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首页> 美国卫生研究院文献>Scientific Reports >Dynamic plant height QTL revealed in maize through remote sensing phenotyping using a high-throughput unmanned aerial vehicle (UAV)
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Dynamic plant height QTL revealed in maize through remote sensing phenotyping using a high-throughput unmanned aerial vehicle (UAV)

机译：通过使用高通量无人机（UAV）进行的遥感表型分析揭示了玉米的动态株高QTL

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摘要

Plant height (PH) is a key factor in maize (Zea mays L.) yield, biomass, and plant architecture. We investigated the PH of diverse maize inbred lines (117 temperate lines, 135 tropical lines) at four growth stages using unmanned aerial vehicle high-throughput phenotypic platforms (UAV-HTPPs). We extracted PH data using an automated pipeline based on crop surface models and orthomosaic model. The correlation between UAV and manually measured PH data reached 0.95. Under temperate field conditions, temperate maize lines grew faster than tropical maize lines at early growth stages, but tropical lines grew faster at later growth stages and ultimately became taller than temperate lines. A genome-wide association study identified 68 unique quantitative trait loci (QTLs) for seven PH-related traits, and 35% of the QTLs coincided with those previously reported to control PH. Generally, different QTLs controlled PH at different growth stages, but eight QTLs simultaneously controlled PH and growth rate at multiple growth stages. Based on gene annotations and expression profiles, we identified candidate genes controlling PH. The PH data collected by the UAV-HTPPs were credible and the genetic mapping power was high. Therefore, UAV-HTPPs have great potential for use in studies on PH.
机译：株高（PH）是玉米（Zea mays L.）产量，生物量和植物结构的关键因素。我们使用无人机高通量表型平台（UAV-HTPPs）研究了四个生长阶段的玉米自交系（117个温带系，135个热带系）的PH。我们使用基于作物表面模型和正镶嵌模型的自动管道提取了PH数据。无人机和手动测量的PH数据之间的相关性达到0.95。在温带田间条件下，温带玉米品系在早期生长阶段的生长速度快于热带玉米品系，但热带植物在生长后期的生长速度更快，并最终变得比温带玉米高。全基因组关联研究确定了七个与PH相关的性状的68个独特的定量性状基因座（QTL），其中35％的QTL与先前报道的控制PH的特征相符。通常，不同的QTL在不同的生长阶段控制PH，但是八个QTL在多个生长阶段同时控制PH和生长速率。基于基因注释和表达谱，我们确定了控制PH的候选基因。由无人机-HTPPs收集的PH数据是可靠的，并且遗传定位能力很高。因此，UAV-HTPPs在PH研究中具有巨大的潜力。

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