Identification of an Erect Panicle Mutant ep7 in Rice and Analysis of the Candidate Gene

  • ZHU Hai-tao ,
  • KE Shan-wen ,
  • FENG Xiao-long ,
  • ZOU Long-hai ,
  • ZENG Xiu-yu ,
  • ZHANG Xiang-qian
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  • Guangdong Key Laboratory of Plant Molecular Breeding, College of Agronomy, South China Agricultural University, Guangzhou 510642, China

Received date: 2014-05-11

  Online published: 2014-09-20

Abstract

A rice mutant erect panicle 7(ep7),obtained from tissue culture of a japonica variety Zhonghua 11,showed a dense and erect panicle and significantly reduced plant height,effective panicle number per plant,grain length and 1000-grain weight.The genetic analysis of a F2 segregation population derived from the cross between ep7 and an indica variety Huajingxian 74 demonstrated that the mutant phenotype was controlled by a single recessive gene on the long arm of chromosome 7,termed EP7,between two InDel markers ID5198-2 and ID4309-1 with 0.7 cM and 0.5 cM genetic distance,respectively.Morever,bioinformatic analysis and sequence polymorphorism revealed that the mutant phenotype might be caused by a large DNA fragment insertion in EP7 gene.

Cite this article

ZHU Hai-tao , KE Shan-wen , FENG Xiao-long , ZOU Long-hai , ZENG Xiu-yu , ZHANG Xiang-qian . Identification of an Erect Panicle Mutant ep7 in Rice and Analysis of the Candidate Gene[J]. Acta Agriculturae Boreali-Sinica, 2014 , 29(4) : 44 -48 . DOI: 10.7668/hbnxb.2014.04.008

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