在普通豆 (Phaseolus vulgaris L.) 中使用参数和非参数模型进行基因组选择实施途径的模拟
Isabella Chiaravallotti1, Valerio Hoyos-Villegas1,2
1Department of Plant Science, McGill University, Montreal, Canada.
在普通豆繁殖中,基因组选择 (GS) 可以通过早期代亲子选择来加速种子产量增长. 非参数模型显示出平衡遗传多样性和收益的前景,尽管需要进一步的研究才能实现一致的性能.
科学领域:
- 植物育种 植物育种
- 遗传学 是一个遗传学.
- 农业科学 农业科学
背景情况:
- 基因组选择 (GS) 是一种强大的作物改进工具.
- 在育种计划中优化GS的实施对于最大化遗传收益至关重要.
- 常见豆 (Phaseolus vulgaris L.) 育种计划可以从先进的基因组策略中受益.
研究的目的:
- 模拟和评估不同的基因组选择 (GS) 实施策略,用于常见豆种植.
- 了解模型选择,培训数据和选择时间对育种计划结果的影响.
- 评估参数与非参数模型在预测育种价值和实现遗传收益方面的潜力.
主要方法:
- 模拟了24个基因组选择 (GS) 途径用于普通豆的育种.
- 多样化的培训模型生成,父母选择生成和培训数据收集生成.
- 对比参数 (回归) 和非参数 (人工神经网络) 模型来估计繁殖值.
主要成果:
- 与后代选择相比,早期代父选择 (快速周期GS) 在三个周期中带来了更高的收益.
- 参数模型提供了一致的预测准确性,而非参数模型显示了可变的性能.
- 非参数模型表明,等位基因多样性和遗传收益之间的平衡更好,这对于持续改善至关重要.
结论:
- 早期代亲子选择是有效的增加普通豆种子产量.
- 非参数模型显示了常见豆种植的潜力,但需要进一步调查以稳定性能.
- 持续的遗传收益取决于遗传变异的更新,强调了多样化的培训数据和模型选择的重要性.
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