ISEEP-2017 VIII. Internatıonal Symposium on Ecology and Environmental Problems, Çanakkale, Türkiye, 4 - 07 Ekim 2017, ss.211
Chickpea, an economical plant worldwide, is adversely affected by drought stress. Magnesium (Mg) is an essential nutrient element for plants, and its deficiency reduces plant yield and chickpea yield associated with the correct selection of varieties. In our study, we focused on the independent and concurrent effect of Mg deficiency and drought on catalase (CAT) and peroxidase (POX) activities in drought-sensitive Akçin and –resistant Uzunlu varieties. Mg deficiency application was carried out by removing Mg from the Hoagland solution. Drought stress application was applied for 1 week in the form of water scarcity. The samples were carried out 14 d plants (0th day) and at the end of the experiment (7th day). At the end of the experiment, Mg deficiency decreased CAT activity in Akçin variety by 7% but did not change in Uzunlu. Drought stress reduced CAT activity by 66% in Akçin, while it increased by 3 times in Uzunlu. CAT activity decreased by 60% and 80% in both varieties with double stress treatment, respectively. POX activities were not changed in both varieties at the end of the experiment with Mg deficiency. It was found that increased 37% and 69% respectively by drought stress in both varieties. It was determined that POX activity increased two-fold in Akçin via double stress treatment and decreased by 70% in Uzunlu. Our results showed that drought-sensitive Akçin variety had effective POX activities against double stress compared with - resistant Uzunlu variety.