自交系丹340及其衍生系的育成对中国玉米生产的影响

Effects of Inbred Line Dan340 and Its Derivative Lines on Maize Production in China

丹340是以旅9(白骨)为母本,有稃玉米为父本组配后经钴60γ射线照射选育而成的具有抗病、抗倒、配合力高、适应性广等特点的优良玉米自交系,是旅大红骨种群的骨干自交系之一。直接组配的优良杂交组合40多个,累计推广面积在66.7万hm2以上的杂交种有掖单13、丹玉15、吉单159、铁单10等。以丹340为种资基础选育出大量的衍生系,在生产上大面积应用其组配的组合有丹玉39号、丹科2151、东单7、西玉3、铁单12、丹玉26,良玉88等。

Dan 340 was an excellent backbone inbred line of Luda Red Cob Group with lots of good characters such as disease resistance,lodging resistance,high combining ability,wide adaptability and so on.It was bred through irradiation of Cobalt 60 from the progeny derived from Lv 9（female parent） and cover maize（male parent）.More than 40 hybridized combinations were bred by using it as parent.The cumulative popularization area of Yedan13,Danyu15,Jidan159 and Tiedan10 were all over 0.667 million ha.A lot of derivative lines,were bred by using Dan340 as germplasm.Those inbred lines had bred many varieties,for example Danyu39,Danke2151,Dongdan7,Xiyu3,Tiedan12,Danyu26 and Liangyu88.Those varieties had applied in large area.