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Search Results: 1 - 10 of 227892 matches for " HONG De Yuan "
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紫斑牡丹及其一新亚种
HONG De,Yuan,
洪德元

植物分类学报 , 1998,
Abstract: The history of exploration and classification of Paeonia rockii is reviewed in the present paper. Two allopatric subspecies in this species are recognized. The new subspecies, subsp. taibaishanica Hong, found on northern slope of the Qingling Range has leaflets ovate or rounded, totally or mostly lobed. P. rockii subsp. linyanshanii T. Hong et G. L. Osti is found to be a superfluous name of P. rockii subsp. rockii.
A subspecies of Paeonia mascula (Paeoniaceae) from W. Asia and SE. Europe
亚洲西部和欧洲东南部芍药属的一个亚种

HONG De,Yuan,
洪德元

植物分类学报 , 2000,
Abstract: The plant from eastern Aegean islands, S. Turkey, Cyprus, Lebanon, Syria and N. Iraq is recognized as a subspecies of Paeonia mascula based on a large quantity of herbarium specimens from the major herbaria in Europe. The subspecies, Paeonia mascula subsp. orientalis (Thiebaut) D. Y. Hong, is characterized by nearly always having some leaflets segmented and the total number of leaflets and segments ranging from (9) 12 to 18 (23); leaflets and segments broadly elliptical to ovate rounded and usually glabrous or sparsely villous on the lower surface.
Xizangia bartschioides (Hand.-Mazz.) D. Y. Hong,a new combination in Scrophulariaceae
Xizangia bartschioides (Hand.—Mazz.)D.Y.Hong——玄参科一新组合

HONG De-Yuan,
洪德元

植物分类学报 , 2001,
Abstract: Evidence is provided in the present article to confirm the generic status of Xizangia. This genus is distinctly different from Pterygiella in having rhizomes with winter buds, serrate leaves, unequally cleft calyx (up to 2/3 in length at anterior), and bubblelike and smooth seed-coat. A new combination, Xizangia bartschioides (Hand.-Mazz.) D. Y. Hong is thus made, and Xizangia serrata D. Y. Hong and Pterygiella bartschioides Hand.-Mazz. are treated as synonymy.
Karyotype Uniformity of Streptolirion volubile subsp. volubile (Commelinaceae) from China and Japan
中国和日本产竹叶子(亚种)(鸭跖草科)核型的一致性

Hong De-Yuan,
洪德元

中国科学院研究生院学报 , 1986,
Abstract: Four populations of the subspecies (one from Mêdog, southern Xizang (Tibet), two from Lunnan, central Yunnan, and the other from Yanqing, Bei- jing), are shown to have uniform karyotype (Plate I, Table 1, Fig. 1 and 2). Although some differences in arm ratio appear among the four populations, the differences are not stadistically significant as shown with 95% confidence limits (Table 1). The kar- yotype shown here is extremely similar to the one reported by Suda and Fedan (1980). But the subspecies was reported to have 2n=6 (Kammathy and Rao, 1964) and 2n=12 from northeastern India (Sharma and Sharma, 1958), with both chromosome number and structure (2n=2M+8m(4SAT)+2st) strikingly different from those of Chinese and Japanese materials (Suda and Fedan, 1980), and 2n=48 from Korea. As the localities where our materials and Suda and Fedan's one came from cover almost the whole dis- tribution area of the subspecies, from the western extreme to the eastern extreme, from nearly southernmost part to northernmost part, the present author spaculate that the re- ports from India and Korea may well be based on misidentified materials. If karyotype formula is used to express the karyotypes of the materials used in this work, they will be 2n=10=2sm+6st(2SAT)+2t (Mêdog, Xizang); 2n=10=2m+ 8st (2SAT)and 2n=10=2sm+8st (2SAT)(Lunan, Yunnan), and 2n=10=2sm+6st (2SAT)+2t (Yanqing, Beijing). As already stated above, however, the differences ex- pressed by the formulae are false ones. Therefore, relative value of karyotype formula should be seriously considered and special caution must be taken when it is used
A New Genus of Scrophulariaceae from Xizang, China
西藏玄参科一新属

Hong De-Yuan,
洪德元

中国科学院研究生院学报 , 1986,
Abstract:
The Geography of the Campanulaceae: On the Distribution Centres
桔梗科的地理分布:关于分布中心问题

Hong De-yuan,
洪德元

中国科学院研究生院学报 , 1995,
Abstract:
Paeonia rockii and Its One New Subspecies from Mt. Taibai, Shaanxi of China
紫斑牡丹及其一新亚种

HONG De-Yuan,
洪德元

中国科学院研究生院学报 , 1998,
Abstract: The history of exploration and classification of Paeonia rockii is reviewed in the present paper. Two allopatric subspecies in this species are recognized. The new subspecies, subsp, taibaishanica Hong, found on northern slope of the Qingling Range has leaflets ovate or rounded, totally or mostly lobed. P. rockii subsp, linyanshanii T. Hong et G. L. Ostiis found to be a superfluous name of P. rockii subsp, rockii.
Xizangia bartschioides (Hand.-Mazz.) D. Y. Hong, a new combination in Scrophulariaceae
Xizangia bartschioides (Hand.-Mazz.) D. Y. Hong——玄参科一新组合

HONG De-Yuan,
洪德元

中国科学院研究生院学报 , 2001,
Abstract: Evidence is provided in the present article to confirm the generic status of Xizangia. This genus is distinctly different from Pterygiella in having rhizomes with winter buds, serrate leav- es, unequally cleft calyx (up to 2/3 in length at anterior), and bubblelike and smooth seed-coat. A new combination, Xizangia bartschioides (Hand.-Mazz.) D. Y. Hong is thus made, and Xizangiaserrata D. Y. Hong and Pterygiella bartschioides Hand.-Mazz. are treated as synonymy.
Echinocodon Hong, a New Genus of Campanulaceae and Its Systematic Position
刺萼参属——桔梗科一新属及其系统位置

Hong De-Yuan,
洪德元

中国科学院研究生院学报 , 1984,
Abstract: Echicocodon Hong (Wahlenbergieae); Gen. nov. Calyx 2-5-saepe 4-fidus; lobis utrinque 2-4-lobulis spiniformibus praeditis. Corolla tu- bulosa; ad medium parterm (3-) 4 (-5)-lobata. Stamina (3-) 4 (-5); libera; sed inter se eonniventia; filamentis basi parum expansis. Ovarium fere inferum; 3-5-1oculare; stig- mata 3-5; demum recurva; linearia; ovula ∞. Capsula globosa; 3-5-locularis; spice locu- licide dehiscens; valvis calycis lobis alternantibus. Semina ∞ ; minima; ellipsoidea; obtuse tri- quetra.——Herbae perennes; lactesentes; radicibus palaribus crassiusculis. Folia alterna; pin- natipartita. Flores solitarii terminalesque vel 2-3 in cymam conferti. Genus monotypicum; in provincia Hubei Sinae cresens. Typus generis: Echinocodon lobophyllus Hong. Echinocodon lobophyllus Hong; sp. nov. plate 1 Herbae diffusae; omnino glabrae; radicibus palaribus ad 5 mm crassis. Caulis ad 40 cm longus; ramosissimus. Folia alterna; petiolis 5-10 mm longis; laminis ellipticis; 5-20 mm longis; 3-15 mm latis; basi anguste cuneatis; apice obtusis; pinnatisectis vel ad medium pinnatipartitis. Flores solitarii terminales vel 2-3 in cymam conferti; pedicellis 1-5 cm longis. Caly- cis lobi ovato-lanceolati; 2-6 mm longi; lobulis spiniformibus exclusis 1-3 mm lati. Corol- la purpureo-caerulea; tubulosa; 3-4.5 mm longa; ad medium (3-)4(-5)-lobata; lobis la- te ovato-diltoideis; ad 3 mm latis. Stamina inter se conniventia; filamentis liberis; 1.5 mm longis; basi expansis; ciliatis; antheris oblongis; 1 mm longis. Stylus 1 mm longus; stigmata linearia; demum recurva. Capsula globosa; 3-5 mm diam.; sed parte supera conica et 2 mm longa. Semina minima; luteo-fusca; ellipsoidea; obtuse triquetra; 0.3 mm longa. China: Hubei Province; Yunxi County; near the town; 300 m alt.; 1 Jul. 1983. Ma Yu- an-jun and Hong De-yuan PB83006 (holotype; PE); the same locality; 11 Jul. 1978; Ma Yuan-jun 3921. The new genus; Echinocodon Hong; shows its systematic position in the tribe Wahlen- bergieae by the inferior ovary and capsule which loculicidally dehisces above the calyx and is closely related to the genera Codonopsis; Platycodon and Wahlenbergia; from all of which it differs in having the calyx lobes with spinelike lobules and the pinnatisect or pinnatipar- tite leaves. From Codonopsis it differs also in having the linear stigma lobes; from Platyco- don also in the capsule valves alternate with the calyx lobes and from Wahlenhergia also in having the 4(5)-colpate pollen grains. Meiosis in pollen mother cells was examined and; 8 bivalents in MI and 8 chromoso- mes in MII were always observed (Plate 2: 1-2). The chromosomt number is thus de- termined to be n=8. The pollen grains taken from the flowers which were fixed in the fields with Carnoy II fixative (6:3:1 absolute alcohol/chloroform/glacial acetic acid) were examined without further treatment under SEM; and under LM a
Chromosomes of Six Fabaceous Species from Baoxing County, Sichuan Province
四川宝兴地区几种豆科植物的染色体

Hong De-Yuan,
洪德元

中国科学院研究生院学报 , 1984,
Abstract: Meiosis and/or mitosis of six species of Fabaceae (Leguminosae) from Baoxing County, Sichuan, China, were investigated. The voucher specimens are con- served in PE. Eight pairs (n=8) and 10 chiasmata in meiosis of pollen mother cells have been observed in Medicago lupulina L. (Pl. 1, A-C). Meiotic observation on pollen mother cells in Lotus tenuis W. et K. shows 6 bivalents (n=6) in MI and 9 chias- mata in diakinesis (Pl. 1, D-E). In this species 12 somatic chromosomes (2n=12) in anther wall cells have also been observed. The chromosomal formula may be expressed as 2n=12=8m+2sm+2smSAT (Pl. 1, F-G). In pollen mother cells of Vicia tetrasperma (L.) Schreb., 7 bivalents in MI and 7 chromosomes in A II have been observed (Pl. 2, A-B). From A II (Pl. 2, B, the inset on the right) the chromosomal formula, n=7= 2m+2sm+lstSAT+2t, may be constructed. Only three chromosomes in this karyotype may be found to have counterparts in the one reported by Srivastava (1963), which shows striking differences between these two karyotypes. Meiotic MI shows 7 pairs (n=7) in Vicia hirsuta (L.) S. F. Gray. Vicia sativa L. is very variable in its chromosomes. Our observation shows 6 pairs (n=6) in MI and in diakinesis in pollen mother cells. In Vicia villosa Roth, all the previous chromosome reports are 2n=14 or n=7, but the result of our work shows that somatic chromosomes are 2n=12 in anther wall cells (Pl. 3, D, E). The karyotype in our material (Pl. 3, E) is that the longest pair of chro- mosomes are metacentric, the pairs 2-4 are terminal, 5 are metacentric and last pair are submetacentric, differing vastly from the idiogram (Pl. 3, F) presented by Yama- moto (1973). Therefore both the chromosome number and structure in our material are greatly different from those in all the previous reports. The evolutionary trends of chromosomes in the genus Vicia is discussed in the work. Srivastava (1963) holds that the primitive basic number of chromosome in the genus is 6 and thus both 5 and 7 are derived. The present author would propose ano- ther possibility that 7 is the original basic number and the other numbers are derived ones. First, as shown in Table 1, x=7 occurs in 47 per cent of species in the genus, but 6 only in 28 per cent. Secondly, x=7 is predominant in the perennial and primitive section Cracca. Thirdly, in genera related to the genus under consideration, such as Lens, Pisum and Lathyrus, x=7 is also the predominant basic number. Fourthly, ac- cording to Raven (1975) 7 is the primitive basic number in the angiosperms and x= 7, 8 and 9 are the predominant in the angiosperms.
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