ISHS Acta Horticulturae 179: V International Symposium on Growth Regulators in Fruit Production
BIO-REGULATION OF DEVELOPMENTAL PROCESSES AND SUBSEQUENT HANDLING OF KINNOW MANDARIN |
| Author: | B.S. Dhillon |
| Abstract:
The mandarin hybrid 'Kinnow' has recently gained recognition for its attributes. Its fruit matures following a single sigmoid curve formulated from size and weight. A rapid increase in carotenoids in the peel becomes evident by end November when fruit attains its full size and volume. The level of chlorophyll a and chlorophyll b decreases by this time. A sudden increase was found in the total soluble solids from end November which continued for two months. The auxin content in the seed and pulp increased from November, 34 weeks after fruit set till just before harvest. Other growth factors namely cytokinins, gibberellins and abscisic acid decreased during later stages of fruit development, although the decrease in the abscisic acid was less abrupt in the pulp. Calcium as chloride and nitrate was applied before and after harvesting the fruit. It reduced weight loss when applied two weeks before harvest whereas it maintained higher juice content and retained higher total soluble solids during storage when applied one week before harvest. The activity of pectin methyl estrase and peroxidase enzymes was reduced which was further decreased during storage after calcium treatment. Storage for 40 days was the best. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
