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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| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
CABI
2014
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| Subjects: | |
| Online Access: | https://scholar.dlu.edu.vn/thuvienso/handle/DLU123456789/37112 |
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| Institutions: | Thư viện Trường Đại học Đà Lạt |
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| Summary: | 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. |
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