让基因型变异变得可见:在苏格兰松树苗中超谱表型化
Jan Stejskal1, Jaroslav Čepl1, Eva Neuwirthová1,2
1Department of Genetics and Physiology of Forest Trees, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic.
Plant phenomics (Washington, D.C.)
|November 29, 2023
概括
对苏格兰松苗的高光谱成像可以使用非破坏性方法准确识别种群. 这种高通量表型化方法有助于选择具有优越适应潜力的树木用于森林育种和苗圃实践.
科学领域:
- 植物科学 植物科学
- 遥感 遥感 遥感 遥感
- 森林遗传学 森林遗传学
背景情况:
- 超光谱反射度通过叶子的功能特征揭示了植物的生理状态.
- 使用超光谱数据的高通量表型化可以帮助选择具有适应潜力的树木.
研究的目的:
- 评估两种非破坏性的超光谱反射力方法,用于表型苏格兰松 (Pinus sylvestris) 苗木.
- 评估从不同当地人口中区分低地和高地生态型的潜力.
主要方法:
- 对比了1788棵苏格兰松苗的叶子水平和近距离/天花板高光谱反射度测量 (350-2500nm).
- 使用带有接触探针的光谱辐射计用于叶子测量和光纤用于树冠测量.
- 应用随机森林和支持向量机算法用于人口预测.
主要成果:
- 两种光谱数据集都显示了整个光谱范围内的苏格兰松树种群之间的显著差异.
- 靠近树冠的测量在预测三个不同的苏格兰松树种群时达到高达83%的准确性.
- 叶子水平的测量也提供了有价值的表型数据.
结论:
- 叶子层面和近接/树冠高光谱表型对苏格兰松树来说都是可行的.
- 这些方法可以有效地区分种苗种群中的表型和潜在的遗传变异.
- 这种方法支持树木育种和苗圃选择以适应环境.
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