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使用基因组选择来纠正基因繁殖中的血统错误.

Daniel Mertten1,2, Catherine M McKenzie3, Susan Thomson4

  • 1The New Zealand Institute for Plant and Food Research Limited (PFR), Auckland, 1142 New Zealand.

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概括

遗传错误会降低桃选择中的育种价值准确性. 基因组选择提供了更强大的方法,通过准确捕捉遗传关系来改善预测,特别是男性基因型的特征.

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最好的线性无偏预测.品种价值 品种价值 品种价值 品种价值二元植物 (二元植物)姓氏错误是一个错误.预测的准确性 预测的准确性

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科学领域:

  • 植物育种 植物育种
  • 遗传学 是一个遗传学.
  • 园艺园艺 园艺园艺

背景情况:

  • 准确的育种价值估计对于在植物育种计划中选择优质基因型至关重要.
  • 使用血统信息的传统方法容易出现错误,影响准确性,特别是在长寿的多年葡萄树上,如果.
  • 血统错误可能导致错误识别的关系,损害遗传优点预测的可靠性.

研究的目的:

  • 评估血统错误对基维 (Actinidia spp.) 育种价值预测的影响. 繁殖. 繁殖. 这就是繁殖.
  • 探索基因组选择在存在基因谱不准确的情况下对传统基因谱方法的优势.
  • 评估基因组选择对预测女性和男性桃基因型的遗传优点的有效性.

主要方法:

  • 应用最好的线性无偏预测 (BLUP) 用于估计使用血统信息的繁殖价值.
  • 模拟了四种不同程度的变化场景在基于血统的关系矩阵中,以表示不准确的基因型关系.
  • 对葡萄藤和水果相关的定量特征进行基因组估计育种值 (GEBV) 与基于血统的育种值进行比较.

主要成果:

  • 基于血统的育种价值的预测准确性随着变化的人口结构水平的增加而显著下降.
  • 基因组选择通过保持基因型之间的实现关系,不受血统错误的影响,证明了稳健性.
  • 基于标记物的预测优于基于血统的预测,特别是对于缺乏表型数据的基因型,如男性兄弟姐妹.

结论:

  • 基因组选择在桃育种计划中提供了更准确的育种价值预测,而不是传统的基于血统的方法.
  • 基因组选择通过利用标记器遗传来捕捉真正的遗传关系,有效地减轻了血统错误的负面影响.
  • 推对基因组选择进行基因组选择,以提高基因组选择的效率和准确性,特别是男性基因型的特征.