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Drought and changes in weather conditions, cause damage and reduce their agricultural products. The fact that durum wheat, after common wheat or Simultaneous with that, is one of the major sources of food supplies, makes it a necessity to identify its drought tolerant species.This article reports an experiment on the impact of different levels of drought ( 5,10,20, 25 percent of field capacity) on activity of antioxidant enzymes, including Catalase (CAT), Poly phenol oxidase (PPO), Ascorbate peroxidase (APX), Guaiacol peroxidase (GPX), and also some photosynthetic pigments ( Chlorophylls a, b, total Chlorophyll and Carotenoid ), as well as some osmosic regulators include Carbohydrates and Proline in durum wheat genotypes (Shabrang, Behrang, Karkhe, Aria, Dena ). This experiment was designed as a factorial randomized blocks with three repeats, conducted at the Institute for Biotechnological Research in the University of Zabol. Following planting the seeds in pots, the drought stress was introduced at the tillering stage, after which the attributes of the plants were measured. The results of analysis of variance demonstrated that the impact of genotype, drought stress, and the interaction of stress and drought were statistically significant at 1 percent and 5 percent in all the attributes under investigation. The impact of genotype and drought stress on polyphenol oxidase trait was not significant. The most significant effects observed were those of 5 percent watering level of the capacity on antioxidant activity and osmos regulator. The results of this study indicated that in the conditions of this experiment, Behrang and Karkheh genotypes determined the highest level of photosentises pigments and Shabrang genotype have most level of antioxidant activity and Karkheh genotype have highest level of proline and carbohydrate contain, identifying it as a drought tolerant species.

pizhūhishnāmah-i iṣlāḥ-i giyāhān-i zirā̒ī.

The Impact of Drought Stress on Antioxidant Enzymes Activities, Containing of Proline and Carbohydrate in Some Genotypes of Durum Wheat (Triticum turgidu L.) at Seedling Stage