Mutagen-induced Genetic Variability and Heritability Analysis for Yield Associated Quantitative Characters in Canola
DOI:
https://doi.org/10.38211/joarps.2025.06.300Keywords:
Mutagen, yield, quantitative characters, Canola, Germ plasmAbstract
Due to adverse effect of other cooking oils, people are switched on health promoting oils and vegetables; therefore canola genetic improvement regarding yield has been planned in majority of European and Asian countries. The major advantage of canola green and oil is for availability unsaturated fatty acid which indirectly improves blood pressure by thinning blood (dissolve many nutrients, vitamins and cholesterol) cardiac activities and muscles strength. Genetic variability through mutagenesis is proven as a powerful tool for introducing new alleles, therefore different doses of Gamma radiations (750Gy, 1000Gy, 1250Gy) and Ethyl methansalfonate (0.5%, 1.0% and 1.5%) were used for grain yield associated quantitative characters in two Canola genotypes (Hyola-42 and Shiralee). The data was recorded for number of seeds per pod, number of pods per plant, 1000 seed weight and seed yield per plant in M2 and M3 generation. All mutagenic treatments had a significant (p≤0.05) variation on all traits studied and produced great variability for both mutagens. The mean value of all the phenotypic parameters in M2 generation increased with moderate dose of EMS and Gamma rays in both genotypes as compared to respective controls and in M3 generation both genotypes were more responsive to Gamma rays (1000Gy) for all studied characters in both tested genotypes. Heritability analysis exhibited high heritability and high genetic advance for most of the traits by moderate and highest does of Gamma rays, while reverse is true for EMS in both generations for Shiralee. Over all gamma rays was most efficient to induce better allele contributing to 1000-seed weight.
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Copyright (c) 2025 Zeenat Bano, Sadaf Tabasum Qureshi, Rabia Asma Memon, Imtiaz Ahmed
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