Abstract
Background
Induced mutagenesis is a quick and effective breeding strategy to enhance genetic variability, an important prerequisite for the genetic improvement of existing lentil cultivars. Lentil is an important cool season food legume with low productivity due to the low yielding potential of existing lentil cultivars. The present study aimed at increasing the yielding potential, resulted in the isolation of six high-yielding mutant lines with dense micronutrients.
Methods and results
Two lentil varieties were treated with different doses of ethyl methanesulphonate, hydrazine hydrate, and sodium azide, followed by phenotypic selection for consecutive three generations. In the M2 generation, six high-yielding mutant lines with stable phenotypes were isolated. The results revealed a substantial increase in mean values for quantitative and physiological traits coupled with a manifold increase in the genotypic coefficient of variation (GCV), heritability (h2), and genetic advance (GA). Correlation analysis revealed that plant yield was significantly and positively influenced (P < 0.001) by fertile branches per plant, pods per plant, and seed weight. Principal component analysis revealed two principal components contributed 63.5 and 62.5% of the total variation in the varieties Pant L-639 and Pant L-406, respectively.
Conclusion
The isolated high-yielding mutant lines with dense micronutrients that serve as rich genetic resources could be subjected to further breeding trials. After attaining yield stability, these might be registered and released as new improved lentil varieties.
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Data availability
All data generated or analyzed during this study are included in this published article.
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The authors are thankful to the Chairperson, Department of Botany, Aligarh Muslim University, Aligarh, India, for providing basic research facilities.
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AR: contributed to designing and performing the experiments, analyzing and assessing data, and drafting and revising the manuscript. MRW and RAL: contributed to analyzing and evaluating data, SK: contributed to the supervision of overall experimentation. All authors reviewed and approved the manuscript.
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Raina, A., Wani, M.R., Laskar, R.A. et al. Chemical mutagenesis: role in breeding and biofortification of lentil (Lens culinaris Medik) mutant lines. Mol Biol Rep 49, 11313–11325 (2022). https://doi.org/10.1007/s11033-022-07678-6
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DOI: https://doi.org/10.1007/s11033-022-07678-6