Selection and Characterization of a Novel Photoperiod-Sensitive Male Sterile Line in Upland Cotton  

作　　者：Jianhui Ma Hengling Wei Ji Liu Meizhen Song Chaoyou Pang Long Wang Wenxiang Zhang Shuli Fan Shuxun Yu 

机构地区：[1]State Key Laboratory of Cotton Biology,the Institute of Cotton Research,the Chinese Academy of Agricultural Sciences [2]College of Life Sciences,Henan Normal University [3]College of Agronomy,Northwest A & F University

出　　处：《Journal of Integrative Plant Biology》2013年第7期608-618,共11页植物学报（英文版）

基　　金：supported by the National Hi-Tech R&D Program of China(2011AA10A102);the National Basic Research Program of China(2010CB126006)

摘　　要：Upland cotton （Gossypium hirsutum L.） shows strong heterosis. However, heterosis is not widely utilized owing to the high cost of hybrid seed production. Creation of a photoperiod-sensitive genetic male sterile line could substantially reduce the cost of hybrid seed production in upland cotton. Such a mutant with virescent marker was found by space mutation in near-earth orbit and its traits had been stable after 4 years of selection in Anyang and Sanya, China. This mutant was fertile with an 11-12.5 h photoperiod when the temperature was higher than 21.5 ℃ and was sterile with a 13-14.5 h photoperiod. Genetic analysis indicated that both traits were controlled by a single recessive gene or two closely linked genes. Also, the cytological observations and transcriptome profiling analysis showed that the degradation of pollen grain cytoplasm should be the primary reason why the mutant line were male sterile under long-day conditions.Upland cotton （Gossypium hirsutum L.） shows strong heterosis. However, heterosis is not widely utilized owing to the high cost of hybrid seed production. Creation of a photoperiod-sensitive genetic male sterile line could substantially reduce the cost of hybrid seed production in upland cotton. Such a mutant with virescent marker was found by space mutation in near-earth orbit and its traits had been stable after 4 years of selection in Anyang and Sanya, China. This mutant was fertile with an 11-12.5 h photoperiod when the temperature was higher than 21.5 ℃ and was sterile with a 13-14.5 h photoperiod. Genetic analysis indicated that both traits were controlled by a single recessive gene or two closely linked genes. Also, the cytological observations and transcriptome profiling analysis showed that the degradation of pollen grain cytoplasm should be the primary reason why the mutant line were male sterile under long-day conditions.

关 键 词：Photoperiod-sensitive genetic male sterile sterility mechanism upland cotton virescent marker. 

分 类 号：S562[农业科学—作物学]