加工番茄幼苗期耐盐生理指标筛选及耐盐性综合评价  

Salt tolerance evaluation of processing tomato lines based on physiological traits at seedling stages

作　　者：彭玉梅[1] 石国亮[1] 崔辉梅[1] 

机构地区：[1]石河子大学农学院,新疆石河子832003

出　　处：《干旱地区农业研究》2014年第5期61-66,共6页Agricultural Research in the Arid Areas

基　　金：留学回国人员科技活动项目(2010LX005)

摘　　要：以7个加工番茄材料为试材,采用不同浓度的NaCl溶液人工模拟盐胁迫,对13项指标的耐盐系数进行主成份分析、相关分析、隶属函数法和逐步回归分析,对幼苗期加工番茄耐盐性进行检验,结果表明:根据耐盐综合评价值(D)得出材料耐盐性排序:KT-55>KT-25>KT-63>KT-16>KT-40>KT-18>KT-70,筛选出根干重、丙二醛、过氧化物酶3个加工番茄幼苗期耐盐性评价指标;7个材料的耐盐预测最优方程:D=-0.129+0.004X1+0.002X2-0.001X3,其中X1、X2、X3分别代表根干重、丙二醛、过氧化物酶为指标的耐盐系数。In this study,seven processing tomato lines were used and simulated salt stress by NaCl was performed . Thirteen indexes regarding salt tolerance of processing tomato seedling were studied by principal component analysis,cor-relation analysis,subordinative function,and stepwise regression analysis .The results showed that salt tolerance of seven processing tomatoes had an order of KT-55〉KT-25〉KT-63〉KT-16〉KT-40〉KT-18〉KT-70 .Root dry weight,MDA,POD were important for salt tolerance .The optimal prediction equation was：D=-0 .129＋0 .004 X1＋0.002X2-0.001X3,where X1,X2,and X3 represent the salt tolerance coefficient of the root dry weight,MDA,and POD,respectively .

关 键 词：加工番茄 NACL胁迫 耐盐性 综合评价 预测 

分 类 号：S603.4[农业科学—园艺学]