The CV% of morphological traits in DH lines were significantly smaller than that of R1L, which confirmed that the DH lines were identical.

• 对DH系、重组自交系和亲本农艺性状进行综合比较分析,DH系间各性状存在较大的遗传变异,株高、穗位高、行粒数等农艺性状符合正态分布,穗长呈多峰分布。