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Table of Content
25 February 1992, Volume 14 Issue 01
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  • Articles
    TWO NEW STEROID SAPOGENINS OF PARIS POLYPHYLLA VAR. YUNNANENSIS
    CHEN Chang-Xiang ZHOU Jun
    1992, 14(01):  1-3. 
    Abstract ( 2352 )   HTML ( )   PDF (65KB) ( 1118 )   Save
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    A NEW ANTITUMOR GLYCOCYCLOHEXAPEPTIDE AND ARBORANE TYPE NEW TRITERPENOIDS FROM RUBIA YUNNANENSIS
    ZOU Cheng HAO Xiao-Jiang CHEN Chang-Xiang ZHOU Jun
    1992, 14(01):  1-3. 
    Abstract ( 2354 )   HTML ( )   PDF (24KB) ( 1179 )   Save
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    The roots of Rubia yunnanensis Diels,known as"Xiao Hong Sheng",are used as antitumor drug in Yunnan.From methanol extract of the plant,a new glycocyclohexpeptide and a cyclohexapeptide (deoxybouvadiv)with high antitumor activity,together with ten arborane type triterpenoids including seven new ones,were isolated and their structures were elucidated on the basis of spectral and chemical methods.
    STUDIES ON THE INTRODUCTION AND CHEMICAL CONSTITUENTS OF ESSENTIAL OIL OF CINNAMOMUM BURMANNII F. HEYNEANUM
    CHEN Bi-Qiang XU Yong ZENG Feng-Xian YU Xue-Jian DING Jing-Kai WU Yu
    1992, 14(01):  1-3. 
    Abstract ( 2814 )   HTML ( )   PDF (196KB) ( 1304 )   Save
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    Cinnamomum burmannii (C. G.&Th. Nees) Bl. f. heyneanum (Nees) H.W.Li was originally a wild plant. The percent of the seeds germination is from 70 to 90. The main components in safrole keep the features of the parent when the seeds is used for propagation. It usually begins to blosoom at the age of four to six years planted. Branches and leaves on the plants at 3-4 years old are ready to be collect for aromatic oil distillation. The essential oil with the yield from 0.54 to 0.85 from the fresh leaves was obtained by steam distillation. The safrole content of main components in 97 to 99 is the highest safrole content among any othen Cinnamomum plants. Therefore, Cinnamomum burmannii f. heyneanum is a new perfumi plant which is worth to develop greatly.
    ACETYLENIC ACIDS FROM SEED OIL OF SCLEROPYRUM WALLICHIANUM
    WANG Jing-Ping LI Jmg-Ming Yu Feng-Lan
    1992, 14(01):  1-3. 
    Abstract ( 2612 )   HTML ( )   PDF (123KB) ( 1436 )   Save
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    The oil content of Scleropyrum wallichianum is 37.7%. Two acetylenic acids octadec-9-ynoic and 17-octadecen-9-ynoic acids were separated and identified by chemical modification in MS and 'H NMR, "C NMR. The other eleven fatty acids decanoic, lauric, palmitic, stearic, arachdic, behenic, hexadecenoic, oleic, eicosenoic, erucic, linoleic acids were determined.
    CHEMICAL CONSTITUENTS ON THE ROOTS OF DESMOS CHINENSIS
    ZHAO Jin
    1992, 14(01):  1-3. 
    Abstract ( 2176 )   HTML ( )   PDF (132KB) ( 1080 )   Save
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    From the roots of Desmos chinensis Lour (Annonaceae), a folk medicine for treatment of malaria in China, two flavonones were isolated by means of chemical and spectral data. These two compounds have been identifies as 4,7-dihydroxy-5-methoxy-6-mcthly-8-formyl-flavane and 5,7-dihyroxy-6,8-dimethyl- dihydroflavonce (demethoxymatteucinol), respectively.
    IRIDOIDAL GLYCOSIDES FROM TRIPLOSTEGIA GRANDIFLORA
    MA Wei-Guang WANG De-Zu ZENG Yu-Lin YANG Chong-Ren
    1992, 14(01):  1-3. 
    Abstract ( 2602 )   HTML ( )   PDF (149KB) ( 1333 )   Save
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    A new bis-iridoidal glycoside. triplostoside A have been isolated from the roots of Triplostegia grandiflora Gagnep. (Dipsacaceae) along with the known iridoids, methyl loganin, loganic acid, sweroside and daucosterol. Its structure was elucidated on the basis of spectral da-ta and chemical evidence.
    SEED DORMANCY AND GERMINATION IN MEDITERRANEAN SENECIO VULGARIS
    RENZhu-San ABBOTTR.J.
    1992, 14(01):  1-3. 
    Abstract ( 2798 )   HTML ( )   PDF (241KB) ( 1367 )   Save
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    Fresh seed derived from a Mediterranean population of non-radiate Senecio vulgaris L. showed strong innate dormancy over a wide temperature range. In contrast, fresh seed of British S. vulgaris exhibited > 80 per cent germination at 20f .Dormancy in Mediterranean seed was overcome by: prolonged storage at 15°C and above; a short stratification treatment (two weeks at 4°C); prolonged leaching with water; treatment with gibberellic acid (GA3) alone (and with kinetin); and to a lesser extent, by wounding (i.e.removal of a small portion of the fruit and seed coat).
    SEED PROPAGATION OF RHODODENDRON
    ZHANG Chang-Qin FENG Bao-Jun ZHAO Ge-Yin LU Zheng-Wei YANG Zeng-Hou
    1992, 14(01):  1-3. 
    Abstract ( 2967 )   HTML ( )   PDF (173KB) ( 1418 )   Save
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    Seed propagation of Rhododendron was researched in this paper. The character istics of seedling's growing of Rhododendron was observed in kunming.
    JUVENIL EMBRYO CULTURE AND PLANTLET CLONAL PROPAGATION OF THE JIANSHUI SEEDLESS TANGERINE ORANGE ( CITRUS RETICULATE ) IN VITRO
    HUANG Shi-Zhou XIONG De-Hua
    1992, 14(01):  1-3. 
    Abstract ( 2599 )   HTML ( )   PDF (304KB) ( 1292 )   Save
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    The juvenile embryos of Citrus reticulate Blanto after blossom 120 days were used as experiment material. The tufted shoots and all kinds ofembryoid can be induced on MT medium with BA 0.5mg / 1 or IBA 0.5mg/ 1 or BA 0.2mg/ 1 +2, 4-D 1.5mg/ 1. The multiplication and growth of globularity embryoid and seed-leaf embryoid were nice in medium with IBA 0.5-1.Omg/ 1, BA 0.5mg/ 1 was very satisfied with forming tufted shoots from seed-leaf embryo.
    IN VITRO FLORAL BUD FORMATION ON BRACTLETS OF NICOTIANA TABACUM
    XU Rui-Juan LI Wen-An
    1992, 14(01):  1-3. 
    Abstract ( 2716 )   HTML ( )   PDF (393KB) ( 1320 )   Save
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    The bractlets in a inflorescence of Nicotiana tabacum, which were cultured in MS medium containing 2. Omg/1 6-BA, 0.2mg/l IBA directly formed vegetative buds, floral buds, or / and callus. The histological aspect of flower bud development in vitro were studied. It was found that the floral buds may originated from sub-epidemic layers. The physiological state of mother plant strongly effected the flowering of bractlets in inflorescence of N. tabacum in vitro. Only when the mother plants entered the stage of reproductive growth, the floral bud might form in vitro.
    EMBRYOLOGICAL STUDIES OF LITCHI CHINENSIS
    YE Xiu-Lin WANG Fu-Xion QIAN Nan-Fen
    1992, 14(01):  1-3. 
    Abstract ( 2687 )   HTML ( )   PDF (807KB) ( 1363 )   Save
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    The present paper deals with the embryology of Litchi chinensis Sonn. The results are summarized as follows: The ovule is anatropous, with 2 integuments, obturator present, crassinucellar, archesporial functioning directly as the megaspore mother cell. The chalazal megaspore is functional. The development of the embryo sac conforms to the normal type. The formation of the microspores is of successive type. Mature pollen grain is 2-celled. The wet stigma surface has many papillar cells. The polar nuclei fuse before fertilization. Two sperms fuse with egg cell and secondary nucleus respectively 64 hours after pollination. Three antipodal cells are ephemeral. The endosperm is of nuclear type. The aril originates from the outer integument.
    COMPARATIVE ANATOMY OF BAMBOO EMBRYO AND THEIR SYSTEMATIC CLASSIFICATION
    HU Cheng-Hua YU Fu-Gen CHEN Ling
    1992, 14(01):  1-3. 
    Abstract ( 2976 )   HTML ( )   PDF (816KB) ( 1351 )   Save
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    The anatomical types of the embryo of the bamboo fruits are variable and compli-cated. A lot of characters such as the anatomical types of the embryo, the angles between the radicle and scutel, between the plumule and scutel, the curve degree of the embryo, the exten-sion degree of the mesocotyl, and the size, pattern of the scutel, are more or less different among the bambotaxa.
    THE LICHEN FAMILIES ALECTORIACEAE AND ANZIACEAE IN LIJIANG PREFECTURE, YUNNAN
    WU Ji-Nong WANG Li-Song
    1992, 14(01):  1-3. 
    Abstract ( 2969 )   HTML ( )   PDF (560KB) ( 1353 )   Save
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    There are 4 genera and 12 species with 2 forms of Alectoriaceae and Anziaceae, which have been reported recently by the authors from Lijiang Prefecture (Mt. Yu long. and ad-jacent regions) of Yunnan. As a result, Bryoria lactinea and Anzia colpota are new to China; Bryoria asiatica, B. confusca. B. smithii, £. variabilis; Oropogon asiaticus, 0. formosanus, 0. orientalis are new to Yunnan; Oropogon secalonicus and Anzia leucobatoides are endemic to China; Anzia leucobatoides f.hypomelaena is endemic to Yunnan, Sulcaria sulcata and Sulcaria sulcata f. vilpinoides are very common species in the area.
    THE STRUCTURE OF NUTRITIVE BODY IN ANOECTOCHILUS ROXBURGHII
    ZHANG Zhen-Jue CHEN Yu LIN Kun-Rui PAN Wei-Xiong
    1992, 14(01):  1-3. 
    Abstract ( 2469 )   HTML ( )   PDF (311KB) ( 1401 )   Save
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    Anoectochilus roxburghii (Wall.) Lindle. is a perennial terrestrial orchid, which has rhizome. There are endodermises in its stem and root. The Casparian strip thickening occurs on the endodermis. The number of protoxylem groups in root is five to nine. In stem, 12-18 vascular bundles are arranged in 2-3 circles. Palisade tissue and spongy tissue can be distin-guished in the mesophyll. In the former, the chloroplasts are bigger and dark green; in the latter, the chloroplasts are smaller and pale green.
    TWO NEW SPECIES OF THELYPTERIDACEAE
    ZHOU Hou-Gao LI Hua
    1992, 14(01):  1-3. 
    Abstract ( 2369 )   HTML ( )   PDF (362KB) ( 1122 )   Save
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    Species P.angularilobae(Ching)Ching et P.hirsutipiti(Clarke)Ching affinis,differt ab ambobus lamina oblonga,segmento basilari antico pinnae manifesto majoriore auriformi,postico usque 2 mm e rhache separato,pinna pinnatilobata apice rotundata vel acuta, vena in segmento 2-3-juga;a priore venulis subtus glandulis coccineis petiolulatis obovatis vel ellipticis sparsibus;a posteriore indusiis dorse pilosissimis, venulis subtus glandulis petiolulatis obovatis vel ellipticis sparsibus.
    A NEW INDOLE ALKALOID FROM LEAVES OF MELODDINUS HENRYI
    LI Chao-Ming TAO Guo-Da ZHOU Yim-Li
    1992, 14(01):  1-3. 
    Abstract ( 2160 )   HTML ( )   PDF (60KB) ( 1064 )   Save
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    A NEW SPECIES ON MEDICINAL PLANTS OF GENUS HEMSLEYA FROM GUANGXI
    CHEN Xiu-Xiang LIANG Ding-Ken
    1992, 14(01):  1-3. 
    Abstract ( 2159 )   HTML ( )   PDF (123KB) ( 1218 )   Save
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    Haec species affinis H.graciliflorae (Harms)Cogn.sed inflorescentiis femineis cymosis, 2-6-floris;fructibus turbinatis,leptoneuris,stylis persistentibus ad 4-5 mm longis differt.
    TWO NEW SPECIES OF DRACAENA FROM YUNNAN
    YE Guang-Zheng WANG Yan-Cai ZHU Li-Juan
    1992, 14(01):  1-3. 
    Abstract ( 2258 )   HTML ( )   PDF (232KB) ( 1227 )   Save
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    Species D.helferianae Wall.ex  Kurz.affinis,sed  flore monori 18-20 mm longi,pediceli 10 mm longi,prope medium articulati;bacca major 15-20 mm diam differt.
    NOTES ON THE TWO SPECIES OF FAMILY DIPTEROCARPACEAE FOUND IN XISHUANGBANNA
    ZHU Hua WANG Hong
    1992, 14(01):  1-3. 
    Abstract ( 2959 )   HTML ( )   PDF (380KB) ( 1271 )   Save
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    A revision is made to the species of Dipterocarps found in Xishuangbanna, Yunnan Province. The specific epithet of Parashorea chinensis Wang Hsie is a basonym which is trans-ferred to the new combination Shorea chinensis (Wang Hsie) H. Zhu. While the Vatica xishuangbannaensis G.D.Tao et J. H. Zhang is a synonym of Vatica guangxiensis X. L. Mo. In addition, their relative affinities of these two taxa are discussed.
    ON THE VALIDITY OF TANAKA LINE & ITS SIGNIFICANCE VIEWED FROM THE DISTRIBUTION OF EASTERN ASIATIC GENERA IN YUNNAN
    LI Xi-Wen LI Jie
    1992, 14(01):  1-3. 
    Abstract ( 3080 )   HTML ( )   PDF (514KB) ( 1534 )   Save
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    After delimiting the boundaries of Eastern Asiatic genera (mainly Sino-Himalayan & Sino-Japanese ones) in Yunnan, we concluded as follows: (1) In general, ' Tanaka Line' is a real one which is effectively delimited the eastern boundaries of Sino-Japanese genera & the western boundaries of Sino-Himalayan ones; (2) In comparision with the Sino-Himalayan genera, the Sino-Japanese ones are more strict to ' Tanaka Line'. Furthermore, we discussed the origin cause of ' Tanaka Line'& its significance in the study of florististic regionalization in Yunnan and the delimitation of species.
    A STUDY ON MELHANIA HAMILTONIANA IN RELATION TO THE SYSTEMATIC POSITION OF THE GENUS
    TANG Ya
    1992, 14(01):  1-3. 
    Abstract ( 2919 )   HTML ( )   PDF (734KB) ( 1186 )   Save
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    Melhania hamiltoniana Wall. is distributed in extremely limited dry and hot areas of Yuanjiang River (Red River) valley in Yunnan and Irrawaddy River valley in Burma. Its distribution pattern is of interest for further floristic and original study. The systematic posi-tion of the genus Melhania Forsk. has been debatable.