Examining of symbiotic effects of Mycorrhiza (Glomus mosseae) with bread wheat (Triticum aestivum L.) Under drought stress conditions
Subject Areas : Tension
1 - Islamic Azad University, Science and Research Branch, Tehran
Keywords: Antioxidant enzymes, Drought stress, soluble carbohydrates, Bread wheat, Mycorrhiza,
Abstract :
In order to investigate the effect of the symbiosis of arbuscular mycorrhizal fungi and drought stress on the growth, yield, chlorophyll content and morphophysiological characteristics of Chamran wheat seedlings (Triticum aestivum L.), a research in the form of a factorial experiment in the form of a randomized complete block design and in four replications in 2016 It was carried out in the research laboratory of Islamic Azad University, Science and Research Unit, Tehran. The experimental factors included two levels of drought stress (agricultural capacity and 50% of agricultural capacity) and two levels of mycorrhizal inoculation (inoculation and no mycorrhizal inoculation). The evaluated traits included chlorophyll, carotenoid, flavonoid, anthocyanin, proline, soluble carbohydrate, membrane lipid peroxidation, phenol, total protein, catalase, and superoxide dismutase and ascorbate peroxidase enzymes. The results of variance analysis of the data showed a significant decrease in drought stress of photosynthetic pigments, flavonoids, anthocyanins and soluble sugars at the level of 1% and a significant increase in phenol, proline and total protein and a decrease in the content of malondialdehyde in wheat plants. Also, the studies revealed that the activities of catalase, superoxide dismutase and ascorbate peroxidase enzymes increased under drought stress. In general, the application of mycorrhizal treatment increased and improved the growth and promoted the activity of antioxidant enzymes. The result is that in water shortage conditions, the use of mycorrhizal fungi by creating changes in physiological processes and activating the antioxidant defense system and biochemical changes, gives the plant the possibility of better adaptation under dry conditions and the effective role of this fungus in increasing growth and resistance to stress. It means bread in the wheat plant.
