https://dzarc.com/phytology <p><strong>International Journal of Phytology Research (IJPR)</strong> is a peer-reviewed, open-access journal publishing high-quality research in plant and agricultural sciences. It offers a global platform for scholars and professionals to share innovative findings across Agronomy, Botany, Horticulture, Forestry, Plant Biotechnology, Phytochemistry, Pharmacognosy, and related fields.</p> Dzarc Publications en-US International Journal of Phytology Research 2583-0635 https://dzarc.com/phytology/article/view/801 <p>Tuberose (<em>Polianthes tuberosa</em> Linn.) is one of the most important flower crops grown under the tropical and subtropical conditions in India. The crop is affected by leaf spot disease caused by <em>Alternaria polianthi</em>, which significantly impacts its growth and flower yield. The disease is prevalent in both single and double varieties, especially in the regions with high rainfall and humidity. A study was conducted with gamma ray irradiated bulbs using 44 variants of mutant population with one untreated bulb (Control). Among the variants of mutant population studied in the VM₂ generation, mutant M₃₃₃ exhibited significantly highest per cent disease index (susceptible) compared to untreated control. No incidence of disease was noticed with mutants<em> viz.,</em> M_473C, M₁₇₈ and M_21, hence these were characterized as immune mutants to the leaf spot disease caused by <em>Alternaria polianthi</em>.</p> Manukonda Vasantha Ratna Vadlamudi Vijaya Bhaskar Yeturi Sirisha Kode Swarajyalakshmi Mudduluru Jayaprada V. V. Padmaja Copyright (c) 2026 https://creativecommons.org/licenses/by/4.0/ 2026-01-03 2026-01-03 6 1 01 04 10.64171/IJPR.2026.6.1.1-4