摘要
通过测定6个紫花苜蓿品种在高寒地区越冬率及越冬前后丙二醛(MDA)含量、超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)3种保护酶活性,比较其越冬前后变化与抗寒性的关系。结果表明,所测各指标变化规律均是随着气温的下降而上升,进入深冬又下降,翌年春季气温回升后,各指标又有所回升;其中MDA含量与越冬率成反比,3种抗氧化酶活性与越冬率成正比。综合各项指标结果表明,公农1号的抗寒性最强,美国品种WL319 HQ抗寒性最弱。
The study was conducted to compare relationship between content changes before and after of overwinte- ring and cold resistance by means of measuring contents of MDA content, SOD, CAT and POD activity of six alfalfa varieties in cold region. The results showed that change rules of index was firstly rising as temperature declined, and then declined when winter come, and after the temperature rise of the following spring, the index recovered again. In addition, overwintering rate and MDA content was inversely proportioned, and with three antioxidant enzymes activity was directly proportional. Comprehensive analysis showed that the strongest one for cold resistance was ＇ Gongnong NO. 1 ＇ and the weakest was ＇ WL319 HQ＇
出处
《作物杂志》
CAS
北大核心
2015年第4期88-91,共4页
Crops
基金
紫花苜蓿抗寒关键技术及机制研究(LBH-Z12239)
