摘要
本实验用不同浓度乙烯利及乙烯受体抑制剂1-MCP处理番茄果实,通过对相关抗冷指标的检测,来揭示乙烯对于果实抗冷性的影响。结果显示,当乙烯利浓度为0.04%时,能够提高番茄果实游离脯氨酸含量,细胞持水能力,并抑制MDA的大量积累和电解质渗透率的升高,对细胞膜膜脂过氧化的发生起到一定的抑制作用,从而诱导番茄果实抗冷性的提高。而1-MCP则会加重冷害的发生。说明内源乙烯对提高果实抗冷性有积极作用,且适当浓度的外源乙烯能够加强这种作用。
Tomato fruits treated by different concentrations ethephon and 1-MCP were measured to reveal cold tolerance of tomato fruits induced by ethylene. The results indicated that when exogenous ethephon concentration is 0.04%, free proline content and cell water-holding capacity increase, but MDA content, relative ratio of electrolyte leakage and cell membrane lipid peroxidation decrease. 1-MCP treatment shows different effects. It is concluded that ethylene can improve cold tolerance, but 1-MCP can accelerate development of chilling injury. Endogenous ethephon can improve cold tolerance of tomato, which can be intensified by exogenous ethylene with suitable concentration.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2008年第7期466-469,共4页
Food Science
基金
国家自然基金项目(30671471
30571296)
中澳合作ACIAR项目(PHT/1999/081)
