Effect of gamma rays and colchicine on morphology, flowering andyield attribute of tuberose (Agave amica (Medik.) Thiede & Govaerts)
DOI:
https://doi.org/10.24154/jhs.v21i1.3936Keywords:
BRH 19, colchicine, gamma rays, mutants, tuberoseAbstract
The genetic enhancement of tuberose is hindered by limited genetic variability, self-incompatibility and seed sterility in double type tuberose; therefore, an attempt was made to harness the potential of induced mutations, using both physical (gamma rays 1.0 to 3.5 kR) and chemical (colchicine 0.01 to 0.11%) mutagens to diversify the genetic makeup of double type tuberose var. BRH 19. Results revealed that minimum days to 50% sprouting was recorded with colchicine (0.11%), whereas, least days to first flower opening, maximum survival percentage and number of florets open at a time were noted in control. Maximum plant height and spike longevity were recorded with colchicine (0.07%), while, number of leaves per clump noted maximum with colchicine (0.05%). Maximum leaf area, spike length, rachis length, length of floret, floret diameter, number of spikes per clump, number of bulbs per clump and weight of bulbs per clump were recorded with 3.5 kR gamma rays. Bulbs irradiated with 1.00 kR recorded maximum number of florets per spike, however, maximum number of bulblets and weight of bulblets/clump were found maximum with colchicine (0.01%).
Downloads
References
Anu Krishnan, Geetha, C. K., Rajeevan, P. K., Valsalakumari, P. K., & Saifudeen, N. (2003). Induced mutation in tuberose (Polianthes tuberosa Linn.) by gamma rays. In P. K. Rajeevan, P. K. Valsalakumari, & R. L. Misra (Eds.), One hundred research papers in floriculture (pp. 255–259). Indian Society of Ornamental Horticulture.
Ayesha Manzoor, Ahmad, T., Muhammad, A. B., Mirza, Q. B., Quresh, A. A., Muhammad, K. N., & Ahmed, I. H. (2018). Induction and identification of colchicine-induced polyploidy in Gladiolus grandiflorus cv. White Prosperity. Folia Horticulturae, 30(2), 307–319. https://doi.org/10.2478/fhort-2018-0026
Mangena, P., & Pirtunia, N. M. (2023). Colchicine-induced polyploidy in leguminous crops enhances morpho-physiological characteristics for drought stress tolerance. Life, 13(10), Article 1966. https://doi.org/10.3390/life13101966
Rivello-Flores, J., Ruiz-Posadas, L. de M., Arévalo-Galarza, L. de B., Castillo-Juárez, H., Soto-Hernández, R. M., & Castillo-Martínez, C. R. (2022). Use of gamma radiation for the genetic improvement of underutilized plant varieties. Plants, 11(9), Article 1161. https://doi.org/10.3390/plants11091161
Sharavani, C. S. R., Lakshmi Kode, T., Tanuja Priya, B., Usha Bharathi, Reddi, S. M., & Ramakrishna, M. (2019). Studies on effect of gamma irradiation on survival and growth of tuberose (Polianthes tuberosa L.). Advances in Bioresearch, 10(1), 109–113.
Singh, A. K., & Kumar, A. (2013). Studies of gamma irradiation on morphological characters in gladiolus. Asian Journal of Horticulture, 8(1), 299–303.
Patil, S., Chawla, S. L., & Chaudhary, P. (2017). Induction of mutation through mutagens in gladiolus (Gladiolus hybridus cv. American Beauty). International Journal of Chemical Studies, 5(5), 2305–2308.
Patil, S., & Dhaduk, B. K. (2009). Effect of gamma radiation on vegetative and floral characters of commercial varieties of gladiolus (Gladiolus hybrida). Journal of Ornamental Horticulture, 12(4), 232–238.
Downloads
Published
Data Availability Statement
None
Issue
Section
License
Copyright (c) 2026 M Sindha, S L Chawla, P B Patel, C Shivaswamy, D K Sharma, A Srivastava (Author)
This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Authors retain copyright. Articles published are made available as open access articles, distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original author and source are credited. 
This journal permits and encourages authors to share their submitted versions (preprints), accepted versions (postprints) and/or published versions (publisher versions) freely under the CC BY-NC-SA 4.0 license while providing bibliographic details that credit, if applicable.
