几个谷子穗发育突变体的表型分析  

Phenotypic Analysis of Panicle Development Mutants of Foxtail Millet[Setaria italica(L.)P.Beauv.]

作　　者：相吉山 智慧[2] 永辉 汤沙[2] 王春苗 贾冠清[2] 贾彦超 刁现民[2] XIANG Jishan;ZHI Hui;YONG Hui;TANG Sha;WANG Chunmiao;JIA Guanqing;JIA Yanchao;DIAO Xianmin(Academy of Agricultural Sciences/Key Laboratory of Agro-ecological Protection & Exploitation and Utilization of Animal and Plant Resources in Eastern Inner Mongolia,Chifeng University,Chifeng Inner Mongolia 024000,China;Institute of Crop Sciences,Chinese Academy of Agricultural Sciences,Beijing 100081,China)

机构地区：[1]赤峰学院农业科学研究院/蒙东农业生态保护与动植物资源开发利用实验室,内蒙古赤峰024000 [2]中国农业科学院作物科学研究所,北京100081

出　　处：《西北农业学报》2020年第11期1603-1614,共12页Acta Agriculturae Boreali-occidentalis Sinica

基　　金：内蒙古自治区高等学校青年科技英才支持计划(NJYT-19-A25);国家自然科学基金(31660423);中国科学院“西部之光”人才培养引进计划;中央引导地方科技发展资金(ZY20200089);赤峰市“玉龙英才”创新团队项目。

摘　　要：谷子的穗是产量的决定器官,突变体是研究穗发育调控基因的理想材料。对利用EMS化学诱变Yugu1获得稳定遗传的穗发育突变体进行表型分析。结果显示,不同于野生型的圆筒形穗,4个穗形突变体中,2个突变体为短粗圆筒形穗,另两个分别为鸭嘴形穗和棍棒形穗;并且穗下节间长度、主穗质量、主穗粒质量等均极显著低于野生型。6个稀码突变体中,3个突变体的穗码密度极显著低于野生型,2个突变体的穗码密度显著低于野生型,1个突变体的主穗码数显著减少,但穗码密度变化不显著;在籽粒产量方面,T25突变体只有主穗粒数显著少于野生型外,其他5个突变体的主穗粒数、主穗粒质量、千粒质量均显著低于野生型。这10个突变体的表型变异明显,可作为研究谷子及禾本科植物穗发育调控基因的理想材料。The panicle of foxtail millet is the decisive organ for yield,and the mutant is an ideal material for studying the genes which regulate panicle development.In this study,we analyzed the phenotype of panicle development mutants with stable inheritance originated from‘Yugu1’by chemical mutagenesis with EMS.The results showed that the panicle shapes of 4 mutants were different from the wild-type cylindrical spike,2 of them were stubby cylindrical spike,2 of them were duck mouthform and clavate spike,respectively.And the peduncle length,grain mass and mass of per main panicle were significantly lower than those of wild type.Among the 6 lax panicle mutants,the spikelet density per main panicle of 3 mutants was significantly lower than that of the wild type,the spikelet density per main panicle of 2 mutant was significantly lower than that of the wild type,and the spikelet number per main panicle of one mutant was significantly lower than that of the wild type,but the change of spikelet density was not significant.In terms of grain yield traits,only the number of grains per main panicle of T25 was significantly lower than that of wild type,the number and mass of grains per main panicle and the mass of 1000 grains of other five mutants were significantly lower than that of wild type.These 10 mutants had obvious phenotypic variation,which could be used as ideal materials for studying panicle development regulation genes in foxtail millet and Gramineae.

关 键 词：谷子 穗形 稀码 穗码密度 

分 类 号：S512.1[农业科学—作物学] S311