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Recent progress in drought and salt tolerance studies in Brassica crops

文献类型： 外文期刊

作者： Zhang, Xuekun 1 ; Lu, Guangyuan 1 ; Long, Weihua 1 ; Zou, Xiling 1 ; Li, Feng 1 ; Nishio, Takeshi 3 ;

作者机构： 1.CAAS, Oil Crops Res Inst, Key Lab Oil Crops Biol & Genet Improvement, Minist Agr, Wuhan 430062, Peoples R China

2.Jiangsu Acad Agr Sci, Inst Ind Crops, Nanjing 210014, Jiangsu, Peoples R China

3.Tohoku Univ, Grad Sch Agr Sci, Sendai, Miyagi 9818555, Japan

关键词： Brassica;drought;salinity;tolerance;genetic study

期刊名称：BREEDING SCIENCE （ 影响因子：2.086； 五年影响因子：2.632 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Water deficit imposed by either drought or salinity brings about severe growth retardation and yield loss of crops. Since Brassica crops are important contributors to total oilseed production, it is urgently needed to develop tolerant cultivars to ensure yields under such adverse conditions. There are various physiochemical mechanisms for dealing with drought and salinity in plants at different developmental stages. Accordingly, different indicators of tolerance to drought or salinity at the germination, seedling, flowering and mature stages have been developed and used for germplasm screening and selection in breeding practices. Classical genetic and modern genomic approaches coupled with precise phenotyping have boosted the unravelling of genes and metabolic pathways conferring drought or salt tolerance in crops. QTL mapping of drought and salt tolerance has provided several dozen target QTLs in Brassica and the closely related Arabidopsis. Many drought-or salt-tolerant genes have also been isolated, some of which have been confirmed to have great potential for genetic improvement of plant tolerance. It has been suggested that molecular breeding approaches, such as marker-assisted selection and gene transformation, that will enhance oil product security under a changing climate be integrated in the development of drought- and salt-tolerant Brassica crops

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