INFLUENCE OF GIBBERELLIC ACID AND N6-BENZYLADENINE ON THE DEVELOPMENT OF SEED AND BERRY QUALITY IN ‘PERLETTE’ SEEDLESS GRAPE

Gibberellins have been used to improve quality of grapes in several cases.
However, gibberellic acid (GA) alone is not enough to improve the quality in ‘Perlette’ grape.
A field experiment was conducted on 7-year-old ‘Perlette’ grape trained on T-trellis system, to investigate the effect of bunch dipping with GA₃ and N6-benzyladenine (BA) on reducing the problem of formed seed and improving the productivity of grapevines.
Our observation proved that the stage of application of GA₃ and BA is crucial to avoid seed formation in seedless cultivars for table grapes such as ‘Perlette’. The results showed that BA used at low concentration (10 µl L^-1) at the fruit set stage, reduced seed development of ‘Perlette’ grape.
Based on our study, we found that bunch dipping with 30 µl L^-1 GA₃ (at 50% of full bloom) and 10 µl L^-1 BA (at pea size) significantly reduced the seed formation and improved the yield and quality in ‘Perlette’ grape.
Additionally, GA₃ and BA affected the shape of berries.

International Symposium on Tropical and Subtropical Fruits

N. Chaitakhob, B. Janchean, N. Pilap, S. Methaneekornchai

malate, stenospermocarpy, anthocyanin, bunch dipping, T-trellis system

https://doi.org/10.17660/ActaHortic.2014.1024.24