摘要
本文研究了全同胞轮回选择和混合选择对玉米群体主要经济性状配合力的改良效果,结果表明:两稚选择方法对群体主要经济性状的配合力都有一定的改良效果,并以对一般配合力的改良效果较大;而且全同胞轮回选择的改良效果明显优于混合选择;经4次重组的基础群体,多数经济性状一般配合力的改良进展明显大于经2次重组的基础群体。
Improved effects of full-sib recurrent selection and mass selection on combining ability of major economic traits in a maize population were studied, using an incomplete diallel design. The results indicated that the two selection methods are effective for improving combining ability of major economic traits of the maize population, and that effects of improvement on general combining ability are greater than on specific combining ability. Improved effects of full-sib recurrent selection are significantly superior to mass selection. The improvement of general combining ability of the basic population recombined for four times is greater than that for two times. Two preliminary conclusions were obtained: (1), the basic population should be fully recombined at the beginning of .improvement, and (2), a composite program of combining full-sib recurrent selection with half-sib recurrent selection, etc. should be used for a further improvement of the studied population.
出处
《四川农业大学学报》
CSCD
1990年第2期94-100,共7页
Journal of Sichuan Agricultural University
关键词
玉米
群体
配合力
轮回选择
选择
CORN
ABILITY
POPULATION
RECURRENT SELECTION
SELECTION.
