【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。更多还原

【Abstract】 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,correlation 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. 004X1+ 0. 002X2- 0. 001X3,where X1,X2,and X3 represent the salt tolerance coefficient of the root dry weight,MDA,and POD,respectively.更多还原