ISHS Acta Horticulturae 175: Symposium on Physiology of Productivity of Subtropical and Tropical Tree Fruits
EFFECT OF NAPTHALENE ACETIC ACID, ETHREL, DIKEGULAC AND HAND DEBLOSSOMING ON FLORAL MALFORMATION, FLOWERING, YIELD AND FRUIT QUALITY OF MANGO (MANGIFERA INDICA L.) |
| Authors: | Z. Singh, B.S. Dhillon |
| Abstract:
The incidence of floral malformation was significantly reduced with NAA (200 ppm) followed by Ethrel (500 ppm) followed by NAA (200 ppm) followed by Dikegulac (3000 ppm) in two years. The treatment of NAA (200 ppm) followed by hand deblossoming was not better than alone NAA (200 ppm) at FBD in controlling malformation. The treatment with NAA (200 ppm) followed by Dikegulac (4500 ppm) significantly increased the percent hermaphrodite flowers in healthy panicles as compared to control, whereas NAA (200 ppm) followed by hand deblossoming resulted in the highest percentage of hermaphrodite flowers in malformed panicles during both the years. The yield was significantly increased with NAA (200 ppm) followed by Ethrel (500 ppm) followed by NAA (200 ppm) followed by Dikegulac (3000 ppm) treatment. There was direct negative relationship between yield and floral malformation. The fruit weight, pulp weight and stone weight were the highest with NAA (200 ppm) followed by Ethrel (500 ppm) compared to other treatments. The pulp/ stone ratio was high with NAA (200 ppm) followed by Dikegulac (6000 ppm) as compared to control during both the years of studies. The total soluble solids and TSS/acid ratio of fruit was significantly higher with NAA (200 ppm) followed by Dikegulac 750 ppm than control during two years. Total sugar content of the fruit was highest in NAA (200 ppm) followed by Ethrel (500 ppm) treatment than other treatments during 1982–83 and 1983–84. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
