回到未来的干旱耐受性
Luis M Guadarrama-Escobar1, James Hunt1, Allison Gurung1
1School of Agriculture, Food and Ecosystem Sciences (SAFES), University of Melbourne, Melbourne, Vic., 3010, Australia.
The New phytologist
|March 2, 2024
概括
野生作物的亲属提供未开发的干旱耐受性基因. 一种新的高通量成像方法,使用基于图像的透气效率 (iTE) 指数,有助于为全球农业选择耐旱作物.
科学领域:
- 农业科学 农业科学
- 植物遗传学 植物遗传学
- 适应气候变化 适应气候变化
背景情况:
- 全球农业面临着越来越大的压力,需要用有限的资源生产更多的食物.
- 由于气候变化而加剧的干旱是农业的主要制约因素,造成重大经济损失.
- 野生作物的亲属 (如小麦,大麦) 拥有宝贵的耐旱基因,但由于选择挑战,它们的利用不足.
研究的目的:
- 提出一种新的策略,用于评估和选择农作物的干旱耐受性,使用高通量光谱成像.
- 探索持续碳固定在干旱压力下的重要性.
- 通过合并高通量表型和de novo化来开发耐旱的预繁殖材料.
主要方法:
- 使用基于高通量光谱图像的多特征选择标准.
- 使用超光谱和热成像开发基于图像的透气效率 (iTE) 指数.
- 整合iTE与其他与干旱相关的变量进行选择.
主要成果:
- 拟议的iTE指数与其他变量相结合,有助于识别具有多种干旱耐受机制的加入.
- 高通量表型化和de novo化可以合并用于有效的预育种.
- 该战略解决了管理不良特征和选择遗传干旱耐受性的挑战.
结论:
- 一个新的高通量成像策略,结合基于图像的透气效率 (iTE) 指数,可以有效地识别耐旱作物线.
- 这种方法有助于开发具有增强干旱抵抗力的预繁殖材料.
- 利用野生作物亲属和先进的表型化为未来在干旱压力下改善作物提供了一个有希望的途径.
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