Some vinifera varieties comparison of stoma specifications with two different methods and determination of chlorophyl contents

The present study was conducted with 28 local grape cultivars grown on their own roots in Hizan (Bitlis) in the year 2017. The aim of this research was to determine stoma densities and sizes in leaves which was in sunligth and in shade of grape varieties by using Nail Polish Method and Transparented Leaf Method beside to determine amount of chlorophyll by using SPAD method and Spectrophotometer method. The difference between the stoma numbers in leaves which was in sunligth and in shade of same variety was found statistically significant (p< 0.05). Stoma numbers of 16 grape varieties in Transpared Leaf Method were higer according to Nail Polish Method According to both methods, stoma density of leaves which was in sunlight of all grape varieties were higer. It has been determined that the difference between stoma densities of leaves which was in sunligth and in shade of grape varieties is important. In the studied cultivars, a significant regeneration was found between chlorophyll a and b, as well as between total chlorophyll and karatenoid. The highest SPAD values were obtained from the varieties of Resha Aliya [40.62 (shadow); 45.78 (sun)] and Güzane-2 [40.02 (shadow); 45.18 (sun)], while the lowest value was obtained from the Binetati-2 variety [22.32 (shadow); 27.48 (sun)]. Regression (R2 = 1) was found among the leaves which was in sunligth and in shade. Keywords: Grapevariety, Stomataldensity, SPAD, Chlorophyll