ISHS Acta Horticulturae 662: VII International Symposium on Temperate Zone Fruits in the Tropics and Subtropics
EFFECT OF GROWTH REGULATORS ON PRE-HARVEST FRUIT DROP IN SUBTROPICAL PLUM CV. SATLUJ PURPLE |
| Authors: | H. Kaur, J.S. Randhawa, G.S. Kaundal |
| Keywords: | plum, Satluj Purple, auxin, gibberellin, fruit drop |
| Abstract:
Growth regulators were tried to check the fruit drop in Satluj Purple (Prunus salicina Lindl), a self-incompatible cultivar of plum. GA3 at 20 and 50 ppm, NAA at 10 and 20 ppm, 2,4-D at 4 and 8 ppm and 2,4,5-T at 10 and 20 ppm were sprayed two weeks after pit hardening of the fruits. Minimum fruit drop was recorded in 2,4,5-T at 20 ppm (29.9%) followed by 2,4,5-T at 10 ppm (33.5%) and NAA at 20 ppm (39.6%), in comparison to control (56.7%). All growth regulator treatments resulted in decrease in acid content and increase in TSS/acid ratio of the fruit. Total soluble solids were maximum in GA 50 ppm sprays. | |
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