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    15 December 1994, Volume 14 Issue 4
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    THE CLASSIFICATION AND DISTRIBUTION OF GYPSOPHILA (CARYOPHYLLACEAE) IN CHINA
    Lu De-quan
    1994, 14(4):  329-337. 
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    In this paper, 18 species (two new) and one variety of Gypsophila are reported from China. They are divided into 5 sections. They are mostly distributed in Northwest, North and Northeast of in China, and Xinjiang is the centre of distribution and differentiation in China, with the number of species gradually decreasing eastwards. G. tschiliensis J. Krause, G. huashanensis Y. W. Tsui et D. Q. Lu, G.spinosa D. Q. Lu and G. licentiana Hand. -Mazz. are endemic to China.
    TWO NEW SPECIES OF ROEGNERIA C. KOCH FROM QINGHAI
    Cai Lian-bing
    1994, 14(4):  338-342. 
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    PLANTAE NOVAE EX PROVINCIA HEILONGJIANG
    Zhuo Li-huan, Zhao Lie, Liu Ya-fan
    1994, 14(4):  343-346. 
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    A NEW SPECIES OF CLADRASTIS RAF.
    Li Xiang-wang, Fan Guo-sheng
    1994, 14(4):  347-348. 
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    NEW PLANTS OF CELASTRACEAE FROM GUIZHOU OF CHINA
    Xu Tian-lu, Chen Qian-hai
    1994, 14(4):  349-352. 
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    NOTES ON HUPERZIA BERNH.IN GUIZHOU
    Wang Xiao ying
    1994, 14(4):  353-356. 
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    A NEW VARIETY OF ERIGERON KOMAROVII BOTSCH
    Ye Wan-hui, Sun Bao-liang
    1994, 14(4):  357-358. 
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    NEW TAXA OF GERANIUM FROM CHINA
    Lu Zhao-hua, Zhu You-chang
    1994, 14(4):  359-360. 
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    SOME NEW RECORDED PLANTS OF SPERMATOPHYTA FROM HENAN
    Zhu Chang shan, Yang HaO wei
    1994, 14(4):  361-368. 
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    In this paper, 10 genera, 34 species and 4 varieties are reported as new records in Henan province. The genera new to Henan are Melochia. Centilla. Tongoloa,Ptenopetalum, Notopterygium. Monotropa, Porana, Dysophylla, Comanthosphace and Schizopepon.All the voucher specimens of the present study are preserved in Herbarium of Henan Agricultural University.
    TAXONOMIC STUDIES ON THE FAMILY TAXODIACEAE
    Yu Yong-fu
    1994, 14(4):  369-384. 
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    In the present paper, previous taxonomic systems of Taxodiaceae were reviewed. According to the results of cladistic analysis and phenetic analysis. a new taxonomic system was proposed. Based on external morphological features and evidences from other aspects, the taxonomy of Taxodiaceae was revised. 9genera 12 species and 3 varieties were recognized in the family Taxodiaceae.Cunninghamia lanceolata var. corticosa. Cunninghamia unicanaliculata var. unicanaliculata and var. pyramidalis were treated as synonyms of Cunninghamia lanceolata. The author supports the viewpoints that Cryptomeria fortunei and Cunninghamia konishii should be reduced to varietal rank respectively and Taiwania flousiana should be treated as a synonym of Taiwania cryptomerioides.
    A STUDY ON CLADISTIC TAXONOMY OF ZIZANIA L.(Gramineae)
    Chen Shou-liang, Xu Ke-xue
    1994, 14(4):  385-394. 
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    This paper deals with the cladistic taxonomy of Zizania L. and its related species (Oryza sativa L., Leersia japonica Makino, Chikusichloa aquatica Koidz.etc.) were selected as OTUs. By the results of Kexue compatibility analysis the character 5, 17, 24 and 27 which possess higher incompatible coefficients were deleted from the original data. The OTU13 which loads a higher incompatibility for the character 10 was revised. we finally rearranged the original data for cladistic analysis in Table 3. and by the quantitative method we inferred the evolutionary tree of Zizania being shown in Fig. 1. All quantitative analysis were carried out by KEXUE Quantitative Analysis System on microcomputer.The cladogram (Fig. 1) Was suggested that Pharus L. should be transferred to tribe Phareae. Genus Zizania should belong to tribe Oryzeae and may be considered as an isolated subtribe Zizaniinae. There are 4 species, 2 subspecies in the whole world. i. e. Z. latifolia, Z. texana, Z. aquatica subsp. aquatica, Z. aquatica subsp. brevis, Z. palustris subsp. palustris and Z. Palustris subsp. interior. The evolutionary tread of every species in this genus may be suggested that Z. latifolia is the most primitive species than others, Z. texana and Z. aquatica may be derived from Z. latifolia separately, and then Z. palustris may be derived from Z.aquatica.
    THE PRELIMINARY STUDY ON THE MICROMORPHOLOGICAL FEATURES OF ACHENE SURFACES OF SAUSSUREA
    Huang Yun ping, Yin Zu tang
    1994, 14(4):  395-400. 
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    The micromorphological features of achenes surfaces of 28 species in Saussurea were studied. The result has showed that the achenes of Saussurea edsbit a complex and high micromorphological diversity. The surface features under SEM may be divided into four types:foveolate, reticulate, striate, compound. Based on the comparing of different species. the authors considered that the micromorphologic al features of achenes provide most valuable criteria for classification between sections level, but at species level their significance need more studying.
    AN ANALYSIS OF FLORISTIC INTERRELATIONSHIP OF AQUATIC PLANTS BETWEEN NORTHEAST CHINA AND SOME RELATIONAL REGIONS
    Yu Dan
    1994, 14(4):  401-408. 
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    By means of collecting specimen in fields, examining specimen in herbaria and researching literatures concerned, the floristic interrelationship of aquatic plants between Northeast China and some relational regions was primarily analysed. As Japan was once joined with the continent of Eurasia in ice-age and now the climate close to that of Northeast china, the coefficient of similarity of aquatic plants from these two regions is found to be the highest. During the Pleistocene,most species of aquatic plants were exchanged from Northeast China to the Far East region when Ancient Nen-Lao River linked to Zeja River and some relic species of the Teriary Period were preserved in both the regions. A little tepid species, however, couldn't be distributed from Northeast China to the Far Eastregion, the coefficient of similarity from these two regions is therefore somewhatlower. Indian-Subcontinent. Australia. Southeast Asia and Africa show the Lowest similarity coefficient of aquatic plants for where the climates are obviously different from that of Northeast China. Of all the internal areas compared, the highest coefficient of similarity is shown by the plants from North China because NorthChina and Northeast China are, not only contiguous together but the rivers scattered over the two areas were all belong to the hydrographic net of Ancient Yellow River. On the contrary, aquatic plants from Hainan showed the lowest coefficient for the Island is geographically isolated from Northeast China.
    STUDIES ON THE DEVELOPMENT OF GAMETOPHYTES OF FERNS FROM NORTH EASTERN CHINA Ⅶ.THELYPTERIDACEAE
    Bao Wen mei, Wang Quan xi, Aur Chih wen
    1994, 14(4):  409-415. 
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    According to Ching's system (1963) the Thelypteridaceae in Northeastern China includes two genera with each only one species i. e. Phegopteris polypodoides Fee and Thelypteris palustris (Salib.) Schott. In the present paper all stages of the development of gametophytes in the two ferns have been studied and compared.The main differences between them on the development of gametophytes are as folllows:Phegopteris polypodoides: ① The perine of the spore lophate and united in false reticulum. ② The germ filaments 2-7 cells long, each cell long cylindrical and linked each other in sausage-shap, the terminal cell of them curved, often with 3-7 branches. ③ Prothallial plate cells primarily ranged regularly, exhibited by transverse and longitudinal cell walls. ④ The hairs just occur when the anterior part of the prothallial plate 14 or occasionally 6 cells broad Stage. ⑤ The margin cells linked with the hairs protrude extremly and result in the margin lobulate. ⑥The prothallial development is more or less of the Adiantum-type (Nayar Kaur 1971) and the hairs occur late. ⑦ Vascular cells exceptionally observed on the midrib of the older female prothalli and they are united into a vascular system.Thelypteris Palustris:①The perine of the spore irregularly rugulate and with small spinate process. ② The germ filaments 2-6cells long withourt any branch, cells cylindrical ③ Prothallial plate cells throughout ranged irregularly.④ The hairs occur soon after the apical cell appeared on the germ filaments. ⑤The margin cells the hairs linked protrude slightly or not, without lobus on the margin of the prothalli. ⑥ The prothallial development is of the Aspidium-type (Nayar Kaur 1971). ⑦ Without vascular cells in the midrib of the prothalli.Before Ching's reclassification, the above two species all belonged to one genus i. e. Thelypteris. Ching (1963) classified them into two genera and each above species is the typus generis in each genus. According to our present work their development of gametophytes in the main characteristics differ obviously from each other, it is evident that China's idea is reasonable.Vascular cells in the median midrib of the older prothalli of Phegopteris polypodoieds were observed, is it either a reflex of their primitive characteristics or an abnormal structrue due to the induction of culture condition?
    STUDIES ON TMV CP AND CMV CP GENES CARRIED INTO TOMATO BY BINARY VECTOR WITH AGROBACTERIUM RHIZOGENES
    Xu Xiang-ling, Shi Rui, Liu Wei-hua, Li Ji-lin
    1994, 14(4):  416-423. 
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    Using Agrobacterium rhizogenes with Ri-plsmid (PRiA4b) to be medium,the binary vector PBTC 8 (T-DNA with CMV-cp and TMV-cp genes) was transforred in to cultivated tomato of Heilongiiang province. The method of hypocotyl,apical half of epicotyl and cutting cotyledon sections was used to induct hairy roots. Agropion and mannopine were detected in half of these hairy roots by electrophores. Some hairy roots were get by the method of sdlection medium with kanomycine resistance. The adventitious bud and regeneration plant were induced from cullus with kanomycine resistance on infected cotyledon piece. Detecting the alkaloid, PCR and DIBA (Dot Immunobinding Assy),it certified there were TMV-cp and CMV-cp genes, Agropion and mannopin in the regeneration plant We got deuble traslative plant.
    PRODUCTION AND CYTOGENETICS OF OCTOPLOID ALLOPLASMIC TRITITRIGIA
    Xue Xi, Wang Yong-qing, Xu Xiang lin, Wang Tong chang, Li Ji-lin
    1994, 14(4):  424-433. 
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    In crossing eight alloplasmic lines of"Chinese Spring" with four lines of octoploid trititrigia, 8 groups and 32 forms of alloplasmic trititrigia were produced.It has shown that obvious differences on seed-set rate of crossing generation and fertility of backerossing offsprings relate to not only different types of alloplasm and also different backerossing parents as well, so that is a obvious interaction between nuclears and cytoplasm. Different types of alien eytoplasm influence F1's characters including plant height, tillering number, mature Period and kernal plumpness. Chromosome pairing in PMCs of F1 hybrids was compared among crossing combinations.
    THE INFLUENCE OF ECOTOPE DIVERSITY ON THE FLAVONOIDES CONTAINED IN ALLIUM L
    Tan Zhong ming, Xu Jie mei, Zhao Bing-xiang
    1994, 14(4):  434-438. 
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    Thorough research on the thin-layer chromatography of navonoides of Allium prattii C. H. wright apud Forb. et Hemsl., A. ovalifolium Hand. -Mazz, A.fistulosum L. and A. hookeri Thwaites collected from different local populations,we have discovered that ecotope diversity has great influence on the navonoides of Allium Plants.
    STUDY ON THE MEASURMENT METHOD OF THE ECOLOGICAL NICHE OF KOREAN PINE AND LARCH POPULATION IN ARTIFICIAL FOREST COMMUNITY
    Chen Xiao-qun, Yang Kai, Chen Dan-lin
    1994, 14(4):  439-447. 
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    Using connection analysis of grey theory, We got the dominant ecological factors affecting the productivity of artificial Korean Pine forest community and artificial Larch forest community. On one-dimension and multi-dimension graclient of dominant ecological factors, We advanced niche calculation formula group:Nij(N1)=???(Pij×qij)1/2,Pij(SDR4)=B'+D'+C'+H'/4,qij(光)=(1-Ii)×Wij、qij(Water)=K×Wij,qij(Organic matter)=Wij/W·N(n)=√N12+N22+…+Nn2,The calcalation results show that the highest tree-height grade population of the same aged appeared the resource niche that the soil water content exceeds 25%, soil organic matter content more than 6%.
    STUDIES ON ANATOMICAL STRUCTURE OF STEM AND FORMATION OF THE ADVENTITIOUS ROOT OF CUTTING OF PICEA KORAIENSIS
    Jiang Jing, Weng Yu hui, Liu Gui feng
    1994, 14(4):  448-452. 
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    The materials of cutting base of Picea koraiensis were fixed in FAA solution at July-August, 1992, and the anatomical study on occurrence of adventitious roots were carried out through paraffin-cut section method. The resuls show that there are two ways of inducing root primordia from cutting of Picea koraiensis. One is the callus rooting type. the primordia forms from the regenerated cambium of calli or from the proto-yascular cambium when calli form at vascular cambium of stem. The oher is non-callus rooting type, the axial primordia of adventitious roots from directly from vascular cambium, cortex at cut and the Parenchyma between primary xylem and second xylem the radial primordium of adventitious roots form from parenchyma of vascular cambium above 0.1-0.3cm of cut of stem, the intersect between vascular cambium and xylem lay and leaf gap ect. Both the numbers and time of development of adventitious roots are significant different among individuals.