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Breeding implications of nodulation performance and root structure under natural inoculation for soil fertility enhancement and sustainable cowpea production

dc.contributor.authorMekonnen, T.W.
dc.contributor.authorHailemariam, F.M.
dc.contributor.authorAmsalu, B.
dc.contributor.authorGedil, M.
dc.contributor.authorLabuschagne, M.T.
dc.date.accessioned2023-01-18T11:17:51Z
dc.date.available2023-01-18T11:17:51Z
dc.date.issued2022-12-08
dc.identifier.citationMekonnen, T.W., Hailemariam, F.M., Amsalu, B., Gedil, M. & Labuschagne, M.T. (2022). Breeding implications of nodulation performance and root structure under natural inoculation for soil fertility enhancement and sustainable cowpea production. Frontiers in Sustainable Food Systems, 6: 1076760, 1-14.
dc.identifier.issn2571-581X
dc.identifier.urihttps://hdl.handle.net/20.500.12478/8009
dc.description.abstractNitrogen deficiency is the most limiting abiotic stress factor affecting the grain yield of cowpea (Vigna unguiculata L.) in sub-Saharan Africa (SSA) countries. Breeding for high-yielding potential in association with high nitrogen fixation performance is the principal objective of cowpea breeding programs to improve both the productivity and production of this orphan crop in the region. Therefore, the present study was undertaken to determine the diversity of genotypes for nodulation capacity in two environments and to understand the root architecture and morphology of genotypes as well as grain yield and yield-related traits in 324 cowpea genotypes. The experiment was conducted in two different environments during the 2017 cropping season. The experiments were laid out in 18 × 18 simple lattice design. Grain yield exhibited highly significant and positive genotypic correlations with stem diameter, basal root length of 1st whorls, basal root branching density, taproot length and adventitious root length, demonstrating that selection of cowpea genotypes based on these traits could be effective to capitalize on grain yield under low nitrogen conditions. Days to flowering, days to maturity, stem diameter, 1st whorl angle, basal root length of 1st whorls, basal root branching density, taproot length, adventitious root diameter and adventitious root length had significant and positive genotypic correlations with days to maturity. The first ten principal components (PC) explained 65.13% of the total variation. Stem diameter, taproot width, and taproot length traits were important contributors to the variability in the first PC. The highest inter-cluster distance (D2) was recorded between clusters III and IV. However, clusters II and V recorded the minimum inter-cluster distance (78.96 units). The range of intra-cluster distance was 24.22–5,112.92 units, indicating that the high genetic distance displayed within and between clusters has to be exploited via crossing and selecting the most divergent parents for future cowpea improvement. Five clusters of cowpea genotypes were evident, and within the clusters, the genotypes had good nodulation potential with high grain yield traits, which could significantly contribute to SSA food and nutritional security. Moreover, it can contribute to resilience and improve crop production and sustainability under marginal environmental conditions.
dc.description.sponsorshipMcKnight Foundation
dc.format.extent1-14
dc.language.isoen
dc.subjectCowpeas
dc.subjectEnvironment
dc.subjectNodulation
dc.subjectRoot Architecture
dc.subjectPhenotypes
dc.subjectEthiopia
dc.titleBreeding implications of nodulation performance and root structure under natural inoculation for soil fertility enhancement and sustainable cowpea production
dc.typeJournal Article
cg.contributor.crpMaize
cg.contributor.crpRoots, Tubers and Bananas
cg.contributor.affiliationWolkite University
cg.contributor.affiliationHaramaya University
cg.contributor.affiliationMelkassa Agricultural Research Center, Ethiopia,
cg.contributor.affiliationInternational Institute of Tropical Agriculture
cg.contributor.affiliationUniversity of the Free State
cg.coverage.regionAfrica
cg.coverage.regionEast Africa
cg.coverage.countryEthiopia
cg.coverage.hubHeadquarters and Western Africa Hub
cg.researchthemeBiotech and Plant Breeding
cg.isijournalISI Journal
cg.authorship.typesCGIAR and developing country institute
cg.iitasubjectAgronomy
cg.iitasubjectCowpea
cg.iitasubjectCrop Systems
cg.iitasubjectFood Security
cg.iitasubjectGrain Legumes
cg.iitasubjectPlant Breeding
cg.iitasubjectPlant Genetic Resources
cg.iitasubjectPlant Production
cg.iitasubjectSoil Fertility
cg.iitasubjectSoil Information
cg.journalFrontiers in Sustainable Food Systems
cg.notesOpen Access Journal; Published online: 08 Dec 2022
cg.accessibilitystatusOpen Access
cg.reviewstatusPeer Review
cg.usagerightslicenseCreative Commons Attribution 4.0 (CC BY 0.0)
cg.targetaudienceScientists
cg.identifier.doihttps://dx.doi.org/10.3389/fsufs.2022.1076760
cg.iitaauthor.identifierMelaku Gedil: 0000-0002-6258-6014
cg.futureupdate.requiredNo
cg.identifier.issue1076760
cg.identifier.volume6


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