Cowpea [Vigna unguiculata (L.) Walp.] Breeding

Boukar, Ousmane; Togola, Abou; Chamarthi, Siva K.; Belko, Nouhoun; Ishikawa, Haruki; Suzuki, Kanako; Fatokun, Christian

doi:10.1007/978-3-030-23400-3_6

Cited by 19 publications

(29 citation statements)

References 82 publications

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“…Cowpea (Vigna unguiculata Walp) is a legume crop cultivated in tropical and sub-tropical countries. This crop exhibits a wide range of differences in its seed characteristics, either morphological or chemical properties (Boukar et al, 2019;Langyintuo et al, 2003). The homeland of cowpea was Southern Africa (Beshir et al, 2019), and later it moved to East and West Africa, and recently India is considered the modern center of diversity of this crop.…”

Section: Introductionmentioning

confidence: 99%

Chemical and molecular examinations of some cowpea genotypes using simple sequence repeat and intersimple sequence repeat DNA markers in relation to their cooking quality

Soaud

Abdel-Sayyed

Mahgoub

et al. 2021

Food Science & Nutrition

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Section: Introductionmentioning

confidence: 99%

Chemical and molecular examinations of some cowpea genotypes using simple sequence repeat and intersimple sequence repeat DNA markers in relation to their cooking quality

Soaud

Abdel-Sayyed

Mahgoub

et al. 2021

Food Science & Nutrition

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“…It is also grown in many other parts of the world including Latin America, Southeast Asia, the Mediterranean Basin, and the United States (FAOSTAT, www.fao.org). Cowpea is well-known for its adaptation to heat and drought, and to soils with low fertility, making it a successful crop in arid and semi-arid regions where most other crops do not perform as well [1]. However, breeding for increased heat and drought tolerance as well as for key agronomic traits and pest and disease-resistance is crucial as climate changes associated with global warming increase, and given that cowpea is primarily grown in regions that are quite vulnerable to climate change [2,3].…”

Section: Introductionmentioning

confidence: 99%

“…The two most important cultivar groups are unguiculata (grain-type cowpea) and sesquipedalis (vegetable-type cowpea, also known as asparagus bean or yardlong bean) [4]. The long- and succulent-podded vegetable cowpea is mostly grown in southeastern Asia while the short-podded grain cowpea is prevalent in Africa and elsewhere [1,6]. In addition to being grown for grain, cowpea is a source of nutritious fodder for livestock in dry savanna regions of sub-Saharan Africa [7].…”

Section: Introductionmentioning

confidence: 99%

“…In addition to being grown for grain, cowpea is a source of nutritious fodder for livestock in dry savanna regions of sub-Saharan Africa [7]. One important aspect of cowpea agronomy is the time to flowering, as early-maturing types can in many cases be deployed as a strategy to capitalize on shortened periods of optimal growth, thus avoiding late-season drought with its accompanying array of biotic stressors [1].…”

Section: Introductionmentioning

confidence: 99%

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The UCR Minicore: a valuable resource for cowpea research and breeding

Muñoz‐Amatriaín

Herniter

et al. 2021

Preprint

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Incorporation of new sources of genetic diversity into plant breeding programs is crucial for continuing to improve yield and quality, as well as tolerance to abiotic and biotic stresses. A minicore (the 'UCR Minicore') composed of 368 worldwide accessions of cultivated cowpea has been assembled, having been derived from the University of California, Riverside cowpea collection. High-density genotyping with 51,128 SNPs followed by principal component and genetic assignment analyses identified six subpopulations in the UCR Minicore, mainly differentiated by cultivar group and geographic origin. All six subpopulations were present to some extent in West African material, suggesting that West Africa is a center of diversity for cultivated cowpea. Additionally, population structure analyses supported two routes of introduction of cowpea into the U.S.: (1) from Spain to the southwest U.S. through Northern Mexico, and (2) from Africa to the southeast U.S. via the Caribbean. Genome-wide association studies (GWAS) of important agronomic traits including flowering time, resulted in the identification of significant SNPs for all traits and environments. The mapping resolution achieved by high-density genotyping of this diverse minicore collection allowed the identification of strong candidate genes, including orthologs of the Arabidopsis FLOWERING LOCUS T. In summary, this diverse, yet compact cowpea collection constitutes a suitable resource to identify loci controlling complex traits, consequently providing markers to assist with breeding to improve this crop of high relevance to global food and nutritional security.

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“…Cowpea is the most cultivated legume in West Africa, and its production benefits human and livestock nutrition in addition to long-term soil amendment that sustains cropping systems on marginal lands in low-income economies (Dakora and Keya, 1997 ; Duranti and Gius, 1997 ; FAO, 2004 ; IITA, 2010 ; Foyer et al, 2016 ). Cowpea is suggested to originate from West and Central Africa, which currently has most of the germplasm (Boukar et al, 2019b ). The biotic constraints of cowpea include parasitic weeds, insect pests particularly aphids, fungal, viral, and bacterial diseases, whereas high temperature, drought, and erratic rainfalls during the growing season constitute major abiotic constraints (Boukar et al, 2019a , b ; Horn and Shimelis, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Limiting-Stress-Elimination Hypothesis: Using Non-hormonal Biostimulant to Reduce Stress and Increase Savanna Cowpea [Vigna unguiculata (L.) Walp.] Productivity

Atta-Boateng

Berlyn

2021

Front. Plant Sci.

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An alternative decision axiom to guide in determining the optimal intervention strategy to maximize cowpea production is proposed. According to the decrement from the maximum concept of Mitscherlich, the decrement from the maximum for each stressor must be minimized to produce the absolute maximum production. In crop production, this means all deficient nutrients must be supplemented to ensure maximum yield and laid the foundation in fertilizer formulation. However, its implementation is not economically feasible in many situations, particularly where multiple environmental factors impact crop productivity as in the case of low resource conditions. We propose and test the hypothesis that yield allocation will increase when the most limiting stressor among prevailing stressors is eliminated at least until the next limiting stressor impacts productivity. We selected drought limiting savanna conditions and cowpea (Vigna unguiculata), adapted to nitrogen dependence. To determine the limiting condition, we measured the response of cowpea to D-sorbitol, nitrogen, and non-hormonal biostimulant (nhB) treatments. The nhB treatment increased total biomass by 45% compared to nitrogen, 13%, and D-sorbitol, 17%, suggesting osmotic stress is more limiting in the observed savanna conditions. The effect of the biostimulant is due to antioxidants and key amino acids that stimulate metabolism and stress resistance. Where nitrogen becomes the next constraining factor, biostimulants can contribute organic nitrogen. The study supports the use of biostimulants as candidate intervention under conditions where crop productivity is limited by multiple or alternating constraints during crop growth.

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Cowpea [Vigna unguiculata (L.) Walp.] Breeding

Cited by 19 publications

References 82 publications

Chemical and molecular examinations of some cowpea genotypes using simple sequence repeat and intersimple sequence repeat DNA markers in relation to their cooking quality

Chemical and molecular examinations of some cowpea genotypes using simple sequence repeat and intersimple sequence repeat DNA markers in relation to their cooking quality

The UCR Minicore: a valuable resource for cowpea research and breeding

Limiting-Stress-Elimination Hypothesis: Using Non-hormonal Biostimulant to Reduce Stress and Increase Savanna Cowpea [Vigna unguiculata (L.) Walp.] Productivity

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