| 硬胚乳高赖氨酸玉米选育方法的研究 |
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| 引用本文： | 王河成,段运平. 硬胚乳高赖氨酸玉米选育方法的研究[J]. 华北农学报, 1987, 0(4) |
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| 作者姓名： | 王河成 段运平 |
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| 作者单位： | 山西省农业科学院作物遗传研究所 太原(王河成),山西省农业科学院作物遗传研究所 太原(段运平) |
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| 摘 要： | 以O_2基因为遗传背景的高级氨酸玉米(简称O_2玉米)比普通玉米同型种一般产量低7—15%,这是粉质胚乳导致子粒容重降低的结果.育种上解决的途径是利用硬胚乳修饰基因选育子粒容重较高的硬胚乳或半硬胚乳O_2自交系.不同类型玉米携带的硬胚乳修饰基因贫富悬殊很大,只有筛选利用较丰富的亲本材料,通过自交或自交与姊妹交相结合的二环系选育方法,以早代子粒出现“角帽”和“角圈’为选择目标,才能有效地育成硬胚乳或半硬胚乳O_2玉米交系.
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| 关 键 词： | 硬胚乳 O_2玉米 育种 |
A STUDY ON METHODS OF SELECTION AND BREEDING OF HARD ENDOSPERM AND HIGH LYSINE CORN (MAIZE) |
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| Wang Hecheng,Duan Yunping. A STUDY ON METHODS OF SELECTION AND BREEDING OF HARD ENDOSPERM AND HIGH LYSINE CORN (MAIZE)[J]. Acta Agriculturae Boreali-Sinica, 1987, 0(4) |
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| Authors: | Wang Hecheng Duan Yunping |
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| Abstract: | O2 ( Opaque No. 2 ) corn generally yields 7-15% less than common corn of the same type, due to reduced kernel volume weight caused by starch endosperm. The way to solve this problem in breeding is to use the hard endosperm modifier( gene) and to select hard or semi-hard O2 inbred lines with higher kernel volume weight. Since different types of corn carry different amount of hard endosperm modifiers, only by screen -ing and utilizing parent materials rich in hard endosperm modifiers, through the breeding method of self-cross or a combination of selfing and sib- mating with the selection objective of showing" corny cap" and "corny ring", can hard endosperm or semi-hard endosperm O2 corn inbred lines be effectively bred. |
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| Keywords: | Hard endosperm O_2 corn Breeding |
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