Abstract
The purpose of this study was to assess how different indole butyric acid (IBA) concentrations (0, 300, 600, 900, and 1200 mg/L) affected the morphological characteristics of three distinct plum cultivars. The findings demonstrated that different plum cultivars responded differently to varying IBA concentrations. The findings showed that the application of IBA had a cultivar-specific effect. Red beauty sprouted the quickest at 600 mg/L (129.33 days), while Fazle manani and Santa rosa sprouted the quickest at 1200 mg/L concentrations of IBA (132.67 and 132 days, respectively). The highest plant heights were 600 mg/L in Fazle manani (93 cm), 300 mg/L in Santa rosa (124.37 cm), and 1200 mg/L in Red beauty (131 cm), in that order. The greatest number of branches at 900 mg/L in Fazle manani (14.73), 300 mg/L in Santa rosa (14.23), and 1200 mg/L in Red beauty (16.00), the highest number of branches per budding was noted. The percentage of bud sprouting varied by cultivar, with Santa rosa and Red beauty having the highest sprouting at 300 mg/L (48%) and 900 mg/L (50.33%), respectively, while Fazle manani had the lowest at 900 mg/L (24%), and the highest in the control at 52%. At 900 mg/L in Fazle manani (135), in control conditions for Santa rosa (136.83), and at 300 mg/L in Red beauty (136), the greatest number of leaves per budding was recorded. The peak budding diameters were 1200 mg/L in Fazle Manani (8.33 cm), 600 mg/L in Santa Rosa (9.13 cm), and 300 mg/L in Red Beauty (7.80 cm). At 300 mg/L in Fazle Manani (2.03 cm), 900 mg/L in Santa Rosa (2.00 cm), and both control and 600 mg/L in Red Beauty (2.00 cm), the internode bud length was at its maximum. These results show that IBA concentrations have a major impact on plum cultivar growth characteristics. The findings offer important information for maximizing the use of IBA in plum cultivation to boost propagation effectiveness and enhance overall plant development.