نوع مقاله : مقاله پژوهشی
نویسندگان
گروه علوم باغبانی، دانشکده کشاورزی، دانشگاه شهید چمران اهواز، اهواز ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Drought stress is one of the abiotic stresses that has adverse effects on the growth process of plants such as citrus fruits. One of the most effective substances in reducing and modulating drought stress on plants is the use of polyamines. Polyamines (putrescine, spermine and spermidine) are a type of nitrogenous growth regulator that are present in all living organisms.For this purpose, an experiment to investigate the effect of different levels of putrescine (0, 0.5, 1 and 2 mM) and different levels of irrigation (100, 75 and 50% of transpiration potential) in the form of repeated measurements in the form of randomized complete blocks design. It was done with 3 repetitions during 2018-2019 in the greenhouse of the Faculty of Agriculture of Shahid Chamran University, Ahvaz. The obtained results showed that drought stress at the levels of 50 and 75% evaporation and transpiration significantly increased the amount of proline, total soluble carbohydrate, malondialdehyde, protein and peroxidase enzyme activity and decreased chlorophyll. The use of putrescine with concentrations of 1 and 2 mM along with full irrigation increased the amount of chlorophyll, proline, total soluble carbohydrate, protein and peroxidase enzyme activity and decreased the amount of malondialdehyde. In general, the results showed that the use of polyamines lead to Improving the biochemical characteristics and increasing the resistance of lime seedlings to drought stress.
کلیدواژهها [English]
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