ISHS Acta Horticulturae 701: XII International Symposium on Apricot Culture and Decline
THE RELATIONSHIP BETWEEN STOMATA DENSITY AND FRUIT QUALITY OF SOME APRICOT VARIETIES GROWING IN DIFFERENT ALTITUDES IN MALATYA PROVINCE |
| Authors: | H.A. Ölmez, B.E. Ak, R. Gülcan |
| Keywords: | Prunus armeniaca, fruit qualiy traits, photosynthesis |
| Abstract:
In this study, the variations of stomata numbers in leaves of apricots (Prunus armeniaca) were investigated in relation to the cultivars and the regions. The relationship between stomata number and fruit characteristics (fruit and stone weight, acidity and soluble solid percentage) has been investigated. In addition, whether stomata numbers vary according to the part of the leaves (basal, middle and distal parts) in which the stomatas were observed were evaluated. The samples of leaves and fruit were taken from 12-15 year old trees at the beginning of the harvest. For the counting of stomatas, the epidermis layer was pulled out by nail polish from the lower side of the leaf. Then, stomata were counted by using a microscope with a 10x40 magnification in 0.0625 mm2 area. The obtained values were calculated as stomata numbers per mm2. There was a positive and statistically significant correlation between fruit weight and stomata numbers, the correlation coefficiency (r) was found as 0.295 meaning that the more stomata numbers are, the more fruit weight is. There was similar correlation (r=0.194) between stone weight and stomata numbers, too. A negative but statistically non-significant correlation (r=0.127) was determined between stomata numbers and soluble solids percent. Available cultivars appropriate for drying process and fresh consumption were compared in three different regions and interestingly, the stomata numbers of the cultivars appropriate for drying process were found less than that for fresh consumption. The results of this investigation demonstrated that stomata numbers in leaves of apricot cultivars appropriate for drying process were different from that for fresh consumption. In addition, we showed a relationship between stomata numbers and fruit weight. These findings may be useful to shorten the necessary period for selection studies and to improve new cultivars. | |
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