Effectiveness of repeated mutagenesis of sesame crosses for enhancing polygenic variability in F2M2 generation.

Autor: Kar RK; Department of Genetics and Plant Breeding, Institute of Agricultural Sciences (IAS), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India., Mishra TK; Department of Genetics and Plant Breeding, College of Agriculture, Odisha University of Agriculture and Technology (OUAT), Bhubaneswar, Odisha, India., Pradhan B; Department of Genetics and Plant Breeding, College of Agriculture, Odisha University of Agriculture and Technology (OUAT), Bhubaneswar, Odisha, India., Gaber A; Department of Biology, College of Science, Taif University, Taif, Saudi Arabia., Sahu D; Department of Genetics and Plant Breeding, Institute of Agricultural Sciences (IAS), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India., Das S; Department of Genetics and Plant Breeding, College of Agriculture, Odisha University of Agriculture and Technology (OUAT), Bhubaneswar, Odisha, India., Swain DK; Department of Agricultural Statistics, Institute of Agricultural Sciences (IAS), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India., Behera S; KrishiVigyan Kendra (KVK), Odisha University of Agriculture and Technology (OUAT), Bhawanipatna, Odisha, India., Padhiary AK; KrishiVigyan Kendra (KVK), Odisha University of Agriculture and Technology (OUAT), Sambalpur, Odisha, India., Pattanayak S; KrishiVigyan Kendra (KVK), Odisha University of Agriculture and Technology (OUAT), Balangir, Odisha, India., Monalisa SP; Department of Seed Science and Technology, Institute of Agricultural Sciences (IAS), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India., Pandey RK; Directorate of Plant Protection, Quarantine and Storage, Central Integrated Pest Management Centre, Bhubaneswar, Odisha, India., Pradhan PP; Department of Soil Sciences and Agricultural Chemistry, Institute of Agricultural Sciences (IAS), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India., Sarangi DN; ICAR-Central Institute for Women in Agriculture (ICAR-CIWA), Bhubaneswar, Odisha, India., Mohanty MR; Regional Research and Technology Transfer Sub-Station (RRTTSS), Odisha University of Agriculture and Technology (OUAT), Jeypore, Odisha, India., Lenka B; Department of Genetics and Plant Breeding, Institute of Agricultural Sciences (IAS), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India., Dip L; KrishiVigyan Kendra (KVK), Odisha University of Agriculture and Technology (OUAT), Sambalpur, Odisha, India., Jena A; KrishiVigyan Kendra (KVK), Odisha University of Agriculture and Technology (OUAT), Sambalpur, Odisha, India., Pradhan U; KrishiVigyan Kendra (KVK), Odisha University of Agriculture and Technology (OUAT), Sambalpur, Odisha, India., Mishra SP; KrishiVigyan Kendra (KVK), Odisha University of Agriculture and Technology (OUAT), Jajpur, Odisha, India., Patel MK; Department of Fruit Science, Institute of Agricultural Sciences (IAS), Siksha 'O' Anusandhan (Deemed to be University), Bhubaneswar, Odisha, India., Mishra RP; KrishiVigyan Kendra (KVK), Odisha University of Agriculture and Technology (OUAT), Angul, Odisha, India., Hossain A; Division of Soil Science, Bangladesh Wheat and Maize Research Institute, Nashipur, Dinajpur, Bangladesh.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2023 Aug 10; Vol. 18 (8), pp. e0289813. Date of Electronic Publication: 2023 Aug 10 (Print Publication: 2023).
DOI: 10.1371/journal.pone.0289813
Abstrakt: The value of combining hybridization and mutagenesis in sesame was examined to determine if treating hybrid sesame plant material with mutagens generated greater genetic variability in four key productivity traits than either the separate hybridization or mutation of plant material. In a randomized block design with three replications, six F2M2 varieties, three F2varieties, and three parental varieties were assessed at Odisha University of Agriculture and Technology, Bhubaneswar, Odisha, India. The plant characteristics height, number of seed capsules per plant, and seed yield per plant had greater variability in the F2M2 generation than their respective controls (F2), however, the number of primary branches per plant varied less than in the control population. The chances for trait selection to be operative were high for all the characteristics examined except the number of primary branches per plant, as indicated by heritability estimates. Increases in the mean and variability of the characteristics examined indicted a greater incidence of beneficial mutations and the breakdown of undesirable linkages with increased recombination. At both phenotypic and genotypic levels strong positive correlations between both primary branch number and capsule number with seed yield suggest that these traits are important for indirect improvement in sesame seed yield. As a result of the association analysis, sesame seed yield and its component traits improved significantly, which may be attributed to the independent polygenic mutations and enlarged recombination of the polygenes controlling the examined characteristics. Compared to the corresponding control treatment or to one cycle of mutagenic treatment, two cycles of mutagenic treatment resulted in increased variability, higher transgressive segregates, PTS mean and average transgression for sesame seed yield. These findings highlight the value of implementing two EMS treatment cycles to generate improved sesame lines. Furthermore, the extra variability created through hybridization may have potential in subsequent breeding research and improved seed yield segregants may be further advanced to develop ever-superior sesame varieties.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2023 Kar et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze: MEDLINE
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