对玉米早代系选育几个性状的探讨

STUDIES ON SOME CHARACTERS OF MAIZE IN DEVELOPMENT OF INBRED LINES

摘要:

本文利用四个基本材料,探讨了玉米果穗长短、粒行多少、穗位高低、植株绿叶率四对性状的早代系表现。结果表明,选系的S₀单株是决定选出优良形态性状的关键。S₁、S₂变异幅度较大,有利于选拔。从玉米基本群体内的果穗长度、粒行数、穗位高度、绿叶率等可以预见到育成自交系的形态性状。

Abstract:

Four essential materials of maize were used to study proformances of early progenies in four characters, ear length, number of kernal rows, ear height and rate of green leaves. The results were given as fellows: So individual plant was critical for developing new inbred line with good traits. Large variations in S₁ and S₂ generations were useful for selection.
Morphological characters of inbred line to be developed can be forecasted by characters of ear length, number of kernal rows, ear height and rate of green leaves in the basic population.