寒地粳稻二次枝梗数和结实率遗传分析  

Genetic analysis and QTL identification of secondary branch number and ripening rate traits of japonica rice in cold

作　　者：邹德堂[1] 李姣[1] 

机构地区：[1]东北农业大学农学院,哈尔滨150030

出　　处：《东北农业大学学报》2014年第4期18-24,共7页Journal of Northeast Agricultural University

基　　金："十二五"农村领域国家科技计划项目(2011BAD35B02-01);国家科技支撑项目(2011BAD16B11)

摘　　要：运用植物数量性状主基因＋多基因混合遗传模型方法，分析黑龙江地区粳稻品种东农422和空育131杂交后代F1～F4世代二次枝梗数和结实率性状的遗传效应，构建基于SSR标记的遗传连锁图谱，对上述性状进行QTL．4}析。结果表明，二次枝梗数和结实率均受两对主基因＋多基因共同控制，均以主基因遗传为主；在两个世代中均检测到控制上述性状QTL各2个，遗传分析结果与QTL定位结果基本一致。F1-F4 generations derived from a cross between japonica variety Dongnong422 and Kongyu131 with high yield and quality in Northeast of China were used for genetic effect analysis on secondary branch number（SBN） and dpening rate （RR） traits under main gene plus polygene mixed genetic model of plant quantitative traits. Furthermore, SSR markers based genetic linkage map were constructed to identify QTLs underlying the above traits. The results indicated that SBN and RR were controlled by two major genes plus polygene and E-1-0 and E-1-2 model were the optimum genetic model for SBN and RR, respectively. The hedtability of major gene was much greater than that of the rate of the polygene. Two QTLs associated with SBN and RR were detected in two generations, respectively. The results of genetic analysis and QTL identification were basically identical.

关 键 词：寒地粳稻 二次枝梗数 结实率 遗传规律 QTL定位 

分 类 号：S511.22[农业科学—作物学]