谷子矮秆突变体si-dw4的表型特征及其对GA_(3)的敏感性分析  

Analysis for The Phenotypic Characteristics of The Dwarf Mutant si-dw4 in Foxtail Millet and Its Sensitivity to GA_(3)

作　　者：付颖 柴晓娇 王显瑞 白晓雷 沈轶男 张姼 FU Ying;CHAI Xiaojiao;WANG Xianrui;BAI Xiaolei;SHEN Yi’nan;ZHANG Shi(Research Institute of Agriculture and Animal Husbandry of Chifeng,Inner Mongolia Chifeng 024031,China)

机构地区：[1]赤峰市农牧科学研究所,内蒙古赤峰024031

出　　处：《种子》2022年第4期91-95,共5页Seed

基　　金：内蒙古自治区自然科学基金项目(2018 BS 03008);财政部和农业农村部:国家现代农业产业技术体系资助。

摘　　要：谷子矮秆突变体si-dw4是经过自然突变形成的矮化突变体,本研究对其矮化表型及其对GA_(3)的敏感性进行了分析。结果表明,突变体si-dw4的株高与野生型相比显著降低,为野生型ZT 002的27%左右;幼苗期的叶、中胚轴、胚芽鞘和根均对外源GA_(3)不敏感,证明si-dw4属于GA_(3)不敏感型矮化突变体。此外,本研究初步阐明了突变体si-dw4的矮化与GA_(3)信号转导途径受阻相关。The mutant si-dw4 was a dwarf mutant formed by natural mutation.Then its dwarfing phenotype and the sensitive response to gibberellin were analyzed.The results showed that the plant height of the dwarf mutant was about 27%of that of the wild type and significantly decreased.The leaf,mesocotyl,coleoptiles and root at seedling stage were insensitive to exogenous GA_(3).It can be concluded that this mutant is a gibberellin-insensitive dwarf mutant.In addition,this study preliminarily illustrates that dwarfing mutation of si-dw4 is related to the inhibition of gibberellin signal transduction pathway.

关 键 词：谷子 矮秆突变体 表型 GA_(3)敏感性 

分 类 号：S515[农业科学—作物学]