干旱地区农业研究2017，Vol.35Issue(5)：236-241,262,7.DOI:10.7606/j.issn.1000-7601.2017.05.35
外源硫化氢对加工番茄种子耐盐性及抗氧化酶的影响
Effects of exogenous hydrogen sulfide on salt tolerance and antioxidant enzymes of processing tomato seeds
摘要
Abstract
The effects of exogenous hydrogen sulfide on the seed germination of processing tomato under salt stress were investigated.Seeds of two processing tomato cultivars KT-63(salt resistance is weak) and KT-18(stronger salt tolerance) were treatment with semi-lethal concentration of NaCl(85 mmol·L-1,120 mmol· L-1) and NaHS(0.2,0.4,0.6,1.0 mmol· L-1) mixture,respectively.The results showed that:With increasing NaHS level,the germination rate,germination energy,germination index,vigor index,SOD,POD and CAT activities first increased and then decreased.Compared with salt stress,treatments with 0.4 mmol· L-1 NaHS significantly increased seed germination rate,germination index,vigor index and the activities of SOD,POD and CAT in KT-63(70％,250％,120％,130％,6.7％,150％ and 180 ％,respectively) and KT-18 (50％,250 ％,60％,80 ％,4.3 ％,160％ and 200 ％,respectively),and the content of MDA was decreased.The mitigation effect of hydrogen sulfide on KT-63 is stronger than KT-18.Results provide evidence that 0.4 mmol· L-1 of H2S may alleviate damage to seeds caused by salt stress,expedition of seed germination.关键词
硫化氢/盐胁迫/加工番茄/种子萌发/抗氧化酶Key words
hydrogen sulfide/salt stress/processing tomato/seed germination/antioxidase分类
农业科技引用本文复制引用
郑州元,林海荣,崔辉梅..外源硫化氢对加工番茄种子耐盐性及抗氧化酶的影响[J].干旱地区农业研究,2017,35(5):236-241,262,7.基金项目
留学回国人员科技活动项目(2010LX005) （2010LX005）
