QTL Preliminary Mapping of Agronomic and Yield Traits in Sorghum x Sudan grass Progeny Population
In order to further explore the genetic rule of grain and stalk yield of sorghum,grain sorghum Xin-liang 52 and Sudan grass TS 185 were hybridized as parents to obtain F2 and F2∶3 populations,115 pairs of polymor-phic primers were used to construct the genetic linkage map of 430 F2 progeny populations by interval mapping.A total of 86 QTLs were detected for 12 agronomic traits,including number of tillers,number of blades,stem diame-ter,panicle length,plant height,stem fresh weight,whole plant fresh weight,shelling rate,panicle weigh,thou-sand kernels weight,grain weight per panicle and grain number per panicle,with LOD value as the threshold val-ue.The QTL of stem fresh weight was located between sam17164-sam15397 on chromosome 1.On chromosome 2,the QTL of number of tillers was located in Xcup64-Xcup26 region,leaf was located in Xtxp019-sam01138 re-gion,and stem fresh weight was located in Xcup26-Xtxp080 region.Panicle length QTL was located between sam44791 and sam33751 on chromosome 3.The QTL of shelling rate was located at sam39622-sam43980 on chro-mosome 7.The QTL for whole plant fresh weight located in sam10491-sam17740 on chromosome 8 and the QTL for number of tillers located in sam710901b-sam59778 on chromosome 10 were all newly detected loci.
万方数据
维普
