EFFECT OF GROWTH REGULATOR TREATMENTS ON QUALITY AND GROWTH IN ‘GAILIANGMERU’ GRAPE (VITIS SPP.)

This study was conducted to investigate the effect of growth regulators to improve fruit set and produce seedless fruit of ‘Gailiangmeru’ grape (<i<Vitis spp.). Gibberellin (GA₃) was applied at 0, 50, 100 and 200 mg/L at both 7 days before bloom and 7 days after full bloom, or both at full bloom and 7 days later.
One spray of Fulmet (Forchlorfenuron 0.1%) was applied at 0, 5, 10, 15 mg/L at 5, 10 or 15 days after bloom.
Mepiquat (Mepiquat chloride 44%) was also applied at 0.7, 1, 2 mg/L at the time of 5, 7, 10 leaves, respectively.
GA₃ treatment of 100 mg/L at 7 days before blooming and 7 days after full blooming resulted in the heaviest berry and the highest seedless berry rate (79%). Treatment with 10 mg/L Fulmet had no significant effect on fruit number per tree, berry number per cluster, and berry setting rate, but increased cluster weight by approximately 10 g.
Treatment with 1 mg/L of Mepiquat increased berry setting rate by 3 to 11%.

XXVII International Horticultural Congress – IHC2006: International Symposium on Enhancing Economic and Environmental Sustainability of Fruit Production in a Global Economy

Hyung Gook Kim, Dong Geun Choi, In-Kyu Kang

gibberellin, forchlorfenuron, mepiquat chloride, seedless berry

https://doi.org/10.17660/ActaHortic.2008.772.53