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欧洲科学家利用WIWAM大型植物表型成像系统发表植物器官生长文章
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来自欧洲的科学家,利用WIWAM大型植物表型成像系统发表了题为Drought affects the rate and duration of organ growth but not inter organ growth coordination的文章,文章发表在知名期刊Plant Physiology上。
Drought affects the rate and duration of organ growth but not inter organ growth coordination
March 2021Plant Physiology
DOI:10.1093/plphys/kiab155
Abstract
Drought at flowering and grain filling greatly reduces maize (Zea mays) yield. Climate change is causing earlier and longer lasting periods of drought, which affect the growth of multiple maize organs throughout development. To study how long periods of water deficit impact the dynamic nature of growth, and to determine how these relate to reproductive drought, we employed a high-throughput phenotyping platform featuring precise irrigation, imaging systems, and image-based biomass estimations. Prolonged drought resulted in a reduction of growth rate of individual organs-though an extension of growth duration partially compensated for this-culminating in lower biomass and delayed flowering. However, long periods of drought did not affect the highly organized succession of maximal growth rates of the distinct organs, i.e., leaves, stems, and ears. Two drought treatments negatively affected distinct seed yield components: prolonged drought mainly reduced the number of spikelets, and drought during the reproductive period increased the anthesis-silking interval. The identification of these divergent biomass and yield components, which were affected by the shift in duration and intensity of drought, will facilitate trait-specific breeding towards future climate-resilient crops.