SEASONAL-VARIATION OF HYDROPHILIC, HYDROPHOBIC, AND CHARGED AMINO-ACIDS IN DEVELOPING APPLE FLOWER BUDS

An increase in polar amino acids especially in hydrophilic and charged amino acids and a decrease in hydrophobic amino acids were observed i n developing apple flower buds from July to November (beginning of dor mancy). This suggests that polar amino acids may play a role in dorman cy of apple flower buds similar to that of other polar substances. A 2 nd-degree polynomial was observed for hydrophilic, hydrophobic, and ch arged amino acid content, during growth and development.