玉米叶部形态指标与抗旱性的关系研究

Study on the Relations of Leaf Morghology Indexes and Drought Resistance of Maize

研究了中度水分胁迫下不同抗旱型品种的叶部形态特征及其与抗旱性的关系。结果表明:叶片衰老指数、叶片卷曲指数与抗旱性呈显著负相关;叶形值、叶向值与抗旱性呈显著正相关。灰色关联度分析结果表明,叶向值、叶形值与抗旱性的关系较叶片卷曲指数、叶片衰老指数更为重要,以上叶部形态指标是抗旱性鉴定的重要指标之一。

The maize characters and relations of leaf morghology of different drought resistance varieties were studied under moderate water stress. The results showed that the leaf senescent index and leaf rolling index were positively related to the drought resistance, while leaf shape value, leaf orientation value were in the opposite way. According to the results of gray association analysis, it could be concluded that leaf shape value, leaf orientation value were more important relations to drought resistance than the leaf rolling index and leaf senescent index. The leaf morghology indexes of above were one of the important indexes of the identification of drought resistance of maize.