بررسی تغییرات صفات کمی در شرایط آبیاری عادی و تنش کمبود آب در لوبیا

For evaluation of water deficit stress effect on some quantitative traits, two separate experiments were conducted based on completely randomized design with three replications. One experiment with normal irrigation (every 5 days) in summer and another experiment were conducted in water deficit condition (every 10 days). In both experiments 12 genotypes of any of three colour type, white, pinto bean and red beans, were studied. Studied traits were: number of days until flowering, number of days until pod production, number of days until pod maturing, number of shoots in every inflorescence, height of bush, number of node in major stem. Number of pods per plant, length and width of pod, number of grain per pod, length, width and thickness of grains, number of grain per plant, weight of one hundred grain and yield per plant. Analyzing data for quantitative traits showed significant differences in both normal irrigation and water deficit condition (P <0.1), indicating a high level of genetic variation in the studied bean collection which could be applied in improving programs of common bean.
Keywords: Common bean, Quantitative traits, Water deficit stress.