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Waterlogging Tolerance of Crops: Breeding, Mechanism of Tolerance, Molecular Approaches, and Future Prospects

机译:作物的涝耐受性:育种,耐受机制,分子方法和未来前景

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摘要

Submergence or flood is one of the major harmful abiotic stresses in the low-lying countries and crop losses due to waterlogging are considerably high. Plant breeding techniques, conventional or genetic engineering, might be an effective and economic way of developing crops to grow successfully in waterlogged condition. Marker assisted selection (MAS) is a new and more effective approach which can identify genomic regions of crops under stress, which could not be done previously. The discovery of comprehensive molecular linkage maps enables us to do the pyramiding of desirable traits to improve in submergence tolerance through MAS. However, because of genetic and environmental interaction, too many genes encoding a trait, and using undesirable populations the mapping of QTL was hampered to ensure proper growth and yield under waterlogged conditions Steady advances in the field of genomics and proteomics over the years will be helpful to increase the breeding programs which will help to accomplish a significant progress in the field crop variety development and also improvement in near future. Waterlogging response of soybean and major cereal crops, as rice, wheat, barley, and maize and discovery of QTL related with tolerance of waterlogging, development of resistant variety, and, in addition, future prospects have also been discussed.
机译:淹水或洪水是低洼国家的主要有害非生物压力之一,由于涝渍而导致的作物损失相当高。植物育种技术,常规或基因工程,可能是在涝渍条件下成功增长的有效和经济的方式。标记辅助选择(MAS)是一种新的更有效的方法,可以识别在压力下的作物的基因组区域,这是之前不能进行的。综合分子联系地图的发现使我们能够通过MAS来完成所需的理想性状的理想性状,以改善淹没耐受性。然而,由于遗传和环境相互作用,编码特征的许多基因,并且使用不良群体的QTL的映射被阻碍,以确保在多年来基因组学和蛋白质组学领域的潜水条件下的适当增长和产量将有所帮助为了增加育种计划,这些计划将有助于在田间作物品种发展中实现重大进展,并在不久的将来改善。大豆和主要谷物作物的涝渍反应,作为稻米,小麦,大麦和玉米和QTL耐受性耐涝,抗性品种的发展,以及另外,还讨论了未来的前景。

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