文献类型： 外文期刊
作者： Pandey, Manish K. 1 ; Monyo, Emmanuel 2 ; Ozias-Akins, Peggy 3 ; Liang, Xuanquiang 4 ; Guimaraes, Patricia 5 ; Niga 1 ;
作者机构： 1.Int Crops Res Inst Semi Arid Trop, Patancheru 502324, Andhra Pradesh, India
2.Int Crops Res Inst Semi Arid Trop, Lilongwe 1096, Malawi
3.Univ Georgia, Athens, GA 30602 USA
4.Guandong Acad Agr Sci, Crops Res Inst, Guangzhou 510640, Guangdong, Peoples R China
5.EMBRAPA, Natl Ctr Genet Resources & Biotechnol, BR-70770900 Brasilia, DF, Brazil
6.Henan Acad Agr Sci, Zhengzhou 450002, Peoples R China
7.USDA ARS, Crop Protect & Management Unit, Tifton, GA 31793 USA
8.Univ Calif Davis, Davis, CA 95616 USA
9.Univ Brasilia, BR-70910900 Brasilia, DF, Brazil
10.CIMMYT, CGIAR Generat Challenge Programme GCP, Mexico City 06600, DF, Mexico
11.Univ Western Australia, Crawley, WA 6009, Australia
关键词： Groundnut;Molecular markers;Molecular breeding;Genomic resources;Genetic improvement
期刊名称：BIOTECHNOLOGY ADVANCES （ 影响因子：14.227； 五年影响因子：16.301 ）
ISSN： 0734-9750
年卷期： 2012 年 30 卷 3 期
页码：
收录情况： SCI
摘要： Peanut genomics is very challenging due to its inherent problem of genetic architecture. Blockage of gene flow from diploid wild relatives to the tetraploid; cultivated peanut, recent polyploidization combined with self pollination, and the narrow genetic base of the primary genepool have resulted in low genetic diversity that has remained a major bottleneck for genetic improvement of peanut. Harnessing the rich source of wild relatives has been negligible due to differences in ploidy level as well as genetic drag and undesirable alleles for low yield. Lack of appropriate genomic resources has severely hampered molecular breeding activities, and this crop remains among the less-studied crops. The last five years, however, have witnessed accelerated development of genomic resources such as development of molecular markers, genetic and physical maps, generation of expressed sequenced tags (ESTs), development of mutant resources, and functional genomics platforms that facilitate the identification of QTLs and discovery of genes associated with tolerance/resistance to abiotic and biotic stresses and agronomic traits. Molecular breeding has been initiated for several traits for development of superior genotypes. The genome or at least gene space sequence is expected to be available in near future and this will further accelerate use of biotechnological approaches for peanut improvement. (C) 2011 Elsevier Inc. All rights reserved.
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