Chinese Journal OF Rice Science

Chinese Journal OF Rice Science >

2010 , Vol. 24 >Issue 2: 103 - 107

DOI: https://doi.org/10.3969/j.issn.1001-7216.2010.02.01

综述与专论

Mechanism of Sterility and Breeding Strategies of Photoperiod/ThermoSensitive Genic Male Sterile Rice

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  • Rice Research Institute, Hunan Agricultural University, Changsha 410128, China

Received date: 1900-01-01

  Revised date: 1900-01-01

  Online published: 2010-03-10

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Abstract

The research progresses on genetics of photoperiod and/or temperature sensitive genic male sterility \[P(T)GMS\] in rice were reviewed. A new idea for explaining the sterility mechanism of P(T)GMS rice was proposed. The fertility transition from sterile to fertile phase was the result of cooperative regulation of majoreffect sterile genes with the photoperiod and/or temperature sensitive genes for plant development, but not the socalled pgms gene in P(T)GMS rice. The minoreffect genes, which exhibited accumulative effect for sterility, were the important factors that affect the critical temperature for sterility. The more minoreffect genes the sterile line held, the lower the critical temperature for sterility was. The critical temperature for sterility should be invariable if whole minoreffect genes were homozygous. The strategies for breeding photoperiod/thermosensitive genic male sterile rice were also put forward. The selective indexes of critical photoperiod and temperature for fertility transition should be set according to varietal type and ecological region. Adding selection pressures was the key technology to breed P(T)GMS rice with lower critical temperature for sterility. Improving the comprehensive performance of the whole traits and combining ability was vital for breeding photoperiod/thermosensitive genic male sterile rice line.

Key words： rice; photoperiod/thermosensitive genic male sterility; mechanism of sterility; breeding strategy

Cite this article

CHEN Liyun,XIAO Yinghui . Mechanism of Sterility and Breeding Strategies of Photoperiod/ThermoSensitive Genic Male Sterile Rice[J]. Chinese Journal OF Rice Science, 2010 , 24(2) : 103 -107 . DOI: 10.3969/j.issn.1001-7216.2010.02.01

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