Genetic diversity of rice cultivars (Oryza sativa L.) in China and the temporal trends in recent fifty years

被引：35

作者：

Qi Yongwen

Zhang Dongling

Zhang Hongliang

Wang Meixing

Sun Junli

Wei Xinghua

Qiu Zongen

Tang Shengxiang

Cao Yongsheng

Wang Xiangkun

Li Zichao ^{[1
]}

机构：

[1] China Agr Univ Beijing, Key Lab Crop Genom, Beijing 100094, Peoples R China

[2] China Agr Univ Beijing, Genet Improvement Minist, Beijing 100094, Peoples R China

[3] China Agr Univ Beijing, Beijing Key Lab Crop Genet Improvement, Beijing 100094, Peoples R China

[4] China Natl Rice Res Inst, Hangzhou 310006, Peoples R China

[5] Chinese Acad Agr Sci, Inst Crop Sci, Beijing 100081, Peoples R China

来源：

CHINESE SCIENCE BULLETIN | 2006年 / 51卷 / 06期

关键词：

rice (Oryza sativa L.); cultivars; genetic diversity; microsatellite; phenotypic traits;

D O I：

10.1007/s11434-006-0681-8

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

To understand geographical distribution of the genetic diversity of rice cultivars (Oryza sativa L.) and its trends in recent fifty years in China, 453 accessions were analyzed by 36 microsatellites loci and 42 phenotypic traits. Results revealed that the genetic diversity by SSRs is highly consistent with that by phenotypic traits and the genetic diversity of indica cultivars was higher than that of japonica cultivars; the genetic diversity of cultivars declined from 1950s to 1980s and then increased greatly; among the six rice ecological zones (REZs), genetic diversity of REZII was the highest and those of REZV and REZVI were the lowest at both DNA and phenotypic level. Jiangsu and Jiangxi provinces in the middle and lower reaches of Yangtze River and Sichuan province in southwest of China were the areas wit the highest genetic diversity. Breeders in REZV which is an important japonica rice area but with very low genetic diversity should explore more gene resources to widen the genetic backgrounds of cultivars.

引用

页码：681 / 688

页数：8

共 29 条

[1] Temporal trends in the diversity of UK wheat [J].