Vegetos
(An International Journal of Plant Research & Biotechnology)
Impact of oryzalin on induction of polyploidy in Jasminum sambac (L.) Aiton
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Vishnupandi S., Ganga S., Manonmani S., Boopathi Manikanda, Swarnalatha P.
Research Articles | Published: 18 August, 2025
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Keywords: Polyploidy, Oryzalin, n Jasminum sambacn , Variations
Abstract
Oryzalin is a potential effective polyploidizing agent, which was employed in the present study for generating high-yielding, commercially viable polyploidy varieties of Jasminum sambac. Rooted cuttings of J. sambac were treated with 0.005%, 0.01%, and 0.05% oryzalin for 6 h under darkness. The survival rate of treated plants indicated that increasing oryzalin concentrations led to a corresponding decrease in survival percentage. The morphological and flowering traits of the treated plants were assessed after 150 days of treatment. The 0.05% oryzalin treatment reduced plant height (39.33 cm) and internodal length (3.46 cm) compared to the control, while increasing stem girth (6.03 mm), leaf area (17.63 cm2), and number of leaves per plant (48.20). The plants treated with 0.05% oryzalin also showed improved floral characteristics, such as flower bud length (2.54 cm) and flower bud girth (2.35 cm). These findings confirm that 0.05% oryzalin may effectively induces polyploidy in J. sambac, producing plants with superior floral characteristics, which hold promise for future breeding programs and the development of novel cultivars. However, further cytological confirmation of ploidy level is essential to validate the stability of the induced polyploids. Once confirmed, these improved lines can serve as valuable genetic resources for developing superior cultivars in future jasmine improvement programs.
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Author Information
Department of Agricultural and Horticultural Sciences, School of Agriculture and Food Technology, Vignan’s Foundation for Science, Technology and Research (Deemed to be University), Vadlamudi, India