National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Hibiscus, being an potential ornamental shrub needs improvement in terms of architecture. Mutation breeding technique has been considered as an efficient tool for vegetatively propagated crops. For every mutation breeding experiment, determination of mutagenic sensitivity is an important step because it varies with every species and varieties. Based on this, investigation on the induction of mutation in Hibiscus rosa-sinensis L. was carried out with the objective of creating genetic variability through physical mutagen viz., gamma rays and Ethyl Methane Sulphonate (EMS). In this study, hard wood cuttings of Hibiscus rosa-sinenis Cultivar Red Single were treated with nine different dose of gamma rays (1 to
5 k R) and ten different concentrations of EMS ranging from 0.1% to 1.0%. The results revealed that gradual reduction in survival of cuttings, shoot length, leaf length and leaf width with increase in dosage of gamma rays and EMS. However gamma rays treated plants showed significant gradual reduction in growth rate than the EMS treated plants. Based on probit analysis, LD50 (Lethal dose) value for gamma radiation and EMS have been fixed as 2.81 kR and 0.89% respectively.
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