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Author (up) Mei, L.; Cheng, X.Z.; Wang, S.H.; Wang, L.X.; Liu, C.Y.; Sun, L.; Xu, N.; Humphry, M.E.; Lambrides, C.J.; Li, H.B.; Liu, C.J. url  doi
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  Title Relationship between bruchid resistance and seed mass in mungbean based on QTL analysis Type Journal Article
  Year 2009 Publication Genome / National Research Council Canada = Genome / Conseil National de Recherches Canada Abbreviated Journal Genome  
  Volume 52 Issue 7 Pages 589-596  
  Keywords Animals; Beetles/*pathogenicity; Fabaceae/*genetics; Genotype; Immunity, Innate/genetics; Plant Diseases/*genetics; *Quantitative Trait Loci; Seeds/*genetics  
  Abstract Bruchids (Coleoptera: Bruchidae) can cause serious damage to mungbean and several other leguminous crops and there is a strong association between small seed size and bruchid resistance. In investigating the feasibility of breeding large-seeded cultivars with high levels of bruchid resistance, we studied the relationship between these two traits by QTL analysis. A major locus conferring resistance to Callosobruchus chinensis was identified from a wild mungbean genotype, 'ACC41' (belonging to Vigna radiata var. sublobata), collected in Australia. The proportion of the C. chinensis resistance response that could be attributed to this single QTL varied among four different resistance assays. The highest value reached was 98.5%, suggesting that bruchid resistance in this genotype is likely conditioned by this single locus. The QTL was robust and its detection was not affected by the use of different sources of the insect, different lengths and conditions of seed storage, or different bruchid resistance assay methods. This bruchid resistance QTL was coincident with one of the loci conferring seed mass detected from the three seed sources produced in Australia. However, such a co-location was not detected for the seed source produced in China. Covariance analysis revealed a complex relationship between seed mass and bruchid resistance. Nevertheless, the effect of the bruchid resistance QTL remained highly significant for all four assays after the effect of seed mass was accounted for. These results, together with the relationship between the bruchid resistance QTL identified in this study and a second one detected previously in a wild mungbean genotype from Madagascar, are discussed.  
  Address Institute of Crop Sciences, The Chinese Academy of Agricultural Sciences, Beijing 100081, China  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0831-2796 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:19767890 Approved no  
  Call Number Bridgewater @ tdeem @ Serial 103  
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