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文摘
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为了深入了解眷小麦新创种质陇矮1号的矮秆性遗传规律，2000～200l午对“陇矮1号”的矮秆遗传特性进行了较为系统的研究。从“陇矮1号”分别与三个高秆亲本“老芒麦”、“和尚头”和“高原602”的杂种F-1代株高表现可知，其F3代株高介于高亲值与中亲值之间，且D为负值，说明“陇矮1号”的矮秆特性受隐性矮秆基因控制。“陇矮1号”与“老芒麦”、“和尚头”和“高原602”的F-2代株高分离表明，“陇矮1号”的矮秆特性受2对或2对以上隐性基因控制。此外，超亲分离表明“陇矮1号”的矮秆特性还受到一些微效基因的影响。对各组合回交世代BC-1和BC-2株高分离结果进行X’测验，BCl的矮秆株数与半矮秆株数之比为3：1，而BC。的半矮秆株数与高秆株数之比为1：3。因此，推断“陇矮I号”的矮秆特性受2对主效隐性矮秆基因控制。 |
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其他语种文摘
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In order to study the genetic rule of new wheat germplasm Long'ai 1 which was created by Gansu Academy of Agricultural Science, Long'ai 1 was hybridzed with taller parent Laomangmai, Heshangtou and Plateau 602, respectively. The results showed that the plant height of F-I generation were between the average of parents and the taller parent, and all the D values were negative. It indicated that the plant height of Long'ai 1 was controlled by recessive genes. The segration proportion of F2 generation plant height showed that Long'ai 1 had at lest two recessive genes for plant height. It could also be found from the F-2 that Long'ai 1 had some minor genes affecting its plant height. The segregation of plant height in BCi and BC-2 showed that Long'ai 1 had two recessive dwarf genes. |
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来源
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麦类作物学报
,2003,23(2):11-13 【扩展库】
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关键词
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春小麦
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新种质
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矮秆特性
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株高分级标准
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隐性矮秆基因
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地址
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1.
甘肃省农业科学院粮食作物研究所, 兰州, 730070
2.
国家小麦工程技术研究中心, 国家小麦工程技术研究中心, 河南, 郑州, 450002
3.
中国科学院西北高原生物研究所, 青海, 西宁, 810001
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1009-1041 |
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学科
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农作物 |
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基金
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甘肃省自然科学基金
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文献收藏号
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CSCD:1339789
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