Gamma Rays and Sodium Azide Induced Genetic Variability in High-Yielding and Biofortified Mutant Lines in Cowpea [ Vigna unguiculata (L.) Walp.].

Autor: Raina A; Mutation Breeding Laboratory, Department of Botany, Aligarh Muslim University, Aligarh, India.; Botany Section, Women's College, Aligarh Muslim University, Aligarh, India., Laskar RA; Department of Botany, Bahona College, Jorhat, India., Wani MR; Department of Botany, Abdul Ahad Azad Memorial Degree College Bemina, Cluster University Srinagar, Srinagar, India., Jan BL; Department of Clinical Pharmacy, College of Pharmacy, King Saud University, Riyadh, Saudi Arabia., Ali S; Department of Biotechnology, Yeungnam University, Gyeongsan, South Korea., Khan S; Mutation Breeding Laboratory, Department of Botany, Aligarh Muslim University, Aligarh, India.
Jazyk: angličtina
Zdroj: Frontiers in plant science [Front Plant Sci] 2022 Jun 14; Vol. 13, pp. 911049. Date of Electronic Publication: 2022 Jun 14 (Print Publication: 2022).
DOI: 10.3389/fpls.2022.911049
Abstrakt: With the twin pressures of high population growth and extreme weather events, developing countries are the worst hit in meeting the food demands of their people, with millions unable to access adequate and nutritionally balanced food. Crop production must be increased by 70% to keep up with the food demands of a rapidly growing population, which is expected to rise to 9.6 billion by 2050. Legumes are ideal food crops to increase agricultural productivity and achieve sustainable development goals. Cowpea, a warm-season grain legume, is often categorized as a neglected crop with immense scope for genetic improvement through proper breeding strategies. A multi-year field experiment of induced mutagenesis was conducted to increase seed yield and genetic variability in the agro-economic traits of two cowpea varieties treated with different doses of gamma (γ) rays and sodium azide (SA). The study was also aimed to optimize different doses of γ rays and SA employed individually and in combinations. Quantitative trait analysis revealed a maximum increase in seed yield from M 2 to M 3 generation. Among the 10 quantitative traits studied, seeds per pod and seed weight positively correlated with a major direct impact on yield. An extensive phenotypic selection cycle from M 2 -M 4 generations resulted in isolating new high-yielding and nutrient-dense mutant lines. Such high-yielding biofortified mutant lines with enhanced genetic variability could serve as a donor of elite genes and represent a valuable genetic resource for improving low-yielding warm-season grain legumes.
Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.
(Copyright © 2022 Raina, Laskar, Wani, Jan, Ali and Khan.)
Databáze: MEDLINE
Externí odkaz: