Leaf is the main organ of photosynthetic reaction of plants. Studying the genetic mechanism that affects the leaf shape is very important for the improvement of maize production. In this study, a RIL population, derived from a cross between Ye478 and Qi319, was planted in four different environments, and six leaf morphological traits were measured, including the leaf angle of first leaf above ear, the leaf angle of first leaf below ear, leaf orientation value, leaf area of first leaf above ear, leaf area of ear and leaf area of first leaf below ear. By combining with a genetic map containing 4,602 bin markers, 39 QTLs associated with leaf morphological traits were identified. Among them, four QTLs explained more than 10% of the phenotypic variance, and the QTL qLOV8‐2 which controlled LOV not only had a phenotypic contribution rate of 13.86% but also was detected in four environments, which could be considered as a stable major QTL. These results provide useful information for understanding the molecular mechanisms controlling maize leaf morphological traits.

中文翻译：

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利用玉米多环境超高密度图谱对重组自交系种群叶片形态性状的数量性状基因座进行遗传定位

叶是植物光合作用的主要器官。研究影响叶片形状的遗传机制对于提高玉米产量非常重要。本研究在四个不同的环境中种植了来自Ye478和Qi319杂交的RIL种群，并测量了六个叶片形态特征，包括耳上第一片叶子的叶片角，耳下第一片叶子的叶片角。 ，叶片方向值，穗上方第一片叶子的面积，穗上的叶片面积和穗下的第一片叶子的面积。通过与包含4,602个bin标记的遗传图谱相结合，鉴定出39个与叶片形态性状相关的QTL。其中，四个QTL解释了超过10％的表型变异，而控制LOV的QTL qLOV8-2不仅具有13的表型贡献率。86％，但在四个环境中也被检测到，可以认为这是一个稳定的主要QTL。这些结果为了解控制玉米叶片形态性状的分子机制提供了有用的信息。