Abstract：
: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.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Wang X,Zhang R,Song W,Han L,Liu X,Sun X,Luo M,Chen K,Zhang Y,Yang H,Yang G,Zhao Y,Zhao Jdoi
10.1038/s41598-019-39448-zsubject
Has Abstractpub_date
2019-03-05 00:00:00pages
3458issue
1issn
2045-2322pii
10.1038/s41598-019-39448-zjournal_volume
9pub_type
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