摘要
青海可可西里地区位于青藏高原的腹地,平均海拔约5000m,气候干燥寒冷,自然环境极端严酷,植物种类相对贫乏。本文报道了该地区9种植物的染色体核型。它们是:西域龙胆Gentiana clarkei Kusnez.核型公式为2n=24=6m+2sm+16st(2SAT);蓝侧金盏花Adonis coerulea Maxim,核型公式为2n=16=6m+10sm;镰叶韭Allium carolinianum DC.核型公式为2n=16=12sm+2sm+2st;鸦跖花Oxygraphis glacialis(Fish.)Bunge核型公式为2n=16=6m+6sm+4st;西藏虎耳草Saxifraga tibetica A.Losinsk.核型公式为2n=16=6m+2sm+8st;单花翠雀花Delphinium candelabrum Ostenf.var.monanthum(Hand.-Mazz.)W.T.Wang核型公式为2n=16=8m+6sm(2SAT)+2st;黄花唐古拉翠雀花Delphinium tangkulaense W.T.Wang f.xanthanthum W.T.Wang et S.K.Wu核型公式为2n=16=2m(2SAT)十14sm(2SAT);卵叶银莲花Anemone obstusiloba D.Don ssp.ovalifolia Br(?)hl核型公式为2n=14=6m+6sm+2t;美花草Callianthemum pimpinelloides Hook.f.et Thoms.核型公式为2n=16=6m+10sm。其中除鸦跖花、卵叶银莲花和美花草外,其余种类的染色体本文属首次报道。
Hohxil Region, Qinghai, is situated in the hinterland of Qinghai-Xizang Plateau. The flora is characterized as poor plant species and simple structure since the average altitude there is about 5000 meters with bitter alpine cold-drought climate and nature condition. This paper deals with the karyotypes of 9 species from Hohxil Region, and their karyotypic formulae are pressented as follows:1. Gentiana clarkei Kusnez.: 2n = 24 = 6m+2sm+16st(2SAT); 2. Adonis coerulea Maxim. :2n= 16 = 6m+10sm; 3. Allium carolinianum DC.:2n= 16= 12m+2sm+2st; 4. Oxygraphis glacialis (Fisch.)Bunge: 2n = 16 = 6m+6sm+4st; 5. Saxifraga tibetica A.Losinsk.: 2n=16 = 6m+2sm+8st; 6. Delphinium candelabrum Ostenf. vai.monanthum (Hand.-Mazz.); 2n=16 = 8m+6sm(2SAT)+2st; 7. Delphinium tangkulaense W.T.Wang f. xanthanthum W.T.Wang et S.K.Wu :2n= 16 = 2m(2SAT)+14sm(2SAT); 8. Anemone obstusilobaD.Don ssp. ovalifolia Bruhl.:2n= 14 = 6m+6sm+2t; 9. Callianthemum pimpinelloides Hook.f.et Thorns.:2n= 16 = 6m+10sm. Among them, the karyotypes of 6 species except O. glacialis, A. obstusiloba and C. pimpinelloides are reported for the first time.
出处
《云南植物研究》
CSCD
1993年第2期173-178,共6页
Acta Botanica Yunnanica
关键词
可可西里地区
染色体
植物
Hohxil Region
Plant chromosome and Karyotypes
