Abstract:

In this study, the effects of UV-B rays on seedling growth and quality in tomato, cucumber and eggplant seedlings were investigated. For this purpose, control seedlings of tomato (Solanum lycopersicum L. cv. Alsancak-RN F1), cucumber (Cucumis sativus L. cv. Çakır F1) and eggplant (Solanum melongena L. cv. Anamur F1) (0 kJ m-2 day-1) ), 10.8 kJ m-2 day-1 (low dose) and 16.2 kJ m-2 day-1 (high dose) UV-B irradiation for 10 days (76.5 min day-1 and 114.75 min, respectively) from the time they first appear on true leaves. day-1) period. In the study, seedling height, number of leaves, root collar diameter, root length, root and upper part fresh and dry weights, leaf area, chlorophyll amount in the leaf and leaf color were determined. The amount of chlorophyll in the tomato fide leaves increased in low-dose UV-B radiation, while high-dose UV-B radiation was reduced. High-dose UV-B radiation application has been determined to increase the amount of dry substance in the fide roots. The amount of chlorophyll in the leaves is increased in low-dose UV-B application. The number of leaves and the area of leaves in the fries increased in low-dose UV-B application, while high-dose UV-B application decreased. The root throat diameter, root length and the amount of dry substance in the upper edge are found to be reduced in high dose UV-B application. The low-dose UV-B infusion has been found to reduce the color of the leaf chroma (C*) value. It was determined that UV-B applications had a reducing effect on leaf color L* value, root collar diameter and leaf area in eggplant seedlings. It has been determined that UV-B rays have an effect on the development and morphological structure of the seedlings depending on the species and dose.

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Abstract:

The aim of the study was to investigate the effects of UV-B irradiation on development and quality of tomato, cucumber and eggplant seedlings. Tomato (Solanum lycopersicum L. cv. Alsancak-RN), cucumber (Cucumis sativus L. cv) and eggplant (Solanum melongena L. cv.) seedlings were subjected to UV-B irradiation 0 kJ m-2 day-1, 10.8 kJ m-2 day-1 and 16.2      kJ m-2 day-1 for 10 days (76.5 min day-1-114.75 min day-1) when they reached to the first true leaves stage. In this research, seedling length, number of leaves, root coolar diameter, root length, root and upper age and dry weights, leaf area, chlorophyll content in leaf and color measurement values were determined. The content of chlorophyll in the tomato seedling was increased in low dose UV-B application and decreased at 16.2 kJ m-2 day-1 UV-B irradiation. It was determined that high dose UV-B irradiation caused an increase in the amount of dry matter in the root. Chlorophyll amount in cucumber seedlings increased in low dose UV-B application. Leaf number and leaf area increased in low dose UV-B application, decreased in high dose UV-B application. Decrease was observed on the root coolar diameter, root length, upper plant part dry matter with UV-B irradiations. Low dose UV-B applied eggplant seedlings decreased choroma value. It has been determined that UV-B applications reduce L* color value, root collar diameter and leaf area in eggplant seedlings. UV-B irradiation caused plant development and morphological changes on the seedling depending on the dose and plant species.