在未来的气候条件下,基于等位基的建模可以预测葡萄藤杂交的现象阶段
Elsa Chedid1, Vincent Dumas2, Komlan Avia2
1UMR1131 SVQV, INRAE, University of Strasbourg, Colmar, France. elsa.chedid@inrae.fr.
概括
葡萄藤育种计划可以预测新的抗病品种如何适应气候变化. 一个晚期成熟的基因型显示出很好的适应潜力到2060年,为未来的作物发展提供了洞察力.
科学领域:
- 植物遗传学和育种.
- 适应气候变化 适应气候变化
- 生态生理学 生态生理学
背景情况:
- 现代葡萄藤 (Vitis vinifera L.) 育种的重点是抗病和适应气候变化的能力.
- 气候变化影响葡萄藤表态和果成分,挑战品种选择.
- 预测基因型适应未来气候对于可持续的葡萄种植至关重要.
研究的目的:
- 评估葡萄藤基因型从育种计划适应未来气候条件的适应性.
- 在关键的现象学时期使用生态生理学模型检查遗传变异性.
- 在气候变化场景下预测早期和晚期复合基因型的表现.
主要方法:
- 利用基于热量要求的生态生理模型来评估现象学阶段.
- 使用高密度的遗传信息来识别现象学时期的定量特征位置 (QTL).
- 构建虚拟早期和晚期复合基因型,并在IPCC RCP 8.5场景下模拟它们的性能.
主要成果:
- 确定了与三个关键葡萄树现象学时期相关的超过18个QTL.
- 在预测条件下,早期的复合基因型在查多内酒上表现出有限的优势.
- 晚期复合基因型表明适合适应未来的气候场景,至少到2060年.
结论:
- 将遗传值集成到生态生理学模型中,可以在未来条件下预测代基因对现象学的影响.
- 开发的方法有助于预测气候场景中葡萄藤现象学阶段的等位基特异性优势.
- 这项研究支持通过明智的育种策略开发适应气候变化的葡萄品种.
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