Evaluation of grape genotypes for early ripening and total soluble solid content

Abstract

Forty-seven grape genotypes were evaluated under subtropical climatic conditions of Delhi, India from 2014-16. All the genotypes were mainly grouped under two categories i.e., seeded and seedless. Each category was further categorized in to white and coloured. These genotypes were consisted of mainly Vitis vinifera L. The data were recorded for full bloom, berry ripening, total soluble solids and titratable acidity. The genotype ‘ER-R2P36’ came in to full bloom earliest. The maximum content of TSS was found in genotype ‘ER-R2P36’, ‘Hy. 76-1’, ‘16/2A-R1P5’ which were also ripened early. The least amount of titratable acidity was recorded in was recorded in two genotypes Perlette and Flame Seedless. The maximum TSS/TA ratio was recorded in genotypes ‘Hy. 76-1’, ‘ER-R2P36’, ‘Perlette.