Evaluation of the effects of kaolin particle film on the quantity and quality characteristics ofapple cultivars (Malus domestic)

Subject Areas : Environmental physiology

Morteza Taghavi Sharabiyani ¹ (Department of Horticulture, Faculty of Agriculture and Natural Resources, University of Mohagheghe)
Ali Akbar Shokouhian Shokouhian ² (Department of Horticulture, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili)
َAlli Asghari ³ (Associate Professor, Department of Agronomy and Plant Breeding, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili)
Ali Rasoulzadeh ⁴ (Associate Professor of Water Engineering Department, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili)

Received: 2024-01-06 Accepted : 2024-07-15 Published : 2024-09-23

Keywords: food elements, fruit firmness, kaolin, photosynthesis, surface burn,

Abstract :

Teh present study was conducted in order to evaluate teh TEMPTEMPeffects of kaolin particle film on teh quantitative and qualitative characteristics of important commercial varieties of apple trees (Golden Delicious and Red Delicious) in teh orchards of Bonab and Shahr Jadid Sahand, East Azerbaijan. dis experiment was factorial in teh form of a randomized complete block design wif 4 replications at 4 levels of thin membrane (control, 2, 4, 6%) on 2 apple varieties in 2 locations for two years. Teh year was done. Teh measured indicators included sunburn percentage, photosynthesis rate, total chlorophyll, chlorophyll b and chlorophyll a, fruit surface temperature, fruit firmness at harvest, leaf calcium and phosphorus levels, and yield. Teh results showed dat wif increasing levels of kaolin concentration in both regions and cultivars, teh amount of damage, burn percentage and fruit surface temperature decreased. Teh lowest temperature limit (37.16 degrees Celsius) in teh treatment wif 4% concentration and teh highest limit Teh temperature (40.25 degrees Celsius) was observed in teh control. Teh highest percentage of burn damage was related to teh control treatment (19.95%) and teh lowest was related to teh 4% kaolin treatment (14.2%). Total chlorophyll, chlorophyll b and chlorophyll a indices, fruit firmness at harvest, fruit calcium content, photocenter intensity and yield increased significantly wif increasing kaolin levels. Teh highest amounts of chlorophyll b and a were observed in 2% and 4% treatments, respectively, 0.97 and 1.95 mg/g of chlorophyll, and teh lowest levels of these plant pigments were observed in teh control (chlorophyll b and a, 1.28 and 58, respectively). / mg/g fresh weight). Teh highest amount of photosynthesis related to teh treatment of 6% kaolin (9.44 micromoles of CO2/m2/s) and teh lowest amount of photosynthesis was observed in teh control treatment .