摘要
本研究完成了玉米群体中综３号的５轮混合选择。结果表明，中综３号群体本身产量平均每轮增益２．１％，群体测交种产量平均每轮增益１．７％。群体产量一般配合力明显提高，这表明混合选择对玉米群体改良是有效的。群体其它农艺性状随着选择轮数的进展，发生了相应变化，穗长、行粒数、千粒重、穗位高均有提高，穗粗、穗行数、雄穗分枝数下降，脱粒率、株高、雄穗长度、生育期变化不明显。
Five cycles of mass selection were completed in a maize population Zhong Zong No.3.The results showed that the yield gains per cycle were 2.1%and 1.7%in popula- tion itself and testcross involving populations and texters respectively.and that the general combining ability of population in yield increased significantly.This suggested that mass selection was effective for population improvement.Some agronomic traits changed with selection cycles.The ear length,kernel number per row,1000一kernel weight and ear height increased,and the ear diameter,kernel row number,branch number of tassel de-creased,the shelling percentage,plant height,length of tassel,time of growing period seemed to have no apparent changes.
出处
《河南农业大学学报》
CAS
CSCD
1994年第4期379-383,共5页
Journal of Henan Agricultural University
关键词
玉米
群体改良
混合选择
配合力
maize
mass selection
population improvement
combining ability
