Dicamba和2,4-D处理对小麦与玉米杂交得胚率的影响  

Effects of Dicamba and 2,4-D on Haploid Embryo Production in Wheat and Maize Cross

作　　者：赵翠荣[1,2] 刘莹[1] 唐清[1] 陈新民[3] 余华强[1] 

机构地区：[1]襄阳市农业科学院,湖北襄阳441057 [2]主要粮食作物产业化湖北省协同创新中心,湖北荆州434023 [3]中国农业科学院作物科学研究所,北京100081

出　　处：《作物杂志》2015年第5期46-49,共4页Crops

基　　金：主要粮食作物产业化湖北省协同创新中心资助项目;湖北省小麦工程技术研究中心资助项目;湖北省农业科技创新中心资助项目(2011-620-001-03)

摘　　要：设置生长调节剂Dicamba和2,4-D不同浓度混合液共6种处理,研究Dicamba和2,4-D对5个小麦基因型与玉米杂交得胚率的影响。结果表明,生长调节剂处理间、小麦基因型间以及二者之间互作均显著影响小麦与玉米杂交得胚率。单独使用100mg/L 2,4-D的得胚率最高(26.2%),极显著高于25mg/L 2,4-D+75mg/L Dicamba处理的得胚率(19.9%)和50mg/L 2,4-D+50mg/L Dicamba混合处理的得胚率(20.0%)。其余3种混合型生长调节剂处理间得胚率差异不显著。襄麦56平均得胚率最高,显著高于扬麦158、郑麦9023和组合C173,其次为襄麦25。同一小麦基因型不同生长调节剂处理的得胚率及同一生长调节剂处理不同小麦品种间得胚率均存在差异。To test the effects of different plant growth regulators on haploid embryo production in wheat and maize cross, five wheat varieties and six plant growth regulators were selected in the study. Significant or very significant variations were observed among wheat genotypes, plant growth regulators and the interaction between wheat material and plant growth regulator, as indicated by frequencies of wheat haploid induction. Among all the six hormone treatments,2,4-D at 100mg/L yielded the highest frequency （26.2%） of haploid embryo production, which was very significantly superior to treatment with 2,4-D 25mg/L ＋ Dicamba 75mg/L （ 19.9% ） and treatment with 2,4-D 50mg/L ＋ Dicamba 50mg/L （20.0%） ; No significant difference was noted among the other three treatments with mixed hormones. Xiangmai 56 had the highest frequency of haploid embryo production, followed by Xiangmai 25, which was significantly higher than that of Yangmai 158 ,Zhenmai 9023, and C173. The haploid embryo production of a same wheat genotype treated by varied levels of hormone treatment and that of a same level of hormone treatment worked on different wheat genotypes were different.

关 键 词：DICAMBA 2 4-D 植物生长调节剂 小麦与玉米杂交 单倍体胚 

分 类 号：S512.1[农业科学—作物学] S513