Evaluation of Red Wine Grape Varieties for Growth and Yield Parameters in Semi-arid Condition of India

The study was carried out at the ICAR-National Research Centre for Grapes, Pune, during the 2022–2023 and 2023–2024 fruiting seasons. Among the red wine grape varieties, Cabernet Sauvignon demonstrated superior growth parameters, including pruned biomass (1.080 kg/vine). The variety Syrah exhibited the highest shoot length (120.44 cm), shoot diameter (9.75 mm), number of leaves per fruiting shoot (25.61), and number of bunches per vine (60.50). Grenache Noir showed the shortest time to bud sprout (8.93 days) and the highest number of berries per bunch (177.47), while Petit Syrah recorded the maximum internodal length (6.94 cm). The Caladoc variety displayed a higher number of leaves (24.42) and the largest leaf area per fruiting shoot (2931.25 cm²), whereas Nielluccio had the highest individual leaf area (141.25 cm²). Cabernet Franc clone had the highest chlorophyll content (13.52 mg/ml). Yield-related parameters highlighted Alicante Bouschet for its highest bunch weight (264.80 g) and yield (8.84 kg/vine and 10.70 MT/acre on a pooled mean basis), while Red Muscat had the highest 100-berry weight (221.94 g).