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

doi:10.7668/hbnxb.2014.04.008

Abstract

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.

Key words: Rice, Panicle trait, Erect panicle mutant, Gene mapping

CLC Number:

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]. journal1, 2014, 29(4): 44-48. doi: 10.7668/hbnxb.2014.04.008.

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