摘要
本文研究了基础群体和子群体重组次数对玉米群体主要经济性状改良效果的影响,结果表明:对籽粒产量和多数产量构成性状的改良,经4次重组的基础群体的选择进展约为经2次重组的基础群体的选择进展的2倍;而形成子群体时的重组次数,则对多数经济性状改良的影响无明显差异。
This paper presents a study on the influence of recombination times for the basic and the daughter populations on the improvement effects of major economic traits in a maize population. The results indicated that the improvement effects of one cycle selection in the basic population recombined for four times is equal to that of two cycles of selection in the basic population recombined for two times. The selected gain for the former basic population is about twice of the latter one. However, the influence of recombination times on improvement effects of most economic traits is not significantly different when the daughter population is produced.
出处
《四川农业大学学报》
CSCD
1990年第1期11-17,共7页
Journal of Sichuan Agricultural University
关键词
玉米
重组
群体
轮向选择
CORN
RECOMBINATION
POPULATION
RECURRENT SELECTION.
