The total amino acids and free amino acids contents in the developing leaf of fluecured tobacco were studied- It was founded that the contents of total amino acids weredecreased with the leaf age increasing. Correlation analysis showed that there wassignificant correlation between the leaf age and total amino acids contents- The totalamino acids contents were the lowest in the ripening stage and incresed after flue-curing. With the leaf age increasing, the most amino acids components decreased, thedropping range of aspartic and glutamic was the highest and that of cysteine and trypto-phan was very small. The contents of total free amino acids in tobacco leaves changedmore complexly. But there was a tendency towards higher free amino acids contents inthe young leaf and the contents decreased apparently during leaf ripening.
Acta Tabacaria Sinica
Flue-cured tobacco Stalk position Leaf age Leaf development Total amino acids Free amino acids