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首页> 外文期刊>Journal of Experimental Botany >Simulating the effect of flowering time on maize individual leaf area in contrasting environmental scenarios
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Simulating the effect of flowering time on maize individual leaf area in contrasting environmental scenarios

机译：在对比环境场景中模拟开花时间对玉米个体叶面积的影响

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摘要

The quality of yield prediction is linked to that of leaf area. We first analysed the consequences of flowering time and environmental conditions on the area of individual leaves in 127 genotypes presenting contrasting flowering times in fields of Europe, Mexico, and Kenya. Flowering time was the strongest determinant of leaf area. Combined with a detailed field experiment, this experiment showed a large effect of flowering time on the final leaf number and on the distribution of leaf growth rate and growth duration along leaf ranks, in terms of both length and width. Equations with a limited number of genetic parameters predicted the beginning, end, and maximum growth rate (length and width) for each leaf rank. The genotype-specific environmental effects were analysed with datasets in phenotyping platforms that assessed the effects (i) of the amount of intercepted light on leaf width, and (ii) of temperature, evaporative demand, and soil water potential on leaf elongation rate. The resulting model was successfully tested for 31 hybrids in 15 European and Mexican fields. It potentially allows prediction of the vertical distribution of leaf area of a large number of genotypes in contrasting field conditions, based on phenomics and on sensor networks.
机译：产量预测的质量与叶面积相关联。我们首先分析了在欧洲，墨西哥和肯尼亚领域的127种基因型中患有127个基因型的个体叶片的开花时间和环境条件的后果。开花时间是叶面积最强的决定因素。结合详细的田间实验，该实验在最终叶片数和叶片沿着长度和宽度方面表现出在最终叶子数和叶片生长率和生长持续时间的分布的大量影响。具有有限数量的遗传参数的等式预测每个叶子等级的开始，结束和最大生长速率（长度和宽度）。通过表型平台中的数据集分析了基因型特异性环境效应，所述数据集评估叶片宽度截头光量的效果（I），以及叶伸长率的温度，蒸发需求和土壤水势的效果（II）。在15个欧洲和墨西哥领域成功测试了所得模型31个杂种。它可能允许预测对比对比场条件的大量基因型的叶面积的垂直分布，基于表情和传感器网络。

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