Yield and Mineral Composition among Mungbean [Vigna radiata (L.) R. Wilczek] Genotypes Grown in Different Agroecologies in East Africa

Mbeyagala, E K and Karimi, R and Binagwa, P H and Amuge, E S and Vemula, A K and Nair, R M (2023) Yield and Mineral Composition among Mungbean [Vigna radiata (L.) R. Wilczek] Genotypes Grown in Different Agroecologies in East Africa. International Journal of Agronomy, 2023. pp. 1-17. ISSN 1687-8167

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Mungbean [Vigna radiata (L.) R. Wilczek var. radiata] also referred to as green gram is a key crop especially in the marginal areas of East Africa. It is rich in micronutrients and protein and thus can help ameliorate malnutrition if incorporated into diets. 'is study was conducted to evaluate the performance of 26 fixed elite mungbean breeding genotypes for yield and micronutrient composition across di6erent locations in East Africa (Uganda, Kenya, and Tanzania). 'e genotypes displayed significant variability for nutritional, phenology, and yield-related traits across test environments. Significant genotype e6ects were observed for most of the traits except for average yield per plant and dry matter content (P < 0.05). Random effect of environment was significant for all traits, and significant GXE was observed for all traits except for dry matter and iron content (P < 0.05). Moderate to high broad-sense heritability (H2) was found among traits except for dry matter content which was low (H2 =10.4%). 'ere was a signi4cant and positive correlation between Fe and Zn (r =0.58), and Fe and Ca (r=0.46), indicating the potential to enhance these traits simultaneously through breeding and/or selection. However, the correlation between yield and nutrients (iron, zinc, and calcium) was negative. Environments KAT_SR_2019, KYM_LR_2020, and KYM_LR_2020 were found to be discriminating (informative) and representative of grain yield, calcium, and zinc content, respectively. Genotypes AVMU 1679, AVMU 1685, and AVMU 1686 combined both stability and high micronutrient content, while the high yielding and stable genotypes were AVMU 1689, AVMU 1681, and AVMU 16102. The identified genotypes need to be assessed for farmer preference in on-farm trials before they can be recommended for release as new varieties. Additionally, these genotypes will be useful in future breeding efforts as donors aimed at developing nutrient-dense and high yielding mungbean varieties.

Item Type: Article
Divisions: Statistics, Bio-Informatics & Data Management
Uncontrolled Keywords: Mungbean, Genotypes, East Africa
Subjects: Others > Genetics and Genomics
Others > East Africa
Depositing User: Mr Nagaraju T
Date Deposited: 01 Mar 2024 06:22
Last Modified: 01 Mar 2024 06:22
URI: http://oar.icrisat.org/id/eprint/12526
Official URL: https://www.hindawi.com/journals/ija/2023/5534650/
Acknowledgement: We thank the Genetic Resources and Seed Unit (GRU) and Nutrition laboratory at the World Vegetable Center for providing the elite mungbean genotypes evaluated in this study as well as carrying out the mineral analysis of grain samples.The technical assistance provided by the team in the Dry Land Legume Research Programme at NaSARRI, legume teams at TARI and KALRO during field trials in Uganda, Kenya, and Tanzania is duly appreciated. 'is research was funded by the African Union Commission (AUC) and European Commission (EU) under the project titled: “Development and Deployment of Iron Dense Mungbean Genotypes for Nutrition Security in the Drought Prone Areas of East Africa (Mung4-Fe) Project (grant number AURG II-2-119-2018).”
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