Plant Stress Physiology

More frequent and severe drought combined with high temperatures has been recognized as a potential impact of global warming on agriculture. Improving crop yield under water stress is the goal of agri- cultural researchers worldwide. The direct selection for yield under drought was the major breed...

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Autor principal: Shaba la, Sergey
Formato: Libro
Lenguaje:English
Publicado: CABI 2014
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Acceso en línea:https://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/37112
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Sumario:More frequent and severe drought combined with high temperatures has been recognized as a potential impact of global warming on agriculture. Improving crop yield under water stress is the goal of agri- cultural researchers worldwide. The direct selection for yield under drought was the major breeding strategy that was successful in some crops. Drought modifies the structure and function of plants. An understanding of the impact, mechanisms and traits underlying drought tolerance is essential to develop drought-tolerant cultivars. Identification and evaluation of key physiological traits would aid and strengthen molecular breeding and genetic engineering programmes to target and deliver traits that improve water use and/or drought tolerance of crops. There is an overlap between different osmotic stresses and the selection of appropriate drought evaluation methods. The benefits of genetic engineering have been realized in crop improvement for quality traits and several promising genes have emerged in the last decade as candidates for drought tolerance. Combining the physiological traits that would sustain yield under drought and incorporating elite QTLs and genes underlying these traits into high-yielding cultivars would be a successful strategy.