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红三叶草 (Trifolium pratense L.) 干旱反应的表型特征

Tim Vleugels¹, Aamir Saleem¹, Reena Dubey¹

¹ILVO (Flanders Research Institute for Agriculture, Fisheries and Food), Plant Sciences Unit, Melle, Belgium.

Frontiers in plant science

|January 29, 2024

概括

红三叶草 (Trifolium pratense) 的干旱耐受性繁殖需要确定关键特征. 这项研究发现,干旱恢复期间的树冠覆盖面,高度和水压力指数对于选择优秀基因型至关重要.

科学领域:

农业科学农业科学
植物育种植物育种
干旱压力生理学干旱压力生理学

背景情况:

红三叶草 (Trifolium pratense) 是一种有价值的料作物,面临着越来越多的干旱挑战.
识别干旱适应性特征对于红三叶草繁殖计划至关重要.
目前用于干旱应对红三叶草的现象定型方法需要改进.

研究的目的:

评估长期干旱在田间条件下对红三叶草生长的影响.
在红三叶草基因型中确定可靠的特征来表型干旱反应.
为红三叶草增强干旱适应性的育种策略提供信息.

主要方法:

在两个生长季节中,一组多样化的395个红三叶草加入组被使用雨天避难所模拟干旱.
使用无人机安装的RGB和热传感器监测植物生长,测量树冠覆盖 (CC) 和树冠高度 (CH).
确定了作物水应激指数 (CWSI),并与手工测量对UAV衍生的测量进行了验证.

主要成果:

来自无人机的天花板高度 (CH) 测量与手动测量高度相关,证实了它们的可靠性.
干旱严重影响了CC,CH和CWSI,导致干旱期间和干旱后的生长减少.
干旱的结束和随后的20天恢复阶段被证明是区分抗干旱基因型的最佳选择.

结论:

确定了两种不同的干旱应对策略:"干旱耐受性"和"干旱恢复".
在良好的灌条件下表现良好的加入往往表现出更好的抗旱能力.
这些发现为制定有针对性的育种策略提供了基础,以改善红三叶草适应干旱压力的能力.

关键词:

在HTTPFP中使用HTTPFP.三叶草的谈话se.无人机无人机无人机是什么?树冠温度树冠温度干旱反应干旱反应现型定制现型定制现型定制

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