能自别纯杂的玉米单交种

来源 :陕西农业科学 | 被引量 : 0次 | 上传用户:vcnewer
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河南省商丘地区农科所经过近10年努力,培育出苗期具有明显标记性状且配合力和丰产性均佳的自交系27-263,该自交系苗芽鞘为绿色,但用27-263X黄早4配制的单交种豫玉1号杂种苗的芽鞘为紫红色,生育期90天左右,产量略高于丹玉13和掖单2号,籽粒黄色,商品品质好。种子部门只需做简单发 After nearly 10 years of hard work in Shangqiu Prefecture, Henan Province, the inbred line 27-263 with obvious marked characters at the seedling stage and good combining ability and high yield was cultivated. The sprout sheath was green, but with 27- 263X Huangzao 4 hybrid seedlings Yuyu 1 hybrid seedlings buds purple, growth period of about 90 days, the yield slightly higher than the Dan Yu 13 and Yedan 2, grain yellow, good quality of goods. The seed department just needs to make simple hair
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玉米作为重要的粮食和饲料作物,如何最大程度的提高玉米产量是玉米育种的主要目标。为实现玉米高产,育种家把创制耐密型玉米新品种作为主要的育种方向,强调株型育种是提高群体光能利用及协调群体与个体之间矛盾的重要性。为此,本研究利用紧凑型玉米自交系豫82和松散型自交系豫自87-1组配构建的F2:3家系群体为材料,通过对株型性状及产量相关性状在多个环境下进行表型鉴定,分析其遗传特点,并利用已构建的遗传图谱对各