Tailoring Indole-3-Butyric Acid Concentrations for Effective Grape Cultivar Propagation: Insights from Cutting Studies

Author(s) : Waqar Ullah1, Muhammad Imtiaz1,5* , Fazal Jalal2, Raza Ullah2, Mohammad Abbas, Shahab Ali shah, Ahmad Saleem, Rafiq Ahmad, Fazal Said, Muhammad Ali Khan, Sayed Hussain

Digital object identifier:

https://doi.org/10.52587/JAF060201

Abstract:

Grapes (Vitis vinifera) are woody perennials propagated mainly via cuttings, with berries that can be green, pink, golden, black, red, or purple. In this study, we investigated the effect of Indole-3-Butyric Acid (IBA) concentrations on the propagation of grape cultivars using cuttings in the monsoon season under greenhouse conditions. The experiment was designed as a Completely Randomized Design (CRD) with each treatment replicated three times. The medium used was solarized sand, free from pathogens and weed seeds. Cuttings, 6–8 inches long and from three grape cultivars (“King’s Ruby”, “NARC Black”, and “Flame Seedless”), were treated with 0 (control), 2000, 3000, and 4000 ppm IBA concentrations. Various parameters were measured, such as the number of leaves per cutting, shoot length, rooting percentage, and survival percentage. The data showed a significant effect of IBA concentrations (p<0.05). “King’s Ruby” showed the highest number of leaves and roots per cutting at 4000 ppm IBA, while “Flame Seedless” responded with the most extended shoot and root length at 2000 ppm IBA. Interestingly, “Flame Seedless” without IBA application had the best shoot diameter, rooting percentage, and survival rate. These results suggest that grape cultivars respond differently to IBA concentrations.