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| Genetic Analysis and Mapping of an Enclosed Panicle Mutant Locus esp1 in Rice (Oryza sativa L.) |
| DUAN Yuan-lin, GUAN Hua-zhong, ZHUO Ming, CHEN Zhi-wei, LI Wen-tao, PAN Run-sen, MAO Da-mei, ZHOU Yuan-chang, WU Wei-ren |
1.Key Laboratory of Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education/Fujian Agricultural and Forestry University,Fuzhou 350002, P.R.China
2.Fujian Provincial Key Laboratory of Marker-Assisted Breeding of Rice/Fujian Agriculture and Forestry University, Fuzhou 350002, P.R.China |
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摘要 A mutant was isolated from the M2 of 60Co-g ray mutagenized male-fertility restorer line Zao-R974 in rice. The mutant showed pleiotropic phenotypes including dwarfism, delayed heading time, short and partially enclosed panicles, short uppermost internode, decreased grain and secondary branch numbers per panicle, and partially degenerated spikelets. The mutant was named as esp1 (enclosed shorter panicle 1). Genetic analysis indicated that the mutant phenotype was controlled by a recessive locus. Spraying exogenous GA3 did not rescue the panicle enclosure. Using an F2 and a BC1 population of the cross between esp1 and a japonica cultivar Nipponbare, we mapped the ESP1 locus to a region of ~260 kb on chromosome 11. This result provides a basis for further map-based cloning of the ESP1 locus.
Abstract A mutant was isolated from the M2 of 60Co-g ray mutagenized male-fertility restorer line Zao-R974 in rice. The mutant showed pleiotropic phenotypes including dwarfism, delayed heading time, short and partially enclosed panicles, short uppermost internode, decreased grain and secondary branch numbers per panicle, and partially degenerated spikelets. The mutant was named as esp1 (enclosed shorter panicle 1). Genetic analysis indicated that the mutant phenotype was controlled by a recessive locus. Spraying exogenous GA3 did not rescue the panicle enclosure. Using an F2 and a BC1 population of the cross between esp1 and a japonica cultivar Nipponbare, we mapped the ESP1 locus to a region of ~260 kb on chromosome 11. This result provides a basis for further map-based cloning of the ESP1 locus.
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Received: 24 March 2011
Accepted:
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| Fund: This work was supported by the National Transgenic Projects of China (2009ZX-08009-109B), the Natural Science Foundation of Fujian Province, China (2012J01091) and the New Century Excellent Talents in University of Fujian Province, China (KY0010057). |
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Corresponding Authors:
Correspondence WU Wei-ren, Tel: +86-591-83789176, E-mail: wuwr@fjau.edu.cn
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| About author: DUAN Yuan-lin, Tel: +86-591-83789338, E-mail: ylduan863@163.com |
Cite this article:
DUAN Yuan-lin, GUAN Hua-zhong, ZHUO Ming, CHEN Zhi-wei, LI Wen-tao, PAN Run-sen, MAO Da-mei, ZHOU Yuan-chang, WU Wei-ren.
2012.
Genetic Analysis and Mapping of an Enclosed Panicle Mutant Locus esp1 in Rice (Oryza sativa L.). Journal of Integrative Agriculture, 12(12): 1933-1939.
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