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小麦体细胞杂种渐渗系F_6代的高分子量谷蛋白亚基组成与位点变异 被引量:3

Composition and Variation of High Molecular Weight Glutenin Subunits in Wheat F_6 Introgression Lines
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摘要 为了发掘新的小麦高分子量谷蛋白亚基用于品质育种,测定了小麦/长穗偃麦草体细胞杂种F6代共322个株系的高分子量谷蛋白亚基(HMW-GS)组成,并进行了品质评分。结果表明,体细胞杂种株系在Glu-A1、Glu-B1和Glu-D1位点上的遗传变异率分别为0.52、0.58和0.46,一共出现27种不同的亚基组合形式,其中Null、7+9、2+12(同亲本小麦济南177)出现的频率最高,而2*、7+8+9、2+5+12出现的频率最低;5+12出现的频率约为33.5%;在与优质可能相关的亚基组合当中,13+16出现的频率约为31.1%。由于5+12尚未有品质评分,因此部分株系无法给出分数。本研究表明,通过体细胞杂交可以产生大量的高分子量谷蛋白亚基/组合变异,这有助于今后小麦品质育种工作。 In order to discover new HMW-GS with high flour quality for wheat breeding,high molecular weight glutenin subunit(HMW-GS) patterns of 382 somatic hybrid introgression lines between Triticum aestivum c.v.JN 177 /Agropyron elongatum were analyzed,together with their quality scores according to Payne s Glu-1 quality assignments.The genetic index for Glu-A1,Glu-B1 and Glu-D1 loci were 0.52,0.58 and 0.46,respectively.These hybrid lines could be divided into 27 groups based on allelic composition,in which Null,7+...
出处 《麦类作物学报》 CAS CSCD 北大核心 2010年第5期926-929,共4页 Journal of Triticeae Crops
基金 国家"863"项目(2006AA10Z173)
关键词 小麦 长穗偃麦草 体细胞杂种 高分子量麦谷蛋白亚基/组合 遗传变异率 Triticum aestivum Agropyron elongatum Somatic hybrid line High molecular weight glutenin subunit/composition Genetic index
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参考文献16

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