光敏色素与光敏感雌性不育苎麻育性转换的关系  

Participation of Phytochrome in Sterility Alteration of Photoperiod-sensitive female sterile Ramie

作　　者：刘恒蔚[1] 周瑞阳[2] 徐俐[3] 

机构地区：[1]长江大学生命科学学院,湖北荆州434025 [2]广西大学农学院,广西南宁530005 [3]长江大学农学院,湖北荆州434025

出　　处：《作物学报》2006年第4期597-600,共4页Acta Agronomica Sinica

基　　金：国家自然科学基金资助项目(39770453);湖北省教育厅重点项目(2000B05011)

摘　　要：利用红光(R)/远红光(FR)逆转的标准试验技术,对光周期敏感雌性不育苎麻(PFSR)进行长暗期(14 h/d)光间断处理。结果表明,R间断诱导雌性败育,延迟现蕾和开花;而FR可以逆转R的效应,使雌性可育;暗间断对雄性的育性没有明显影响。暗示光敏色素是PFSR雌性育性光敏性的光受体。Photoperiod-sensitive Female Sterile Ramie （PFSR） is sterile with long-day photoperiods （LD, ≥ 13 h 30 min light/d ） and fertile with short-day photoperiods （SD,≤ 13 h 20 min light/d ）. The treatments in the study were composed of LD, SD, and long dark phase （ 14 h dark/d） in SD photoperiods （ 10 h light/d） of PFSR with red light （R） / far red light （FR） alternate illuminations which is the standard reverse examination to check if phytochrome is the photoreceptor in a photo-induced reaction. The results showed that female sterile was induced and flower budding and flowering were deferred hy R-hreaking while these effects were reversed hy FR-hreaking and female hecame fertile. Female fertility was induced in the treatments with FR, R ＋ FR and SD （ 10 h light/d ）, and female sterility was induced in the treatments with R, FR ＋ R, R ＋ FR ＋ R and LD （ 〉 14 h light/d ）, but these were no effects on male fertility in all the treatments. It was indicated that phytochrome is the photoreceptor of female photoperiod-sensitive sterility in PFSR.

关 键 词：光敏色素 苎麻 光敏感雌性不育性 暗间断 

分 类 号：S563.1[农业科学—作物学]