EFFECT OF GIBBERELLIC ACID ON PERIODICAL CHANGES IN BIO-CHEMICAL COMPOSITION OF BER CV. UMRAN

The present studies aimed at evaluating the effects of varying doses of GA3 on the bio-chemical changes of ber fruit during development. GA3 @ 10, 30 and 50 ppm was applied at fruit set stage and then super imposed one month thereafter. The periodical bio-chemical analyses of developing ber fruits revealed that total soluble solids concentration increases maximum during initial stages of fruit development i.e. between interval of 25 to 50 days of GA3 application while total sugars and ascorbic acid increase and acidity decreases as the fruit reaches maturity i.e. between 75 to 100 days of GA3 application. The GA3 50 ppm dose resulted in maximum expression of acidity, total sugars and ascorbic acid at final harvest of ber. Thus it is implicated that GA3 application is beneficial in improving flavour and taste of ber.