NaCl胁迫时间对樱桃番茄幼苗保护酶系的影响

The Effects of NaCl Stress of Different Time on Protective Enzyme System of Cherry Tomato Seedlings

盐害是樱桃番茄(Lycopersicon esculentun var.cerasiforme A lef.)设施栽培中面临的主要问题之一。为给樱桃番茄抗盐育种提供参考,以耐盐性差异显著的两个品种京丹5号和小圆枣为试材,研究不同的NaCl胁迫时间对樱桃番茄幼苗保护酶系的影响。结果表明,204 mmol/L的NaCl胁迫15 d时,CAT(过氧化氢酶)酶活和POD(过氧化物酶)酶活差异最大,可作为樱桃番茄耐盐品种的筛选指标。

Salt injury is one of the prominent problems suffered in protected farming of cherry tomatoes.In order to provide salt-resistance breeding in protected farming of cherry tomatoes with theoretical basis and references,using the two varieties ＂Jingdan5＂ and ＂Xiaoyuanzao＂ as materials,the effects of NaCl stress of different time on protective enzyme system of cherry tomatoes seedlings were studied.Its main results were as follows,after the two varieties were stressed under NaCl of 204 mmol / L for 15 days,the rangeabilities of POD and CAT activity in cherry tomato seedling leaves were different greatly.So they could be adopted as the select index of salt-resistance.