Sterility Characteristics and the Genetic Law of a Reverse Thermo- sensitive Genic Male Sterile Mutant E6421S in Peppers

doi:10.16420/j.issn.0513-353x.2018-0900

ACTA HORTICULTURAE SINICA ›› 2019, Vol. 46 ›› Issue (6): 1112-1121.doi: 10.16420/j.issn.0513-353x.2018-0900

• Research Papers • Previous Articles Next Articles

Sterility Characteristics and the Genetic Law of a Reverse Thermo- sensitive Genic Male Sterile Mutant E6421S in Peppers

FENG Wenpeng1，ZHOU Shudong2，YANG Bozhi2，YI Ting2，XIE Lingling2，Liu Feng2,*，and MA Yanqing1,*

1Horticulture & Landscape College of Hunan Agriculture University，Changsha 410000，China；2Hunan Vegetable Research Institute，Changsha 410000，China

Online:2019-06-25 Published:2019-06-25

Abstract

Abstract: The critical fertility transition temperature, physiological and biochemical characteristics and genetic law of a reverse thermo-sensitive male sterile mutant E6421S in peppers were studied. The results showed that the critical fertility transition temperature of E6421S was 28 ℃. It was fertile above 28 ℃，and was sterile below 28 ℃. Microscopic observation in 25 ℃ showed that the tapetum of E6421S adhered to pollen mother cells at tetrad stage，leading to the abortion of pollen mother cells. Physiological and biochemical analysis showed that the soluble protein content and catalase activity of E6421S flower buds were significantly lower than those of the original breed with normal fertility，while the free proline content decreased with the development of flower buds, which was opposite to that of the original breed with normal fertility. The investigation of population traits of E6421S and the normal fertile original variety 6421 hybrid progenies showed that the sterility trait of E6421S was single-gene controlled recessive trait.

Key words: pepper, thermo-sensitive genic male sterility, mutant, fertility transition

CLC Number:

S 641.3

FENG Wenpeng1，ZHOU Shudong2，YANG Bozhi2，YI Ting2，XIE Lingling2，Liu Feng2,*，and MA Yanqing1,*. Sterility Characteristics and the Genetic Law of a Reverse Thermo- sensitive Genic Male Sterile Mutant E6421S in Peppers[J]. ACTA HORTICULTURAE SINICA, 2019, 46(6): 1112-1121.

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Sterility Characteristics and the Genetic Law of a Reverse Thermo- sensitive Genic Male Sterile Mutant E6421S in Peppers

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