Identification of a locus for asynchronous heading in rice, Oryza sativa L.

被引：2
|
作者：
Ishimaru, K [1 ]
Kashiwagi, T [1 ]
机构：
[1] Natl Inst Agrobiol Sci, Tsukuba, Ibaraki 3058602, Japan
来源：
EUPHYTICA | 2004年 / 139卷 / 02期
关键词：
cool-weather damage; flowering; heading; QTL;
D O I：
10.1007/s10681-004-2559-7
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
We have identified a locus for asynchronous heading in rice. The length of heading period in a plant was measured as the indicator of asynchronous heading in 98 backcross inbred lines (BILs). These lines were derived using a single-seed descent method from a backcross of (japonica Nipponbare/indica Kasalath)/Nipponbare, and we used this mapping population in quantitative trait locus (QTL) analysis. We located a single QTL related to asynchronous heading (qah7) in the region of R2401-C39 on chromosome 7, and its contribution to the total variation was 0.14 (r(2)), with the positive effect due to the Kasalath allele. A near isogenic line (NILah7) that carries a Kasalath chromosomal segment corresponding to qah7 in the Nipponbare genetic background was selected and analyzed to identify a locus for asynchronous heading. The length of heading period in NILah7 was significantly longer (P < 0.001) than that in Nipponbare.
引用
收藏
页码：141 / 145
页数：5
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