ISHS Acta Horticulturae 108: International Cashew Symposium
EFFECT OF GIBBERELLIC ACID ON VARIATIONS IN FREE AMINO ACID AND TOTAL PROTEIN CONTENTS IN DEVELOPING KERNEL OF CASHEW |
| Authors: | M. HARIHARAN, K. UNNIKRISHNAN |
| Abstract:
Free amino acids and total protein contents have been studied in three different developmental stages of kernel in Anacardium occidentale L., after foliar treatment with 40 ppm and 50 ppm gibberellic acid. The effect of GA3 on free amino acid and protein contents vary according to the concentrations of the hormone used, but does not follow a uniform pattern. Tryptophane, leucine (s), aminobutyric acid, valine-methionine, glutamic acid, alanine, aspartic acid, glycine and cystine occur in assayable amounts in the early kernel. There is a marked reduction in the total amount of free amino acid as the fruit matures, and this decline is steeper in the treated category. GA3 treatment leads to qualitative and quantitative changes in the free amino acid: cystine, which is absent in the control kernels, occurs in significant concentration in the treated samples; and hydroxyproline though present only in traces in control, can no longer be detected in treated ones. The probable significance of the changing amino acid picture during kernel development in the treated and untreated plants is discussed. | |
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