玉米(Zea mays L.)×大刍草(Zea diploperennis L.)远缘杂交选育玉米自交系的研究  

Inbred Selection from Distant Hybridization of Maize(Zea mays L. ) × Teosinte (Zea diploperennis L. )

作　　者：周洪生[1] 邓迎海[1] 李竞雄[1] 

机构地区：[1]中国农业科学院作物育种栽培研究所,北京100081

出　　处：《作物学报》1997年第3期333-337,共5页Acta Agronomica Sinica

摘　　要：为了丰富玉米遗传变异,从1990年起,我们进行了玉米(Zea mays L.)和多年生二倍体大刍草(Zea diploperennis L.)远缘杂交的研究。经过5年8个世代的杂交、回交和自交选择,目前已获得抗逆性、抗病虫能力较强,农艺性状优良的玉米自交系14个。在测配1000个杂交组合中,所选系表现出较高的一般配合力和特殊配合力。实践证明,这是一条导入外缘种质、拓宽玉米遗传基础,进一步提高杂交种增产潜力的途径之一。Maize germplasm pool in China was narrow. In order to introduce new genetic variability, we conducted the distant hybridization of maize×teosinte(Zea diploperennis L. )in 1990. Now fourteen inbred lines which are resistant to diseases, insects and environmental stress have been obtained through eight generation selfing and selection. Top crossing of these fourteen lines with normal testers produced 1000 hybrids which showed strong heterosis. This indicate that maize×teosinte(Zea diploperennis)is one of the effective ways to widen germplasm pool of maize and to overcome the stasis situation of maize production in China.

关 键 词：玉米 大刍草 远缘杂交 自交系 种质 

分 类 号：S513.035.1[农业科学—作物学]