玉米高产自交系指示性状初探

通过对40份玉米自交系的14个数量性状的主要遗传参数的分析,表明了高产自交系的特征是雄穗较长,杆高、茎粗、叶子宽长、果穗粗大、行多粒多;自交系的产量性状有较大的遗传潜力,对其进行间接选择是有效的,其中通过对穗粗、行数、粒数的综合选择来提高单穗粒重的效果最佳。

PRELIMINARY STUDY ON INDICATE TRAITS OF HIGH-YIELD MAIZE INBREDS

The exterior feature of high—yield maize inbreds Were studied and reported in this paper. Various genetic parameter Were analy- sed. Results showed. There were larger genetic potentiality of yield traits in maize inbreds. The plant of high—yeild inbreds has a longer tassel, tall and thick stems, longer and wide leaves, The ears are thicker and have more grain lines and kernels than Others, Indirect selection is effi cacious. The best Select result was obtained based on the syntbetic expression of ear thick, Line and kernel figures of maize grain.