气候变化引起干旱等极端天气高强度、高频率发生，玉米的生长发育，尤其是穗的分化与发育，对干旱胁迫的敏感性不断增加。因此，研究干旱胁迫对玉米穗发育的影响具有非常重要的意义。本文根据调查研究和前人的研究成果，从玉米雌雄穗分化、开花吐丝授粉特性、籽粒发育等三个阶段，对不同程度的干旱胁迫如何影响玉米穗发育进程展开讨论。旨在为玉米的高产、稳产提供良好的理论指导，同时也为玉米抗旱研究奠定理论基础。
英文摘要:
Climate change could cause high intensity and frequency of extreme weather such as drought, and the sensitivity of maize growth and development, especially, the tassel and ear differentiation and development, to drought stress would increase constantly. Based on our investigations and previous studies, this paper discussed the different degrees of drought stress on the development process of maize ear and tassel from three stages, namely, the differentiation of tassels and ears, the pollination characteristics of tasseling and silking, and the development of grains. The purpose aims to provide an adaptive theoretical guidance for high and stable yield of maize, and also to lay an academic foundation for research on drought resistance of maize.
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