STUDY OF PHENYLALANINE AMMONIA-LYASE ACTIVITY, ANTHOCYANIN AND FLAVONOID LEVELS AT DIFFERENT STAGES OF APPLE FRUIT DEVELOPMENT ON MOTHER TREE
Abstract
We report the phenylalanine ammonia-lyase (PAL) activity, anthocyanin and flavonoid levels at different stages of apple fruit (Malus domestica Borkh.) development on mother trees. We have observed a wide variation in the level of the PAL activity, anthocyanin and total flavonoid levels in different apple cultivars and at different stages of development. The curves showing the change in the PAL activity have two distinct peaks. The PAL activity was found to be the highest in immature fruit, dropped to low levels during development, and then rose upon ripening. We have found a significant correlation between the average PAL activity over the all developmental stages and the final concentration of total flavonoids; however, apparent correlation between the average PAL activity and final anthocyanin concentration has not been observed.
About the Authors
Севиндж Qulieva
Baku State University
Russian Federation
Russian Federation
S. . Gulahmadov
Baku State University
Russian Federation
Russian Federation
A. . Quliev
Baku State University
Russian Federation
Russian Federation
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