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Vol. 11, Issue 5 (2022)

Evaluation of field performance of mutant lines M1V1 and M1V2 of Jasminum auriculatum cv. CO 1 Mullai

Author(s):
V Deepashree, M Ganga, M Jawaharlal, S Manonmani and M Suganthy
Abstract:
Jasminum auriculatum is flower crop widely cultivated as loose flower. The crop has slight difficulty improvement as it has narrow genetic variability hence induction of mutagenesis through gamma rays and EMS application has been adopted to create variability in jasmine. Therefore, the objective to evaluate the putative mutants of J. auriculatum generated through physical and chemical mutation with various dosages of gamma radiation and EMS at M1V1 and M1V2 generation. The cuttings were irradiated with 10, 15, 20 and 25 Gy of gamma rays and with EMS (25, 30, 35 and 40 mM) for M1V1 generation and individual plant parameter were observed in both M1V1 and M1V2 generation. Data were collected on plant height (cm), number of primary branches (cm), internodal length (cm), number of leaves, leaf area (cm2), days of flowering, flower bud length (cm), corolla tube length (cm). High doses of gamma radiation lower germination and survival percentages, according to field observations of M1V1 generation. The LD50 (50 percent lethality) was attained at 20 Gy and 40 mM. The morphological parameters were all affected with increase in dosage with gamma rays and EMS. The plant height and internode length seemingly decrease with increase in the dosage. Whereas M1V2 generation the survival rate differed depending on the x-ray irradiation dosage, as well as the uneven establishment count after planting were observed. Persistent physiological damage transferred from M1V1 and M1V2 generation caused the survival rate to drop. Observation on growth and flowering character showed positive effect on the flower bud length (3.10 cm), corolla tube length (2.42 cm) and the number days to flowering was higher M1V2 generation. The mutant’s morphological differences from the parental plant (control) indicated that new genetic diversity had emerged in the irradiated J. auriculatum.
Pages: 2245-2248  |  303 Views  92 Downloads


The Pharma Innovation Journal
How to cite this article:
V Deepashree, M Ganga, M Jawaharlal, S Manonmani, M Suganthy. Evaluation of field performance of mutant lines M1V1 and M1V2 of Jasminum auriculatum cv. CO 1 Mullai. Pharma Innovation 2022;11(5):2245-2248.

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