1999年至2020年间肯尼亚高地玉米育种计划的遗传趋势
Dickson O Ligeyo1, Edward Saina1, Bornface J Awalla1
1Department of Food Crops and Research Institute, Kenya Agricultural and Livestock Research Organization, Kitale, Kenya.
Frontiers in plant science
|July 16, 2024
概括
肯尼亚高地玉米育种计划在20多年内在谷物产量和抗病能力方面取得了显著的遗传收益. 未来的努力可以通过先进的育种技术和有利的等位基因的侵入来加强进步.
科学领域:
- 农业科学 农业科学
- 植物育种 植物育种
- 遗传学 遗传学 是一个
背景情况:
- 玉米育种计划需要对遗传趋势进行评估以优化策略.
- 肯尼亚高地玉米育种计划 (KHMP) 在开发适应的玉米品种方面有着悠久的历史.
研究的目的:
- 确定和量化1999年至2020年KHMP的遗传趋势.
- 评估过去的育种努力的有效性,并确定需要改进的领域.
主要方法:
- 从初步品种试验 (PVT) 和高级品种试验 (AVT) 分析了二十年的历史数据集.
- 混合模型分析以使用最好的线性公正估计计算遗传收益.
主要成果:
- 谷物产量显著的积极遗传收益 (PVT中88公斤-1年-1年,AVT中26公斤-1年-1年).
- 减少根部的理想遗传收益 (在AVT中为-1.65%-1年).
- 改善了对土耳其叶虫害 (PVT中-1.19%,AVT中-0.27%) 和灰叶斑 (-0.81%在AVT中) 的抵抗力.
结论:
- 肯尼亚高原农业农业研究中心 (KHMP) 在为肯尼亚高地开发适应的玉米杂交品种方面取得了很好的进展.
- 通过有利的等位基因的侵入和先进的育种技术,如标记器辅助选择和基因组选择,有机会进一步增强遗传收益.
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