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对窄叶青8号(矮生性基因来自花龙水田谷)、矮种水田谷、辐包矮21号和竹槌等四个籼稻矮源进行了研究。描述了它们在广州晚季自然条件下的表型表现。遗传分析表明:高秆对矮杆除辐包矮21号表现为不完全显性外,其余三个矮源均表现为完全显性。窄叶青8号和竹槌的矮生性均由一个隐性主效基因控制,同时携带一组具有正向效应和负向效应的修饰基因。矮种水田谷和辐包矮21号的矮生性则俱由微效基因控制。按超亲率大小,修饰基因效应强度的大小顺序为:竹槌>矮种水田谷>窄叶青8号>辐包矮21号。矮生性基因的等位关系分析指出:竹槌同矮仔占是互为等位的,窄叶青8号同矮仔占是互不等位的,从而推断竹槌同窄叶青8号也是互不等位的。根据矮生性基因的遗传方式和等位关系,把我国现有的8个主要籼稻矮源归纳为两类四群。此外,还就诱发突变和自发突变矮源的共性以及寻找或创造新的非等位矮源的意义进行了讨论。
Four indica rice dwarf sources such as Narrow Yeqing 8 (dwarf gene from Hua Long paddy valley), dwarf paddy field valley, Jianbao 21 and bamboo mallet were studied. Described their phenotypic performance under natural conditions in late-season Guangzhou. Genetic analysis showed that: tall stalks on the dwarf pole in the dwarfing short No. 21 showed incompletely dominant, the remaining three dwarf sources were completely dominant. Zygophyllum numurum 8 and mallet dwarfism are controlled by a recessive major gene and carry a group of modified genes with positive and negative effects. Dwarf paddy fields and dwarfism short package No. 21 dwarfism are controlled by the micro-gene. According to the rate of super-relatives, the order of the intensity of modified gene effect was as follows: bamboo mallet> short paddy field valley> narrow leaf green> The analysis of the allelic relationship of dwarfism genes indicated that bamboo mallet and dwarf parents accounted for each other’s position. Not equal to each other. According to the genetic mode and allelic relationship of dwarfism genes, the eight major dwarf indica rice sources in our country were classified into two groups and four groups. In addition, we discuss the commonalities of induced mutations and spontaneous mutations and the significance of finding or creating new non-allelic dwarfs.