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    15 December 2000, Volume 20 Issue 4
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    TWO NEW SPECIESOF SPIRAEA
    WANG Tie-Juan, ZHAO Yi-Zhi
    2000, 20(4):  361-364. 
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    A NEW SPECIES OF ARISAEMA FROM EMEISHAN
    ZHU Zheng-Yin, MIN Bai-Qing
    2000, 20(4):  365-366. 
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    THE NEW RECORDED A SPECIES OF DIGERA IN THE CONTINENT OF CHINA
    HE Jia-Qing
    2000, 20(4):  367-368. 
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    During the years of 1992-1997, the author had made a number of collections of the plants specimens about 1500 numbers in 20 counties and cities of River Huai plain of north Anhui province. The identified result shows that a species reported in this paper are recorded for the first time in China. The is D. arvensis Forsk. All the voucher specimens are housed in the Herbrium of resource, Anhui university (AUR).
    THE TAXONOMIC STUDY ON OXYTROPIS MOELLENDORFFII BUNGE (LEGUMEN)
    LIU Lian-Fen, QIAN Guan-Ze, ZHANG Yong-Zhong
    2000, 20(4):  369-371. 
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    The author gave out his new opinion about the taxonomic study of the species Oxytropis moellendorffii Bunge——By amount of study to the origin species and materials, the author pointed out that the species O. wutaiensis Tatewaki et Hurusawa is just the species O. moellendorffii Bunge, and the variety O. wutaiensis Tatewaki et Hurusawa var. glabrata Tatewaki et Hurusawa was found to be a same as the original variety. Beside this, the author published a new variety of O. moellendorffii Bunge——var. sylinchanensis (Franch.) G. Z. Qian.
    LEAF EPIDERMAL CHARACTERS OF SOME SPECIES OF ROEGNERIA AND THEIR TAXONOMIC SIGNIFICANCE
    CAI Lian-Bing
    2000, 20(4):  372-378. 
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    representative species selected from the different sections and series of Roegneria are examined in leaf epidermal anatomy in the present paper. Based on the leaf epidermal characters displayed by these species (including Roegneria species anatomized in the past), the rationalities of the dividing and coexisting Roegneria in the tribe Triticeae and the subdivision below the genus are confirmed, the evolutional levels and systematic relationships of the major taxa in the genus also revealed. In these characters, the forms of long cell walls, the guantity and shapes of short cells, the types and density of appendages, and so on possess probably the values for differentiating sections or series; the winding of long cell walls, the increase and crescent change of short cells, the decrease of prickle hairs, the emergence of hooks and macro 1hairs, and so foth are probably parallel to the phylogenetic development of the taxa. The last results show that the sect. Goulardia (Husnot) L. B. Cai is the most primitive in Roegneria; in the phylogenetic process, it might produce the sect. Roegneria and the sect. Ciliaria (Nevski) H. L. Yang which are more advanced than it, and also the sect. Curvata (Nevski) H. L. Yang which is the most advanced among the 4 sections. In the sect. Ciliaria (Nevski) H. L. Yang, the ser. Dentatae Nevski is the most primitive in the section, the ser. Ciliares Nevski is more advanced than the former, the ser. Platyphyllae L. B. Cai is the most advanced among the 3 series, and the ser. Ciliares Nevski and the ser. platyphyllae L. B. Cai might be derived successively from the ser. Dentatae Nevski. Furthermore, the systematic relationships of Roegneria basically are in agreement with the evidences furnished by sytology and morphology.
    THE COMPARATION OF THE HETEROMORPHOSIC ANTHERS OF CHLORANTHUS HENRYI (CHLORANTHACEAE) AND ITS PHYLOGENETIC MEANINGS
    WANG Yue-Hua, YANG Ke
    2000, 20(4):  379-384. 
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    The development, pollination and fruitset effect of the inflorescence of Chloranthus henryi in Northeastern Yunnan have been observed and studied in this paper. The result shows that both of the terminal and the lateral inflorescence can mature and fruit, but their stamen are heteromorphosic, e.g. the terminal's developed underground are with 3 elongated connectives and 4 pollen sacs, but the lateral's developed above ground are with only a shortened connective and 2 pollen sacs and appear a serial of variations, from 2 sac's anther with residue of lateral connective to 2 pollen sac's anther without residue of lateral connective and then to anther just with 1 pollen sac occasionally. The pollination experiments and indoor plantation show that the plant is not insect-pollinating but with high fruit-set. Such simplification probably is a secondary adaptation to the self-pollination. The specimen of Chloranthus henryi with only lateral inflorescence resemble those of another species Chloranthus multistachys exactly and both of them have very similar distributions, which suggested that the later is most probably the individuals of the former in the late life cycle.
    A STUDY OF POLLEN WALL ULTRASTRUCTURE OF KMERIA SEPTENTRIONALIS
    XI Yi-Zhen, ZHANG Yu-Long, LIN Qi, ZENG Qing-Wen
    2000, 20(4):  385-388. 
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    The pollen morphology and the wall ultrastructure of Kmeria septentrionalis are first reported in this paper. The pollen morphology shows similarity to the remainder of the family Magnoliaceae, and belongs to the primitive type within the present angiosperms. The wall ultrastructure shows the rugulate ornamentation of exine; sinuous tectum with perforations; very thin columellae, typical columella, shorter and erect, and belongs to the advanced type within the tribe Magnolieae.
    STUDY ON ANTHESIS FLAWERING AND FERTILITY OF LILIUM CONCOLOR SALISB. VAR PULCHELLUM (FISCH) REGEL
    YANG Li-Ping
    2000, 20(4):  389-394. 
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    One capsula of Lilium concolor salisb. var. pulchellum (Fisch.) Regel contains 33 to 208 seeds whose weight per 1000 seeds is 3.5g, germintion rate (66.0±3.8)% and longivity 2 years. Plant initiates to differentiate one flower in 2 years old in seedling nursery. And flowering rate of the lily is 56.6% but flowers are serious malformation. The 66.7% of malformation rate, which includes 16.7% of corolla malformation and 20% of gynecium malformation, results in 20.0% of fecandity. The average number of mature seeds per capsula is 75 seeds. All plants can differentiate 1 to 3 flowers whose corolla is normal and malformation rate of gynecium 35.1% in 3-years old. While the fertility rate of the lily is 62.1%. The reason of flower malformation, especially gynecium malformation, may be an adaptation favouring the continuance of the population under cultural conditior.
    INTEGRATED CHARACTERISTICS OF WOODEN PLANT SEEDS AND THE RELATIVITY OF ADVANCED GERMINATION METHODS
    ZHOU De-Ben, LIANG Ming, ZHANG Yue, SHEN Guang
    2000, 20(4):  395-401. 
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    According to configuration, anatomy, size, and family or genus, there are five methods to advance germination of the wooden plant seeds, namely non-endosperm and radicle-exposed seeds——deal with low temperature or low temperature stratum(0~5℃);Ovule-differentiated or terribly minute or resting seeds——deal with low temperatur(0~10℃) combined with high or middle temperature;Hard and capsule-obstacled seeds——deal with boiling water, chemical medicine, physical crach, bacteria, or being embedded in the second year; Small seeds——direct seeding or deal with hormone;Seeds which will germinate when direct seeding——at normal temperature, fulfil the necessary condition such as water, atmosphere and so on. Many experiments have proved the dependability of these methods.
    STUDY ON KARYOTYPES OF ARTEMISIA SECT. DRACUNCULUS BESS.IN NORTHEAST CHINA
    WANG Ling-Shi
    2000, 20(4):  402-410. 
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    The Chromosome numbers and karyotypes of ten taxon to Artemisia Sect. Dracunculus Bess. in Northeast China are reported. The karyotype formulae are as follows: Artemisia dracunculus L. (2n)=4x=36=28m+8sm; A. scoparia Waldst. et Kit. (2n)=2x=16=12m+4sm; A. halodendron Turcz. ex Bess.(2n)=4x=36=30m+4sm+2st; A. oxycephala Kitag. var. oxycephala (2n)=4x=36=28m+6sm+2st; A. oxycephala Kitag. var. xingkaiensis G. Y. Zhang (2n)=4x=36=28m+6sm+2st; A. oxycephala Kitag. var. shanhaiensis G.Y.Zhang(2n)=4x=36=2M+28m+4sm+2st; A. oxycephala Kitag. var. taiyangensis G.Y.Zhang (2n)=4x=36=28m+6sm+2st; A.pubescens Ledeb. var. pubescens (2n)=4x=36=28m+6sm+2st; A. pubescens Ledeb. var. gebleriana (Bess.) Y. R. Lin (2n)=4x=36=28m+6sm+2st; A. pubescens Ledeb. var. taheensis G.Y. Zhang (2n)=4x=36=28m+6sm+2st.
    PATH COEFFICIENT ANALYSIS OF PHOTOSYNTHESIS AND TRANSPIRATION OF ADENOPHORA LOBOPHYLLA AND STOMATA BEHAVIOR
    MA Shu-Rong, WU Suang-Xiu, WU Yu, YAN Xiu-Feng, ZU Yuan-gang
    2000, 20(4):  411-415. 
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    The relationships between altitude changes of photosynthesis and transpiration of A. lobophylla and the stomata behavior are analysed by correlation coefficient and path coefficient analysis. The correlation coefficient were not significant between stomata behavior, photosynthesis and transpiration, and the stomatal limitation for photosynthesis and transpiration of A. lobophylla were not evident. The influences of stomata open were evident on photosynthesis rate and intercellular CO2 concentration of A. lobophylla, and effect of stomata conductance with transpiration rate were big.
    STUDY ON PEROXIDASE ACTIVITY AND ITS ISOENZYMES IN CALLUS DIFFERENTIATION OF COMMON BUCKWHEAT
    HAO Jian-ping, PEI Yan-xi, QU Yun-bo
    2000, 20(4):  416-419. 
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    On various mediums with different variety and level of phytohormone, cotyledon callus of Longshan common buckwheat showed different differentiation states: (1) no differentiation took place; (2) root differentiation; (3) bud differentiation and (4) plantlet differentiation. The ratio of peroxidase activity in 4 kinds of calli is 1:1.47:5.95:7.78. There appeared also significant difference among their zymogram of peroxidase isoenzyme. Band 4' in zymogram is characteristic for the differentiated callus; band 2' is common for the undifferentiated and the differentiated; band 1' is of shortage for the differentiated root and the undifferentiated; band 3' is an extra for the undifferentiated.
    STUDY ON SAUR-IPT GENE TRANSFORMED TRIGONELLA. FOONELLA. FOENUM. GRAECUM
    HUANG Yong-Hong, YOU Feng-Li, KONG Ruo-Dong, WANG Fu-De, WANG Qing-Yin, FU Gui-Rong, HUANG Yong-Fen
    2000, 20(4):  420-426. 
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    By means of the pollen tube pathway, the Ti plasmid which carrying the SAUR-ipt gene was transferred into Trigonella. Foonella. Foenum. graecum. We tested D1 generation plants with DNA southern blot hybridization and got five transformed plants. Analyzing the changes of morphology physiology and field characters of D3, D4 and D5 generation transformed plants, we found that the plants were dwarf slightly, amount of branch and double-legume increased, the shape of leaf became narrow, the content of chlorophyll and plant pastern increased in D4 generation, and solvable protein and ZRs increased in D5 generation. They are all reveal positive pertinence for the yield. Therefore, it is proved that SAUR-ipt gene already transferred into Trigonella. foonella. foenum. graecum.
    THE CROWTH EFFECT BY N+ USING A PLASMA IMERSION ION IMPLANTER OF PEA SEED IMPLANTED
    DU Lan-Fang, YU Da, LU Xiang-Yun, WU Mei-Ping, PAN Chong-Guang
    2000, 20(4):  427-432. 
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    The genetic effect on plant growth by plasma immersion ion implanter after implantation on pea seed was studied. The results showed the seed treated was not only the germination percentage decline but also the plant growth retardation, and the stem of a plant was low. The semilethal dosage was 20 minutes. Being an economical and available method plasma immersion ion implantation in mutagenic breeding was proposed.
    STUDY ON EXTRACTION OF CAMPTOTHECIN BY NAOH AQ. FROM FRUITS OF CAMPTOTHECA ACUMINATA
    WANG Yang, YU Tao, ZHANG Yu-Hong, ZU Yuan-Gang
    2000, 20(4):  433-437. 
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    The optimal conditions of extraction of Camptothecin by NaOH aq. from fruits of Camptotheca acuminata using orthogonal experimental design were studied. The optimal conditions are as follows: the concentration of NaOH aq. is 0.3%, the extracted time is 3~4 hours, the volume of extracted solvent is 16ml/g raw material·time, and the extracted temperature is room temperature.
    THE RESEARCH OF SUCCESSION PROCESS OF QUERCUS LIAOTUNGENSIS COMMUNITY ON DONGLING MOUNTAIN WITH CONTINOUS TIME MARKOV APPROACH
    CONG Pei-Tong, ZHAO Ze-Hai, ZHANG Wen-Hui, SHI Jun, ZU Yuan-Gang
    2000, 20(4):  438-443. 
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    The succession process of Quercus liaotungensis community on DongLing Mountain in Beijing was researched with Continuous Time Markov Approach in this paper. Based on comprehensive consideration of the elements such as influential factor, species composition and age distribution, CTM of Quercus liaotungensis community succession was made and the main succession trend of Quercus liaodungensis community was simulated.
    STUDY ON LIFE TABLE OF DIOSCOREA NIPPONICA POPULATION
    LI Jing-hua, WANG Hua-tian, ZHANG Cheng-jun
    2000, 20(4):  444-449. 
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    By investigation on age structure of wild Dioscorea nipponica in Sanchazi Forestry Bureau of Jilin Province, we established static life table of wild Dioscorea nipponica population. The results showed that its mortality rate was very low during the ages of 3~15 years old, but after that began to increase, especially evident after 25 years old. The distribution type of the individual number of different age classes belonged to normal distribution within 30 years. 30 years later, however, its distribution type diverted from normal distribution, and showed that the number of individuals of each age class decreased linearly. The mean of longevity was also found obviously getting higher after 30 years. In brief, this life table fully indicates that population dynamic of Dioscorea nipponica in this region was declining and that this species is being endangered.
    THE RELATIONS BETWEEN VEGETATIVE GROWTH AND REPRODUCTION IN ARTIFICIAL PINUS TABULAEFORMIS POPULATION
    WANG Ren-Zhong
    2000, 20(4):  450-457. 
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    The relations between vegetative growth and reproduction is one of the important substances in plant reproductive ecology. There have been many research reports abroad in this field since 1970's. However the domestic reports are rare. The experiments on the relations between vegetative growth and reproduction in Pinus tabulaeformis were conducted in an artificial population. The results show that there are not significant different between one year female shoots and male shoots in the same direction, except the diameters in the west, and biomasses in the east and west. There are significant different between new growing female shoots and male shoots in spore biomass, shoot length and shoot biomass in the same direction. The length, diameter, biomass of same sexual shoots are significantly different among the four directions(in west, east, south and north).
    THE STUDY OF CLASSIFICATION AND SUCCESSION OF ALNIPHYLLUM FORTUNEI FOREST IN GUANGXI
    WANG Xian-pu, LI Jun-qing
    2000, 20(4):  458-471. 
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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 subtropical deciduous broadleaf forest.3 Plant Association Classes and 13 Plant Associations are described. 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.