综述了作物的耐旱机制、水分胁迫下的生理生化反应及超微结构变化的研究进展，并指出了今后需要进一步研究的问题。
Drought tolerance mechanism of crops, the reaction of physiology biochemistry and the changes of ultrastructure under water stress were reviewed in this article.
根据各自序列相似同源基因的功能推测，MD 1、MD 2和MD 3三个片段可能与“81565”的耐旱机制有关。
It was concluded according to the functions of their homologous sequences that fragments MD1, MD2 and MD3 feasibility related to drought tolerance mechanism of inbred line '81565'.
本文概述了植物耐旱生理及其分子机制。
This article reviewed the physiological and molecular mechanism of plant drought-resistant.
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