水分胁迫对不同基因型小黑麦和黑麦苗期生理特性的影响  

Effects of Water Stress on Physiological Characteristics of Different Genotypes of Triticale and Rye Seedlings

作　　者：白丽荣[1] 时丽冉[1] 郭晓丽[1] 张晓娜[1] 

机构地区：[1]衡水学院生命科学系,河北衡水053000

出　　处：《作物杂志》2016年第4期118-122,共5页Crops

基　　金：河北省高等学校科学研究计划项目(Z2014014);河北省科技计划项目(13222906)

摘　　要：用20%聚乙二醇6000模拟干旱,对8个小黑麦品种和1个黑麦品种进行水分胁迫,研究水分胁迫对这些材料生理特性的影响。结果表明,水分胁迫使所选品种鲜重均降低,丙二醛(MDA)、脯氨酸(Pro)及可溶性糖含量上升;冀饲2号、中新830、冬牧70、中饲237的可溶性蛋白含量上升,NTH1048、NTH1888、中饲828、劲松49的降低。抗氧化酶中超氧化物歧化酶(SOD)活性增高,而过氧化物酶(POD)、过氧化氢酶(CAT)活性表现为有的品种升高,有的品种降低。经隶属函数综合分析,9个品种抗旱能力顺序为:中新830>中饲237>冀饲2号>冬牧70>中饲828>NTH1048>冀饲1号>劲松49>NTH1888。Eight varieties of triticale and one rye cultivars were treated with 20% polyethylene glycol 6000 simulated drought stress, and then seedling fresh weight, MDA content, organic osmoregulation substance such as proline, soluble sugar, soluble protein contents and three antioxidant enzymes（SOD, POD, CAT） activity were determined. The results showed that the seedling fresh weight of all varieties decreased, MDA content increased, proline content and soluble sugar content increased with water stress. But the soluble protein contents rised in some varieties（Jisi 2, Zhongxin 830, Dongmu 70, Zhongsi 237）, while reduced in some other varieties（NTH1048, NTH1888, Zhongs828, Jinsong 49）. The activity of SOD were increased, and the changes of activities of POD, CAT were different in all the 9 varieties. After a comprehensive analysis of the membership function, the drought resistance order of 9 varieties was as follows： Zhongxin 830Zhongsi 237〉Jisi 2〉Jisi 1〉Dongmu 70〉Zhongsi 828NTH1048Jinsong 49NTH1888.

关 键 词：水分胁迫 小黑麦 黑麦 有机渗透调节物质 抗氧化酶 隶属度 

分 类 号：S512.4[农业科学—作物学] S512.5