Plant Bioregulators to Check UnevenRipening of Coloured Grapes

Abstract

Uneven ripening in coloured grape cultivars is one of the signi ficant constraints in commercial grape cultivation, especially under semi-arid subtropical conditions. As evident from recent studies, plant bioregulators (ABA and ethylene) could produce uniformly coloured berries in India and may be a viable alternative to overcome the problem of uneven ripening of coloured grape varieties. Furthermore, since ethylene (Ethrel) is more affordable than abscisic acid, the study advocate using it to enhance the colour of grape berries in commercial viticulture.