小麦骨干亲本南大2419对衍生品种(系)HMW-GS的贡献分析
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农业部作物种质资源保护项目[NB07-2130135-(25-30)-21]


The Analysis of HMW-GS Evolution in Mentana and its Derivations
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    摘要:

    南大2419是我国小麦育种的骨干亲本之一。为了了解南大2419对衍生品种(系)在品质育种上的贡献,本文利用十二烷基硫酸钠-聚丙烯酰胺凝胶电泳技术(SDS-PAGE)对南大2419及其99个衍生品种(系)的高分子量麦谷蛋白亚基(HMW-GS)组成与演变进行了分析。结果表明,南大2419 HMW-GS组成为N/7 8/2 12,品质得分7分。衍生品种(系)的平均品质得分7.62分,高于亲本南大2419;其中N/7 8/2 12组合的品种占45.45%,且该类型在每一代都是优势组合。南大2419 HMW-GS在后代中得到了较好的遗传,在子一代到子四代中,Null、7 8、2 12亚基出现的频率均高于50%,最高可达100%。衍生品种(系)中,12个大面积推广的品种都具有与南大2419相同的丰产性高、适应性好、抗性强的优点,但HMW-GS均不是优质组合。说明骨干亲本南大2419由于本身品质上的局限,对其衍生品种在品质遗传改良上的贡献很小,其主要贡献是传递丰产性状。

    Abstract:

    Mentana is one of the backbone parents in wheat breeding of our country. In order to investigate the contribution of Mentana in quality breeding, the HMW-GS composition and evolution of Mentana and its derivations were analyzed by SDS-PAGE. The results showed that the HMW-GS composition of Mentana was N/7 8/2 12 and its quality score was 7. The average quality score of the derivations was 7.62, which was high than Mentana.45.45% was carried the same HMW-GS with Mentana in derivations, and N/7 8/2 12 was dominant HMW-GS compound in every generation. The heredity of HMW-GS for Mentana from first to forth generation was very well, the frequency of N, 7 8, and 2 12 were high than 50%, and the highest was 100%. 12 varieties extended in large areas derived from Mentana had merit of high yield, adaptability, and resistance, which were same with Mentana. The results above indicated that the backbone parent Mentana contributed little to its derivations in quality, but probably lot in stripe rust resistance and high yield potential.

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相吉山,杨欣明,李秀全,等.小麦骨干亲本南大2419对衍生品种(系)HMW-GS的贡献分析[J].植物遗传资源学报,2013,14(6):1053-1058.

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  • 收稿日期:2013-04-08
  • 最后修改日期:2013-06-06
  • 录用日期:2013-09-24
  • 在线发布日期: 2013-09-24
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