大赖草染色体对小麦耐旱和耐盐性的效应研究  

Effect of chromosomes of Leymus racemosus on drought and salt tolerance in wheat

作　　者：朱玫[1] 温辉芹[1] 裴自友[1] 程天灵[1] 李雪[1] 张立生[1] ZHU Mei;WEN Huiqin;PEI Ziyou;CHENG Tianling;LI Xue;ZHANG Lisheng(Institute of Crop Sciences,Shanxi Academy of Agricultural Sciences/Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau,Ministry of Agriculture,Taiyuan 030031,China)

机构地区：[1]山西省农业科学院作物科学研究所/农业部黄土高原作物基因资源与种质创制重点实验室,山西太原030031

出　　处：《北方农业学报》2017年第3期1-5,共5页Journal of Northern Agriculture

基　　金：国家科技支撑计划项目(2013BAD04B03-04);山西省国际科技合作项目(2013081003);山西省重点研发计划(指南)项目(201603D221001-2);山西省农业科学院育种工程项目(16yzgc029)

摘　　要：了解大赖草染色体对小麦耐旱和耐盐性的效应,为进一步利用大赖草有益基因提供理论依据。利用20%PEG6000溶液和不同浓度Na Cl溶液对10份小麦-大赖草二体附加系、代换系和亲本中国春进行干旱和盐胁迫处理,调查萌发期相对芽长、盐害指数。结果表明:大赖草的耐旱和耐盐性受多条染色体控制。大赖草F、J、L和N染色体附加具有增加萌发期耐旱性的正向效应,依次为N>J>F>L,E染色体对干旱最敏感。大赖草E、F、I、J和N等5条染色体附加具有增加耐盐性的正向效应,250 mmol/L下I染色体附加正向效应最大。上述大赖草染色体附加系可用于小麦耐旱、耐盐性的改良。The effect of chromosomes of Leymus racemosus on drought and salt tolerance in wheat was understood to provide a theoretical basis for further utilization of beneficial genes.The relative shoot length,salt injury index of 10 wheat Leymus racemosus addition lines,substitution lines and their wheat background Chinese Spring were measured at the stage of germination under 20%PEG6000 and different concentration of NaCl.The results showed that the drought tolerance and salt tolerance might be controlled by several chromosomes of Leymus racemosus.Positive effect of Chromosome F,J,L and N on drought tolerance were found,the affect in following order:N>J>F>L and chromosome E was the most sensitive to drought.5 chromosomes of E,F,I,in J and N could increase salt tolerance and chromosome I had greatest positive effect on salt tolerance under 250 mmol/L.The Leymus racemosus chromosome addition lines mentioned above would be used in wheat breeding for improving drought and salt tolerance.

关 键 词：小麦 大赖草 异染色体系 萌发期 耐旱性 耐盐性 

分 类 号：S512.1[农业科学—作物学]