摘要
利用一个 DH群体研究了控制抽穗期的 QTL ,实验分别在杭州 (HZ)和海南 (HN)两地进行 ,抽穗期分别在 4个和 3个不同发育阶段调查 .结果表明 :在 2个环境和 7个发育阶段中共检测到 8个QTL,分别分布在第 1,6,8,10 ,12号染色体上 .其中 ,2个 QTL,q HD- 1- 1和 q HD- 12能在 2个环境中检测到 ,其它只能在 1个环境中检测到 .在 HN中一个 QTL q HD- 10 - 1主要在发芽后 75～ 85 d检测到其效应 ,它可解释 19.6%的变异 .在 HZ一个主效 QTL q HD- 8- 1在发芽后 80～ 90 d时检测到效应 .其它的QTL只在某一阶段表达 .最后讨论了抽穗期
Heading date (HD) is a major determinant of the regional and seasonal adaptation of rice varieties. In order to elucidate the quantitative trait loci (QTL) for HD in the process of rice development, a doubled haploid (DH) population was employed to map QTLs controlling HD at different heading stages in two locations, Hainan (HN) and Hangzhou (HZ) in China. The results indicated that a total of 8 QTL were identified at two environments and seven stages which were located on chromosomes 1, 6, 8, 10 and 12. Two QTL, qHD 1 1 and qHD 12 could be detected at both environments, the others were only detected at one environment. One QTL in HN, qHD 10 1, exerted its effect during 75 85 DAG (days after germination) and could explain 19.6% of the total variation. A major QTL, qHD 8 1 in HZ, showed its effect during 80 90 DAG. The other QTL were only detected in one stage, such as qHD 6 and qHD 10 2 were both specific for 80 DAG in HN, while qHD 1 2 and qHD 8 2 were specific for 85 and 80 DAG in HZ, respectively. Based on the QTL mapping results, we proposed a QTL effect timing model for the HD controlling QTLs.
出处
《浙江大学学报（农业与生命科学版）》
CAS
CSCD
北大核心
2002年第1期27-32,共6页
Journal of Zhejiang University:Agriculture and Life Sciences
