ACTA AGRICULTURAE BOREALI-SINICA ›› 2013, Vol. 28 ›› Issue (6): 59-64. doi: 10.7668/hbnxb.2013.06.010

Special Issue: Wheat Biotechnology

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DistRibution of Allelic VaRiation of DwaRfing Genes Rht-B1b and Rht-D1b in Xinjiang SpRing Wheat GeRmplasm ResouRces

WANG Liang1,2, LI Wei-hua3, XU Hong-jun1, LU Peng-jun3, CUI Feng-juan1, LI Shi-lei3   

  1. 1 Crop Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi 832000, China;
    2 Xinjiang Production and Construction Group Key Laboratory of Crop Germplasm Enhancement and Gene Resources Utilization, Shihezi 832000, China;
    3 College of Agronomy, Shihezi University, Shihezi 832003, China
  • Received:2013-10-21 Published:2013-12-28

Abstract: In order to provide crucial information and methods of molecular marker-assisted selection for dwar-fing breeding in Xinjiang spring wheat.A total of 270 spring wheat germplasm resources from Xinjiang wheat re-gions,including 49 landraces, 144 introduced cultivars and 77 local cultivars in Xinjiang, were identified for the al-lelic variation composition of dwarfing gene Rht-B1b(Previously Rht1) and Rht-D1b(Previously Rht2) by using STS markers(NH-BF.2/WR1.2,NH-BF.2/MR1,DF/WR2.4 and DF/MR2) at two loci Rht-B1 and Rht-D1.The results indicated that the percentages of cultivars with gene Rht-B1a(Wildtype),Rht-B1b(Mutation),Rht-D1a (Wildtype),Rht-D1b(Mutation) are 63.3%,36.7%,42.2%,57.8%,respectively.And allelic variation Rht-B1a and Rht-D1 b are main type at Rht-B1 and Rht-D1 loci in Xinjiang spring wheat germplasm resources.the number of cultivars(Lines) with one dwarfing gene(Rht-B1b or Rht-D1b) is 233 and its percentage is 86.3%,the number of cultivars with two dwarfing genes is 11 and its percentage is 4.1%,the number of cultivars neither Rht-B1b gene nor Rht-D1b gene is 26 and its percentage is 9.6%.The percentages of dwarfing gene Rht-B1b and Rht-D1b are ob-viously different in Xinjiang landraces, local cultivars and introduced cultivars, its is 20.4%, 87.8%, 72.7%, 24.7%,22.9%,65.3%,respectively.In summary,cultivars with dwarfing genotype Rht-B1b should be mainly se-lected for the improvement of plant height in Xinjiang spring wheat.The functional markers of two dwarfing gene (Rht-B1b and Rht-D1b) can be directly used for promoting the breeding efficiency.

Key words: Xinjiang, SpRing wheat, GeRmplasm ResouRces, DwaRfing gene, Allelic vaRiation, STS maRkeR

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Cite this article

WANG Liang, LI Wei-hua, XU Hong-jun, LU Peng-jun, CUI Feng-juan, LI Shi-lei. DistRibution of Allelic VaRiation of DwaRfing Genes Rht-B1b and Rht-D1b in Xinjiang SpRing Wheat GeRmplasm ResouRces[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(6): 59-64. doi: 10.7668/hbnxb.2013.06.010.

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