ارتباط فعالیت آنزیم‌های سوپراکسید دیسموتاز و کاتالاز با صفات عملکرد و اجزای عملکرد در لوبیا تحت تنش کمبود آبیاری

Abstract:
For evaluation of water deficit stress effect on activity of antioxidant enzymes and some quantitative traits and their relationships, two separate experiments were conducted based on completely randomized design with three replications, in 2012. One experiment with normal irrigation in summer (every 5 days) and another experiment were conducted in water deficit condition (every 10 days). In both experiments 12 genotypes of any three color type, white, pinto bean and red beans, were studied. Studied traits were: Number of pod, number grain per pod, weight of one hundred seed and grain yield per plant. Activity of catalase enzyme (CAT) and superoxide dismutase (SOD) was studied in leaf samples of at least three plants collected form farm by horizontal acrylamide 8% gels. In normal condition, activity of CAT showed significant and positive correlation with weight of hundred seeds, activity of SOD3 showed significant and positive correlation with number grain per pod. In water deficit stress condition, activity of CAT showed significant and negative correlation with number of pod per plant, activity of isozyme SOD1 showed significant and positive correlation with weight of hundred seed and activity of SOD3 showed significant and positive correlation with seed yield per plant.