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Effect of Gamma Irradiation on Survivability, Growth Performances and Floral Characters of Jasminum officinale (Samanpichcha)

Authors:

S.A.P. Nelka ,

University of Colombo Institute for Agro-Technology and Rural Sciences, Hambantota, LK
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N.P. Vidanapathirana,

University of Colombo Institute for Agro-Technology and Rural Sciences, Hambantota, LK
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N. Dahanayake,

University of Ruhuna, Mapalana, Kamburupitiya, LK
About N.
Faculty of Agriculture
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S. Subasinghe,

University of Ruhuna, Mapalana, Kamburupitiya, LK
About S.
Faculty of Agriculture
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T.D. Silva,

University of Colombo, LK
About T.D.
Department of Plant Science, Faculty of Science
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S. Weerasinghe,

University of Colombo Institute for Agro-Technology and Rural Sciences, Hambantota, LK
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L.M. Rifnas,

University of Colombo Institute for Agro-Technology and Rural Sciences, Hambantota, LK
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H. Rohanadeera,

University of Colombo Institute for Agro-Technology and Rural Sciences, Hambantota, LK
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W.C.M.S. Madushanka,

University of Colombo Institute for Agro-Technology and Rural Sciences, Hambantota, LK
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S. Dushane,

University of Colombo Institute for Agro-Technology and Rural Sciences, Hambantota, LK
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T.G.B. Dhanushka,

University of Colombo Institute for Agro-Technology and Rural Sciences, Hambantota, LK
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H.I.G.K. Anuruddhi

University of Colombo Institute for Agro-Technology and Rural Sciences, Hambantota, LK
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Abstract

Physical mutagenesis is an effective mutational breeding method for improving various growth and floral characteristics of ornamental plants. The experiment was undertaken with an objective to investigate the effect of various dosages of gamma irradiation on survivability, growth and floral characteristics of Jasminum officinale plants raised by rooted cuttings. The 60CO Gamma irradiation source at Horticultural Crop Research and Developmental Institute, Gannoruwa was used to expose rooted plants to different dosages such as 0Gy, 17Gy, 21Gy, 25Gy, 29Gy and 33Gy. A Complete Randomized Design with four replicates having 10 plants for each replicate was practiced. The results revealed that gamma irradiation dosage from 25Gy to 33Gy significantly decreased the survivability of J. officinale plants (P<0.05). LD50 of gamma radiation on J. officinale was occurred around 33Gy at maturity stage. Plant height and shoot length were significantly reduced by gamma irradiation dosages of 17Gy to 33Gy compared to the control and significant reduction of shoot number was observed at 33Gy. Gamma irradiation with 17Gy dosage, it showed a significant reduction in petal width (0.82 cm) of flowers. None of the other dosages were able to develop a change in the floral characteristics of J. officinale. The study showed that 33Gy gamma irradiated plant, it is having significant reduction of plant height, number of shoots and shoot length hence it could be domesticated as a dwarf and potted plant.

How to Cite: Nelka, S. A. P., Vidanapathirana, N. P., Dahanayake, N., Subasinghe, S., Silva, T. D., Weerasinghe, S., … Anuruddhi, H. I. G. K. (2021). Effect of Gamma Irradiation on Survivability, Growth Performances and Floral Characters of Jasminum officinale (Samanpichcha). Journal of Agro-technology and Rural Sciences, 1(1), 24–29. DOI: http://doi.org/10.4038/atrsj.v1i1.28
Published on 01 Nov 2021.
Peer Reviewed

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