六倍体小黑麦矮秆突变体研究  

Dwarf Mutant Lines of Hexaploid Triticale.

作　　者：舒焕麟[1] 

机构地区：[1]四川农业大学小麦研究所

出　　处：《西南农业学报》1998年第3期36-40,共5页Southwest China Journal of Agricultural Sciences

基　　金：四川省教委重点科研资助;四川省科委应用基础研究资助

摘　　要：六倍体小黑麦“冬／春”杂交组合“６７１３．１２／ＳＴＩＥＲ‘Ｓ’”Ｆ６代种子经６０ＣＯγ射线处理，在Ｍ２代分离出少数半矮秆突变体，其中３个半矮秆突变体系统在Ｍ４代分离出少数矮杆突变体，在Ｍ７代选育出７个矮秆突变体株系。这些突变体与原亲本“６７１３．１２／ＳＴＩＥＲ‘Ｓ’”Ｆ６在一些性状上有所不同，株高（７５ｃｍｖｓ．１２９ｃｍ）和育性（９２．３％ｖｓ．９０．５％）的差异尤其引人注意。这些矮杆突变体在六倍体小黑麦育种上的应用价值将由正在进行中的矮秆突变体的遗传分析和细胞学研究予以估计。F 6 seeds of a winter/spring triticale cross (6713.12/STIER“S”)were treated with doses of 25 and 30 krad gamma rays.Small number of semi dwarf mutants were isolated in the M 2, and a few dwarf mutants were found from 3 semi dwarf lines in the M 4.Seven lines of dwarf mutant were selected in the M 7.Significant differences between the mutants and F 6 of “6713 12/STIER‘S’ were noted for height(75 vs. 129cm),fertility (92 3 vs. 90 1%) and some other traits.It would be estimated that the utilization of these dwarf mutant lines to triticale breeding depend mostly on the genetic and cytological studies which are conducted at present.

关 键 词：小黑麦 Γ射线 突变体 矮秆 

分 类 号：S512.1[农业科学—作物学]