陆海三系彩色杂交棉的产量性状和纤维品质性状的遗传与配合力分析

Analysis on heredity of yield and fiber quality characters in sealand and uplan colored hybrid cotton

对7个新转育成的彩色棉雄性不育系和3个海岛棉恢复系采用7×3不完全双列杂交设计,进行产量性状和纤维品质性状的配合力分析。结果表明:恢复系(P1)4R的皮棉产量、衣分的一般配合力都较高,适合配制高产杂交组合;811R的25%跨长、比强度性状一般配合力较高,适合配制纤维品质优良的杂交组合。不育系(P2)6H、19H和20H的各性状一般配合力表现都较其它不育系为高,由它们配制的杂交组合特殊配合力也都相应较高。

The combining ability of yield and quality characters of seven male-sterile colored cotton varieties newly transferred and three restoring lines of sealand cotton were tested by 7×3 model of incomplete dilled cross. The results showed that the restoring line 4R,with higher general combining ability (g.c.a.) of lint yield and lint percentage, was adaptable to make hybrid cotton crosses with high yield ;811R,with higher g.c.a of span length and strength ,was adaptable to make hybrid crosses with fine fiber quality .The g.c.a of all characters of the sterile lines 6H、19H、20H were higher than the others ,which had higher special combining ability in hybrid crosses.