Özet:

This study was carried out to examine the effects of different irrigation intervals applied to the Gemlik olive variety grown in Şanlıurfa, which has semi-arid climate conditions, on some characteristics of the leaf stomata. For this purpose, leaf samples taken at harvest time from 12-year-old Gemlik olive variety trees irrigated at different intervals (control, 7, 14, 21, 28, and 35 days) were used as plant material. Leaf samples were taken from the top, middle and basal parts of the shoots, and the changes in stomatal characteristics were also examined depending on the location of the leaves on the shoot. The analyses show that irrigation intervals were made significant differences in stoma density, stoma size, stoma area, stoma shape coefficient, relative stoma area, and potential conductivity index. Irrigation interval with the highest stomatal density was determined as 35 days (413.05 stoma mm-2), and the lowest irrigation interval was determined as 28 days (365.75 stoma mm-2). We show that the stomatal density generally increased with the increase of the irrigation interval, whereas the stomatal length and stomatal area decreased. The stomatal characteristics were changed according to the position of the leaves on the shoot, but this was more clearly in stomatal sizes. It was determined that the leaves at the top of the shoot have smaller stomata than the leaves in the middle and lower parts. It was determined that there was a strong relationship between stoma width and stoma length.

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