| 二倍体石蒜在安徽发现 |
| |
| 引用本文： | 邵建章,杨积高,张定成,聂刘旺.二倍体石蒜在安徽发现[J].中国科学院研究生院学报,1994,32(6):549-552. |
| |
| 作者姓名： | 邵建章 杨积高 张定成 聂刘旺 |
| |
| 摘 要： | 本文以根尖细胞为材料，观察了石蒜Lycoris radiata(L′Her．)Herb．三个不同居群植物的染色体数目和核型，发现石蒜为一复合体，包括两种不同类型：(1)三倍体类型，主要包括一群以鳞茎无性繁殖的园艺栽培植株，其染色体数目和核型为2n＝33=33t(st)，属“4A”核型，且极其稳定。(2)二倍体类型，主要包括一群野生植株，变异较大，我们发现有下列几种情况：一是芜湖产石蒜(L．radiata)的野生材料，其染色体数目和核型为2n=21+1B=1m+12st+8t+1B，属“3A”核型，在石蒜种内迄今未见有类似报道；另一是黄山产野生材料，观察到两个细胞型，绝大多数细胞为2n=22＝12st+1Ot，极个别细胞出现2n＝22+1B=6st+14t+2T+1B的情况，均属“4A”核型。芜湖和黄山野生材料的染色体数目和核型均为首次报道。石蒜(L．radiata)的二倍体类群也是首次在安徽发现。
|
| 关 键 词： | 石蒜 二倍体 安徽 |
The Discovery of Diploid Lycoris radiata (L′Her.) Herb. from Anhui |
| |
| Shao Jian-zhang,Yang Ji-gao,Zhang Ding-cheng,Nie Liu-wang.The Discovery of Diploid Lycoris radiata (L′Her.) Herb. from Anhui[J].Journal of the Graduate School of the Chinese Academy of Sciences,1994,32(6):549-552. |
| |
| Authors: | Shao Jian-zhang Yang Ji-gao Zhang Ding-cheng Nie Liu-wang |
| |
| Abstract: | Lycoris radiata (L′Her. ) Herb. containing wild and cultural types, is distributed
in China and Japan. The karyotype variation in three populations of the species from Anhui
is studied in this paper. (1) Wuhu wild population has a karyotype 2n=21+1B= 1m+12st
+8t+1B. The chromosomes range in length from 7.50 to 14.10 µm with the ratio of the
longest to the shortest 1.88. The karyotype belongs to Stebbins’(1971) 3A. (2) Huang-
shan wild population has two cytotypes: 2n=22 and 2n=22+1B. Type Ⅰ: The karyotype
formula is 2n=22=12st+10t. The chromosomes range in length from 6.85 to 9.95 µm.
with the ratio of the longest to the shortest 1.45. The karyotype belongs to 4A. Type Ⅱ:
The karyotype formula is 2n=22+1B=6st+14t+2T+1B (plate 1: 7，8). The chromo-
somes range in length from 6.50 to 11.02 µm. with the ratio of the longest to the shortest
1.70. The karyotype belongs to 4A. (3) Wuhu cultural type has a karyotype 2n=33=30st
+3t. The chromosomes range in length from 7.10 to 9.35 µm with the ratio of the longest
to the shortest 1.32. The karyotype belongs to 4A. This result agrees well with the previous
reports. The diploid types of Lycoris radiata (L´Her.) Herb. are found in Anhui for the firsttime. |
| |
| Keywords: | Lycoris radiata (L´ Her ) Herb Diploid Anhui |
|
| 点击此处可从《中国科学院研究生院学报》浏览原始摘要信息 |
| 点击此处可从《中国科学院研究生院学报》下载免费的PDF全文 |
