水稻叶挺长发育动态的QTL分析  

QTL Mapping for Developmental Behaviour of Leaf Sheath Height in Rice

作　　者：何慈信[1] 朱军[1] 严菊强[1] Mebrouk Benmoussa 吴平[2] 

机构地区：[1]浙江大学农学系,浙江杭州310029 [2]浙江大学生物科学系,浙江杭州310029

出　　处：《中国水稻科学》2000年第4期193-198,共6页Chinese Journal of Rice Science

基　　金：国家自然科学基金重大项目! (3989335 0 )

摘　　要：采用条件复合区间作图法 ,分析籼型品种 IR6 4和粳型品种 Azucena为亲本的 DH群体 ,对不同时期的叶挺伸长动态进行了 QTL定位。检测到各时期影响叶挺长的非条件 QTL s。随着叶挺的伸长 ,解释叶挺表型变异的所有非条件 QTL s贡献率逐渐增加 ,到测定末期 QTL的贡献率达到 90 .0 %。条件 QTL分析表明 ,H ls1- 2、H ls 3- 3、H ls 2和 H ls4等位点的基因表达 ,在 8月 18日至 9月 7日和 9月 7日至 9月 17日两个时段较为活跃 ,与The DH population, derived from a cross between an indica variety IR64 and a japonica variety Azucena was analyzed, by using conditional composite interval mapping method, to identify QTLs for the developmental behaviour of leaf sheath height. The unconditional QTLs were detected affecting time dependent measures. The contribution to phenotypic variation explained by unconditional QTL is increasing gradually and reaches the peak of 90% at the final stage. Conditional QTL analysis showed that the gene expression at the loci Hls 1 2, Hls 3 3, Hls 2 and Hls 4 was quite active at the intervals from 18 August to 7 September and from 7 September to 17 September. This is unanimous to the date of elongating and heading of DH population.

关 键 词：发育动态 数量遗传 基因座位 水稻叶挺长 

分 类 号：S511.032[农业科学—作物学]