摘要
利用6个籼型水稻生态型的72份亲本为材料,对主要农艺性状进行主成分分析,以欧氏距离为指标,研究了各生态型间遗传差异。结果表明,云贵籼和华南籼之间的遗传距离最大,为6.345 1,韩国籼与IRRI籼之间的遗传距离最小,只有2.914 1。由于云贵籼和华南籼与其它生态型之间的遗传距离均较大,故初步将其确定为籼型水稻优势生态型。
The principal component analysis was conducted on 10 major agronomical traits of 72 indica rice varieties from 6 ecotypes （Taihu indica, IRRI indica, Yungui indica, South China indica, Korea indica and HuaZhong indica）, and the genetic diversity among the ecotypes was analyzed on the basis of their principal component values. The results showed that the genetic distance between Yungui indica and South China indica was the biggest （6. 345 1 ） and that between Korea indica and IRRI indica the smallest （2.914 1） among all 15 genetic distances of 6 ecotypes. Because the genetic distances of Yungui indica and South China indica were bigger than those of all other ecotypes, they were grouped into the heterotic ecotypes of indica rice.
出处
《杂交水稻》
CSCD
北大核心
2006年第2期60-63,共4页
Hybrid Rice
基金
江西省自然科学基金(0430062)
江西省科技攻关项目(200210100201)
关键词
籼稻
遗传距离
优势生态型
主成分分析
indica rice
genetic distance
heterotic ecotype
principal component analysis
