Crop responses to drought and the interpretation of adaptation
Crop responses to drought and the interpretation of adaptation
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DOI：
10.1007/bf00024010
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发表时间：
1996-11-01
影响因子：
4.2
通讯作者：
Blum, A
中科院分区：
文献类型：
--
作者：
Blum, A
干旱是一种多维胁迫，影响植物组织的各个层面。在整个植物和作物水平上，干旱的影响和植物对干旱的反应是最复杂的，因为它反映了在空间和时间上组织的所有底层水平的胁迫影响和反应的整合。本综述讨论了作物对干旱胁迫反应的一些主要方面，这些方面与植物育种相关。当从分子研究得出作物抗旱性遗传改良的结论时，重点放在整个植物方面，而这些方面往往被忽视。讨论的主题包括幼苗的出苗和建立、植物物候、叶面积、水分亏缺和同化、渗透调节、根和产量的形成。讨论最后以农艺意义上作物对干旱条件的适应进行了解释。得出了有关干旱条件下植物育种的结论。
Drought is a multidimensional stress affecting plants at various levels of their organization. The effect of and plant response to drought at the whole plant and crop level is most complex because it reflects the integration of stress effects and responses at all underlying levels of organization over space and time. This review discusses some of the major aspects of crop response to drought stress which are relevant for plant breeding. Emphasis is given to whole plant aspects which are too often disregarded when conclusions are drawn from molecular studies towards the genetic improvement of crop drought resistance. Topics discussed are seedling emergence and establishment, plant phenology, leaf area, water deficit and assimilation, osmotic adjustment, the root and the formation of yield. The discussion is concluded with the interpretation of crop adaptation to drought conditions in its agronomic sense. Conclusions are drawn regarding plant breeding for drought-prone conditions.