not significant different between the rate of biomass allocation and the rate of energy allocation, and the two rates similar enough that one could be substituted for the other.
    STUDY ON THE GROWTH DYNAMICS OF ABOVEGROUND BIOMASS AND REPRODUCTIVE EFFECTS OF POPULATION OF SECALE CARELE L.BY MOVWING
    DUO Li an, ZHAO Shu lan
    2001, 21(2):  304-307. 
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    It dealt with dynamics of grassland aboveground biomass and reproductive effects of population of Secale carele L. of the first and the second crop by mowing a time before summer. The results showed that Secale carele L. can be croped two crops in growth date from turngreen to early summer (June 7).The highest total aboveground biomass was 1004.20 g/m2. There was an indication that the herb had high efficiency of photosynthesis. Through contrast of productive characteristic of the first and second crop, there were results that the second crop was 57.11% in the highest total aboveground biomass and growth date of the crop was 42.06% in total growth date. To the first crop the ratio of fresh herb and dry herb was relatively high and the ratio of stem to leaf was relatively low. The results showed clearly that the first crop was more suited for fresh fodder or green drink and food, and the second crop was more suited for dry fodder or natural fiber food. Through comparative study of AGR and RGR, it was further testified that later management of the first crop had an important effect on formation of total aboveground biomass. The study provided a scientific basis for applying ecological engineering of efficient agriculture to developing productive characteristic of Secale carele L. to a maximum.
    STRUCTURE ANALYSIS OF THE ENERGY SYSTEM OF ECOLOGICAL TWO POPULATION SYSTEM
    ZHANG Jie, XU Hui, HUANG Xi, LI Tie Nan
    2001, 21(2):  308-312. 
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    Correspending to each life system, there should be a specialized energy system, which manages the distribution, transportation, configuration and connection of energy in the life system. All such functions are realized by the energy structure of the energy system, which is the important feature of different life systems. In this paper, ecological two population system, as and analysis method of an energy system structure in its transportation, configuration of energy and cybernetic characteristics.
    STUDIES ON PROTEIN CHANGES OF POLLEN MONTHER CELLS DURING MEIOSIS BY MICRO-ISOLATION AND ULTRASENSITIVE SILVER STAIN TECHNIQUES IN LILIUM DAVILL DUCH
    PENG Yong kang, YU Ling, HUO Xin, YU Jian chun, ZHANG Zi li
    2001, 21(2):  313-316. 
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    In this paper, the comparative analysis of protein composition and change in pollen monther cells have been studied during meiosis I cycle by using "Micro-Isolation"、"Micro-Protein SDS-PAGE"and "Ultrasensitive Silver Stain" techniques. The results indicated that more than 25 protein bands could be detected in 100 meiotic cells which were isolated by micromanipulation. Protein composition has not change at prophase I and metaphase I. But 8 bands which have molecular weight 28KD、27KD、26KD、26KD、24KD、23KD、22KD、16KD、, respectively, were disappeared and 185KD protein band was appeared at anaphase I and telophase I. Experiment techniques were set up in this study are very useful for studying protein changes during meiosis and experiment results were obtained in this study are also very valuable for studying biochemical mechanism of meiotic cycle and cycle regulation in higher plants.
    A PRELIMINARY STUDY ON CONSERVATION OF ENDANGERED SPECIES VATICA GUANGXIENSIS
    HUANG Shi xun, WANG Cai ming, WAMG Yan
    2001, 21(2):  317-320. 
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    In guangxi, Vatica guangxiensis whose reproductive capacity is low, have been found only three big trees and has fallen into endangered condition. The paper deal with ecological characteristics and seed biological features of Vatica guangxiensis through investigation, introduction and propagation test, and disscus its adaptability in ex-situ conservation condition and population dynamics.