Year: 2026
Type: article
Abstract: Mango productivity is heavily dependent on the physiological transition from vegetative to reproductive growth, yet the integrated role of rootstock-mediated hormonal crosstalk in regulating these reproductive traits remains poorly understood. This study evaluated hormonal profiles and reproductive traits in regular-bearing ‘Amrapali’ and alternate-bearing ‘Dashehari’ grafted onto four rootstocks. Eight scion–rootstock combinations were evaluated with three biological replicates each. Leaf and bud concentrations of indole-3-acetic acid (IAA), gibberellic acid (GA 3 ), zeatin and abscisic acid (ABA) were quantified using high-performance liquid chromatography, alongside assessments of flowering traits. Hormonal concentrations exhibited scion × rootstock × tissue interactions, with Kurukkan-associated bud IAA exceeding leaf concentrations in Amrapali (10.37 versus 4.92 ng g⁻ 1 ) and Dashehari (9.93 versus 1.40 ng g⁻ 1 ). Bud GA₃ also exceeded leaf concentrations under Kurukkan in both cultivars, whereas ABA showed contrasting tissue distributions. Amrapali/Olour produced the highest total flower number (1,077.33 per panicle), whereas Amrapali/PAM-2 exhibited the greatest hermaphrodite flower number (372.67 per panicle) and proportion (38.78%). Exploratory correlations associated bud zeatin with male flower number in Amrapali (r = 0.963, P = 0.037) and bud ABA with panicle length in Dashehari (r = 0.962, P = 0.038). These findings indicate rootstock-associated hormonal and reproductive variation without establishing causal relationships.
Source: Scientific Reports
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: gold
Estimated APC paid: $2,690
OpenAlex ID: W7225426484