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利用60Coγ射线辐照籼稻材料M804,获得了1个性状能稳定遗传的矮秆突变体MU101,对其形态学及细胞学方面进行了鉴定分析表明,该突变体田间表现植株矮化,叶色浓绿,株型紧凑,长势较强,抽穗和分蘖正常,节间数较野生型减少2个,各节间不按比例缩短。该突变体可作为一个特殊类别材料进行深入研究,同时也为该突变基因的定位克隆、遗传机理研究及利用分子标记辅助选择培育理想株高的新品种奠定了基础。
Using 60Coγ-ray to irradiate indica rice M804, we obtained a stable and inherited dwarf mutants MU101. The morphological and cytological analysis of the mutant showed that the mutants showed dwarf plants and dark leaves Green, plant compact, strong growth, normal heading and tillering, internode number decreased by 2 compared with the wild type, the internode is not shortened proportionally. The mutant can be used as a special type of material for further study. It also laid the foundation for the positional cloning of the mutant gene, the study of genetic mechanism and the selection of new varieties with ideal plant height by molecular marker-assisted selection.