تقييم أداء استقرارية أصناف من اللوبياء المدخلة تحت ظروف بيئية مختلفة

Abstract

An experiment was carried out at the Baiji Research Station the College of Agriculture, Tikrit University, in the Summer Agricultural Season 2017,The target of test genotype environment interaction for characters:100 seed weight traits, the number of seeds by the pod, the number of pod in the plant, Total seed yield and Percent of protein, of the varieties of Cowpea (Riyadh f1, Apollo, Pop Friend, and Modesto), which planted at six environments resulting from combination between three planting dates (15 April, 1 May and 15 May 2017) and two distance to agriculture (30 and 40 cm) between plants and using randomized complete block design with three replications. It was shown from analysis of variance that mean square of both genotypes and planting dates was significant for all characters, As for the distance of agriculture and interaction between of planting dates and the distance of agriculture was not significant for all characters except Percent of protein, and for the genotypes × planting dates interaction was significant except at seeds by the pod, and for the genotypes × the distances and for the genotypes × planting dates × the distances was not significant except at Total seed yield and Percent of protein, The results of stability parameters showed that the varieties Riyadh f1, Bayader and Modesto were stable and fit for different environments for most characters, and some varieties were respond to a good environment for specific environments, the varieties Pop Friend and Apollo Their stability cannot be predicted.