African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12495

Review

Current status of molecular tools development for cowpea [Vigna unguiculata (L.) Walp.] improvement

Abdoul Moumouni Iro Sodo
  • Abdoul Moumouni Iro Sodo
  • Cowpea Breeding Unit, International Institute of Tropical Agriculture (IITA), PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria.
  • Google Scholar
Christian Fatokun
  • Christian Fatokun
  • Cowpea Breeding Unit, International Institute of Tropical Agriculture (IITA), PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria.
  • Google Scholar
Bunmi Olasanmi
  • Bunmi Olasanmi
  • Department of Crop and Horticultural Sciences, University of Ibadan, Ibadan 200284, Oyo State, Nigeria.
  • Google Scholar
Ousmane Boukar
  • Ousmane Boukar
  • Cowpea Breeding Unit, International Institute of Tropical Agriculture (IITA), PMB 5320, Oyo Road, Ibadan 200001, Oyo State, Nigeria.
  • Google Scholar


  •  Received: 12 December 2022
  •  Accepted: 08 February 2023
  •  Published: 31 August 2023

References

Acquaah G (2015). Conventional Plant Breeding Principles and Techniques. Advances in plant breeding strategies: Breeding, Biotechnology and Molecular Tools 1:115-158. Adu BG, Adu Amoah R, Aboagye LM, Abdoul Aziz MG, Boampong R (2021). High-Density DArT Markers and Phenotypic Characterization of Cowpea Accessions (Vigna unguiculata (L.) Walp). Advances in Agriculture pp. 1-12.
Crossref

 

Agbicodo EM, Fatokun CA, Bandyopadhyay R, Wydra K, Diop NN, Muchero W, Ehlers JD, Roberts PA, Close TJ, Visser RGF, van der Linden CG (2010). Identification of markers associated with bacterial blight resistance loci in cowpea [Vigna unguiculata (L.) Walp.]. Euphytica 175:215-226.
Crossref

 

Ajibade SR, Weeden NF, Chite SM (2000). Inter simple sequence repeat analysis of genetic relationships in the genus Vigna. Euphytica 111:47-55
Crossref

 

Aliyu OM, Makinde BO (2016). Phenotypic Analysis of Seed Yield and Yield Components in Cowpea (Vigna unguiculata L., Walp.). Plant Breeding and Biotechnology 4(2):252-261.
Crossref

 

Ampadu HK (2017). Genetic markers associated with Striga gesnerioides resistance and seed size in cowpea (Vigna unguiculata L., Walp) ibred lines. University of Cape Coast. 9-10.

 

Amusa T, Enete A, Oketoobo E, Okon U (2015). Determinants of soil management practices among small-holder farmers in Ekiti State, Nigeria. Nigeria Agricultural Journal 46(2):25-34.

 

Andargie M, Pasquet RS, Gowda BS, Muluvi GM, Timko MP (2014). Molecular mapping of QTLs for domestication-related traits in cowpea (V. unguiculata (L.) Walp.). Euphytica 200:401-412.
Crossref

 

Andargie M, Pasquet RS, Gowda BS, Muluvi GM, Timko MP (2011). Construction of a SSR-based genetic map and identification of QTL for domestication traits using recombinant inbred lines from a cross between wild and cultivated cowpea (V. unguiculata (L.) Walp.). Molecular Breeding 28:413-420.
Crossref

 

Angira B, Zhang Y, Scheuring CF, Zhang Y, Masor L, Coleman JR, Liu YH, Singh BB, Zhang H Bin, Hays DB, Zhang M (2020). Quantitative trait loci influencing days to flowering and plant height in cowpea, Vigna unguiculata (L.) Walp. Molecular Genetics and Genomics 295:1187-1195.
Crossref

 

Asare AT, Gowda BS, Galyuon IKA, Aboagye LL, Takrama JF, Timko MP (2010). Assessment of the genetic diversity in cowpea (Vigna unguiculata L. Walp.) germplasm from Ghana using simple sequence repeat markers. Plant Genetic Resources 8(2):142-150.
Crossref

 

Badiane FA, Diouf M, Diouf D (2014). Cowpea. European Journal of Horticultural Science 79:183-194.
Crossref

 

Badiane FA, Gowda BS, Cissé N, Diouf D, Sadio O, Timko MP (2012). Genetic relationship of cowpea (Vigna unguiculata) varieties from Senegal based on SSR markers. Genetics and Molecular Research 11(1):292-304.
Crossref

 

Boukar O, Fatokun CA, Huynh BL, Roberts PA, Close TJ (2016). Genomic tools in cowpea breeding programs: Status and perspectives. F Frontiers in Plant Science 7:757.
Crossref

 

Brijesh A,Yang Z,Hong-Bin Z, Meiping Z,Singh B (2022). Genetic and QTL Analysis for Hilum-Eye Types in Cowpea (Vigna Unguiculata L. Walp).

 

Carvalho M, Muñoz-Amatriaín M, Castro I, Lino-Neto T, Matos M, Egea-Cortines M, Rosa E, Close T, Carnide V (2017). Genetic diversity and structure of Iberian Peninsula cowpeas compared to world-wide cowpea accessions using high density SNP markers. BMC Genomics 18.
Crossref

 

Chen H, Chen H, Hu L, Wang L, Wang S, Wang ML, Cheng X (2017). Genetic diversity and a population structure analysis of accessions in the Chinese cowpea [Vigna unguiculata (L.) Walp.] germplasm collection. The Crop Journal 5(5):363-372.
Crossref

 

Coulibaly S, Pasquet RS, Papa R, Gepts P (2002). AFLP analysis of the phenetic organization and genetic diversity of Vigna unguiculata L. Walp. reveals extensive gene flow between wild and domesticated types. Theoretical and Applied Genetics 104:358-366.
Crossref

 

De Ron AM (2015). Diversity in 113 cowpea [Vigna unguiculata (L) Walp.] accessions assessed with 458 SNP markers. Journal of the Korean Physical Society 3:1-15.

 

Egbadzor KF, Ofori K, Yeboah M, Aboagye LM, Opoku-Agyeman MO, Danquah EY, Offei SK (2014). Diversity in 113 cowpea [Vigna unguiculata (L) Walp] accessions assessed with 458 SNP markers. Journal of the Korean Physical Society 3:1-15.
Crossref

 

Ehlers JD, Hall AE (1997). "Cowpea (Vigna unguiculata L. walp.)." Field Crops Research 53(1-3):187-204.
Crossref

 

Enete A, Amusa T (2010). Challenges of Agricultural Adaptation to Climate Change in Nigeria: a Synthesis from the Literature. Field Actions Science Reports. The Journal of Field Actions 4:1-11. View

 

Fahad S, Bajwa AA, Nazir U, Anjum SA, Farooq A, Zohaib A, Sadia S, Nasim W, Adkins S, Saud S, Ihsan MZ, Alharby H, Wu C, Wang D, Huang J (2017). Crop production under drought and heat stress: Plant responses and management options. Frontiers in Plant Science 8:1147.
Crossref

 

Fang J, Chao CCT, Roberts PA, Ehlers JD (2007). Genetic diversity of cowpea [Vigna unguiculata (L.) Walp.] in four West African and USA

 

breeding programs as determined by AFLP analysis. Genetic Resources and Crop Evolution 54:1197-1209.

 

FAOSTAT (2021).

View

 

Fatokun C, Girma G, Abberton M, Gedil M, Unachukwu N, Oyatomi O, Yusuf M, Rabbi I, Boukar O (2018). Genetic diversity and population

 

structure of a mini-core subset from the world cowpea (Vigna unguiculata (L.) Walp.) germplasm collection. Scientific Reports 8(1):16035.

 

Fatokun CA, Danesh D, Young ND, Stewart EL (1993). Molecular taxonomic relationships in the genus Vigna based on RFLP analysis. Theoretical and Applied Genetics 86:97-104.
Crossref

 

Fatokun CA, Menancio-Hautea DI, Danesh D, Young ND (1992). Evidence for orthologous seed weight genes in cowpea and mung bean based on RFLP mapping. Genetics 132(3):841-846.
Crossref

 

Fery RL, Singh BB (1997). Cowpea genetics: a review of the recent literature," in Advances in Cowpea Research. Co-publication of International Institute of Tropical Agriculture (IITA) and Japan International Research Center for Agricultural Sciences (JIRCAS). Eds. Singh BB, Mohan Raj DR, Dashiell KE, Jackai LEN (Ibadan, Nigeria: IITA), pp. 13-29.

 

Ganal MW, Altmann T, Röder MS (2009). SNP identification in crop plants. Current Opinion in Plant Biology 12(2):211-217.
Crossref

 

Garcia-Oliveira AL, Zate ZZ, Olasanmi B, Boukar O, Gedil M, Fatokun C (2020). Genetic dissection of yield associated traits in a cross between cowpea and yard-long bean (Vigna unguiculata (L.) Walp.) based on DArT markers. Journal of Genetics 99(1):57-59.
Crossref

 

Gbedevi KM, Boukar O, Ishikawa H, Abe A, Ongom PO, Unachukwu N, Rabbi I, Fatokun C (2021). Genetic diversity and population structure of cowpea [Vigna unguiculata (L.) Walp.] germplasm collected from Togo based on DArT markers. Genes 12(9):1-14.
Crossref

 

Gomes AMF, Draper D, Talhinhas P, Batista Santos P, Simões F, Nhantumbo N, Massinga R, Ramalho JC, Marques I, Ribeiro-Barros AI (2020). Genetic diversity among cowpea (Vigna unguiculata (L.) Walp.) landraces suggests central Mozambique as an important hotspot of variation. Agronomy 10(12):1893.
Crossref

 

Harland SC (1919). Inheritance of certain characters in the cowpea (Vigna sinensis). Journal of Genetics 8(2):101-132.
Crossref

 

Haruna P, Asare AT, Kusi F (2020). Assessment of Striga gesnerioides (Willd.) resistance and genetic characterization of forty-six cowpea (Vigna unguiculata (L.) Walp.) genotypes in Ghana. International Journal of Agronomy 2020:1-9.
Crossref

 

Herniter IA, Lo R, Muñoz-Amatriaín M, Lo S, Guo YN, Huynh BL, Lucas M, Jia Z, Roberts PA, Lonardi S, Close TJ (2019). Seed Coat Pattern QTL and Development in Cowpea (Vigna unguiculata [L.] Walp.). Frontiers in Plant Science 10:1346. bioRxiv514455.
Crossref

 

Huttner E, Wenzl P, Akbari M, Caig V, Carling J, Cayla C, Evers M, Jaccoud D, Peng K, Patarapuwadol S (2005). Diversity arrays technology: a novel tool for harnessing the genetic potential of orphan crops. Discovery to Delivery: BioVision Alexandria 2004, Proceedings of the 2004 Conference of The World Biological Forum. CABI Publishing: UK. 145-155

 

Huynh BL, Ehlers JD, Huang BE, Muñoz-Amatriaín M, Lonardi S, Santos JRP, Ndeve A, Batieno BJ, Boukar O, Cisse N, Drabo I, Fatokun C, Kusi F, Agyare RY, Guo YN, Herniter I, Lo S, Wanamaker SI, Xu S, Close TJ, Roberts PA (2018). A multi-parent advanced generation inter-cross (MAGIC) population for genetic analysis and improvement of cowpea (Vigna unguiculata L. Walp.). The Plant Journal 93(6):1129-1142.
Crossref

 

Huynh BL, Ehlers JD, Ndeve A, Wanamaker S, Lucas MR, Close TJ, Roberts PA (2015). Genetic mapping and legume synteny of aphid resistance in African cowpea (Vigna unguiculata L. Walp.) grown in California. Molecular Breeding 35:1-9.
Crossref

 

Huynh BL, Matthews WC, Ehlers JD, Lucas MR, Santos JRP, Ndeve A, Close TJ, Roberts PA (2016). A major QTL corresponding to the Rk

 

locus for resistance to root-knot nematodes in cowpea (Vigna unguiculata L. Walp.). Theoretical and Applied Genetics 129:87-95.

 

Ibié GT, Jean BT, Inoussa D, Joseph TBB, Elisabeth PZ, Mahamadou S, Paco S, Erik WO, Michael PT (2021). Inheritance and detection of QTL in cowpea resistance to brown blotch disease. Journal of Plant Breeding and Crop Science 13(3):123-135.
Crossref

 

Jaeger SR, Antúnez L, Ares G, Swaney-Stueve M, Jin D, Harker FR (2018). Quality perceptions regarding external appearance of apples: Insight s from experts and consumers in four countries. Postharvest Biology and Technology 146:99-107.
Crossref

 

Kongjaimun A, Kaga A, Tomooka N, Somta P, Shimizu T, Shu Y, Isemura T, Vaughan DA, Srinives P (2012). An SSR-based linkage map of yardlong bean (Vigna unguiculata (L.) Walp. subsp. unguiculata Sesquipedalis Group) and QTL analysis of pod length. Genome 55(2):81-92.
Crossref

 

Kostyla AS, Clydesdale FM, McDaniel MR (1978). The psychophysical relationships between color and flavor. Critical Reviews in Food Science & Nutrition 10(3):303-321. Kusi F, Padi FK, Obeng-Ofori D, Asante SK, Agyare RY, Sugri I, Timko MP, Koebner R, Huynh BL, Santos JRP, Close TJ, Roberts PA (2018). A novel aphid resistance locus in cowpea identified by combining SSR and SNP markers. Plant Breeding 137(2):203-209.
Crossref

 

Lamaoui M, Jemo M, Datla R, Bekkaoui F (2018). Heat and drought stresses in crops and approaches for their mitigation. Frontiers in Chemistry 6:26.
Crossref

 

Langyintuo AS, Lowenberg-DeBoer J, Faye M, Lambert D, Ibro G, Moussa B, Kergna A, Kushwaha S, Musa S, Ntoukam G (2003). Cowpea supply and demand in West and Central Africa. Field Crops Research 82(2-3):215-231.
Crossref

 

Lioi L, Morgese A, Cifarelli S, Sonnante G (2019). Germplasm collection, genetic diversity and on-farm conservation of cowpea [Vigna unguiculata (L.) Walp.] landraces from Apulia region (southern Italy). Genetic Resources and Crop Evolution 66(1):165-175.
Crossref

 

Lo S, Muñoz-Amatriaín M, Boukar O, Herniter I, Cisse N, Guo YN, Roberts PA, Xu S, Fatokun C, Close TJ (2018). Identification of QTL controlling domestication-related traits in cowpea (Vigna unguiculata L. Walp). Scientific Reports 8(1):6261.
Crossref

 

Lo S, Muñoz-Amatriaín M, Hokin SA, Cisse N, Roberts PA, Farmer AD, Xu S, Close TJ (2019). A genome-wide association and meta-analysis reveal regions associated with seed size in cowpea [Vigna unguiculata (L.) Walp.]. Theoretical and Applied Genetics 132:3079-3087.
Crossref

 

Lucas MR, Ehlers JD, Huynh BL, Diop NN, Roberts PA, Close TJ (2013a). Markers for breeding heat-tolerant cowpea. Molecular Breeding 31:529-536.
Crossref

 

Lucas MR, Huynh BL, Vinholes P da S, Cisse N, Drabo I, Ehlers JD, Roberts PA, Close TJ (2013b). Association studies and legume synteny reveal haplotypes determining seed size in Vigna unguiculata. Frontiers in Plant Science 4:95.
Crossref

 

Malviya N, Sarangi BK, Yadav MK, Yadav D (2012). Analysis of genetic diversity in cowpea (Vigna unguiculata L.Walp.) cultivars with random amplified polymorphic DNA markers. Plant Systematics and Evolution 298:523-526.
Crossref

 

Mbeyagala EK, Mukasa BS, Tukamuhabwa P, Bisikwa J (2014). Evaluation of cowpea genotypes for virus resistance under natural conditions in Uganda. Journal of Agricultural Science 6(10)176-187.
Crossref

 

Meena HK, Ram Krishna K, Singh B (2015). Character associations between seed yield and its component traits in cowpea [Vigna unguiculata (L.) Walp.]. Indian Journal of Agricultural Research 49(6):567-570.
Crossref

 

Miesho B, Hailay M, Msiska U, Bruno A, Malinga GM, Obia Ongom P, Edema R, Gibson P, Rubaihayo P, Kyamanywa S (2019). Identification of candidate genes associated with resistance to bruchid (Callosobruchus maculatus) in cowpea. Plant Breeding 138(5):605-613.
Crossref

 

Muchero W, Ehlers JD, Close TJ, Roberts PA (2009). Mapping QTL for drought stress-induced premature senescence and maturity in cowpea [Vigna unguiculata (L.) Walp.]. Theoretical and Applied Genetics 118:849-863.
Crossref

 

Muchero W, Ehlers JD, Close TJ, Roberts PA (2011). Genic SNP markers and legume synteny underlying QTL for M. phaseolina resistance and maturity in cowpea. BMC Genomics 12:1-14
Crossref

 

Muchero W, Ehlers JD, Roberts PA (2010). QTL analysis for resistance to foliar damage caused by Thrips tabaci (this may not be correct!!) and Frankliniella schultzei (Thysanoptera: Thripidae) feeding in cowpea [Vigna unguiculata (L.) Walp.]. Molecular Breeding 25:47-56.
Crossref

 

Muchero W, Roberts PA, Diop NN, Drabo I, Cisse N, Close TJ, Muranaka S, Boukar O, Ehlers JD (2013). Genetic architecture of delayed senescence, biomass, and grain yield under drought stress in cowpea. PLoS One 8:70041.
Crossref

 

Muñoz-Amatriaín M, Lo S, Herniter IA, Boukar O, Fatokun C, Carvalho M, Castro I, Guo YN, Huynh BL, Roberts PA, Carnide V, Close TJ (2021). The UCR Minicore: a resource for cowpea research and breeding. Legume Science 3:1-15.
Crossref

 

Muñoz-Amatriaín M, Mirebrahim H, Xu P, Wanamaker SI, Luo MC, Alhakami H, Alpert M, Atokple I, Batieno BJ, Boukar O, Bozdag S, Cisse N, Drabo I, Ehlers JD, Farmer A, Fatokun C, Gu YQ, Guo YN, Huynh BL, Jackson SA, Kusi F, Lawley CT, Lucas MR, Ma Y, Timko MP, Wu J, You F, Barkley NA, Roberts PA, Lonardi S, Close TJ (2017). Genome resources for climate-resilient cowpea, an essential crop for food security. The Plant Journal 89(5):1042-1054.
Crossref

 

Nagalakshmi RM, Kavitha MJ, Kumar CR, Usha KR (2017). Genetic diversity in cowpea (Vigna unguiculata (L.) Walp.), using RAPD markers. Journal of Pharmacognosy and Phytochemistry 6(6):1632-1635.

 

Naidoo R, Watson GMF, Derera J, Tongoona P, Laing MD (2012). Marker-assisted selection for low phytic acid (lpa1-1) with single nucleotide polymorphism marker and amplified fragment length polymorphisms for background selection in a maize backcross breeding programme. Molecular Breeding 30:1207-1217.
Crossref

 

Nameirakpam B, Khanna V (2018). Studies on crossability and genetic diversity in cowpea (Vigna unguiculata L. Walp.). International Journal of Environmental Sciences & Natural Resources 13(1):08-16.
Crossref

 

Nkhoma N, Shimelis H, Laing MD, Shayanowako A, Mathew I (2020). Assessing the genetic diversity of cowpea [Vigna unguiculata (L.) Walp.] germplasm collections using phenotypic traits and SNP markers. BMC Genetics 21(1):1-16.
Crossref

 

Nkongolo KK (2003). Genetic characterization of Malawian cowpea (Vigna unguiculata (L.) Walp) landraces: Diversity and gene flow among accessions. Euphytica 129:219-228.

 

Ohlson EW, Thio GI, Sawadogo M, Sérémé P, Timko MP (2018). Quantitative trait loci analysis of brown blotch resistance in cowpea variety KN1. Molecular Breeding 38:1-8.
Crossref

 

Ohlson EW, Timko MP (2020). Race structure of cowpea witchweed (Striga gesnerioides) in West Africa and its implications for Striga resistance breeding of cowpea. Weed Science 68(2):125-133.
Crossref

 

Oikeh S, Niang A, Abaidoo R, Houngnandan P, Futakuchi K, Koné B, Touré A (2012). Enhancing rice productivity and soil nitrogen using dual-purpose cowpea-NERICA® Rice sequence in degraded savanna. Journal of Life Sciences 6:1237-1250.

 

Omo-Ikerodah EE, Fawole I, Fatokun CA (2008). Genetic mapping of quantitative trait loci (QTLs) with effects on resistance to flower bud thrips (Megalurothrips sjostedti) identified in recombinant inbred lines of cowpea (Vigna unguiculata (L.) Walp). African Journal of Biotechnology 7(3):263-270.

 

Ouédraogo JT, Gowda BS, Jean M, Close TJ, Ehlers JD, Hall AE, Gillaspie AG, Roberts PA, Ismail AM, Bruening G, Gepts P, Timko MP, Belzile FJ (2002b). An improved genetic linkage map for cowpea (Vigna unguiculata L.) Combining AFLP, RFLP, RAPD, biochemical markers, and biological resistance traits. Genome 45(1):175-188.
Crossref

 

Ouédraogo JT, Tignegre JB, Timko MP, Belzile FJ (2002a). AFLP markers linked to resistance against Striga gesnerioides race 1 in cowpea (Vigna unguiculata). Genome 45(5):787-793.
Crossref

 

Owusu EY, Akromah R, Denwar NN, Adjebeng-Danquah J, Kusi F, Haruna M (2018). Inheritance of early maturity in some cowpea (Vigna unguiculata (L.) Walp.) genotypes under rain fed conditions in Northern Ghana. Advances in Agriculture 2018:1-10.
Crossref

 

Padulosi S, Ng NQ (1997). Origin, taxonomy and morphology of Vigna unguiculata (L.) Walp," in Advances in Cowpea Research. Co-publication of International Institute of Tropical Agriculture (IITA) and Japan International Research Center for Agricultural Sciences (JIRCAS). Eds. Singh BB, Mohan Raj DR, Dashiell KE, Jackai LEN. (Ibadan, Nigeria: IITA) pp. 1-12.

 

Pan L, Wang N, Wu Z, Guo R, Yu X, Zheng Y, Xia Q, Gui S, Chen C (2017). A high density genetic map derived from RAD sequencing and its application in QTL analysis of yield-related traits in Vigna unguiculata. Frontiers in Plant Science 8:1544.
Crossref

 

Pidigam S,Babu M, Srinivas N, Narshimulu G, Srivani A, Hari Y, Lavanya B, Geetha A (2019). Assessment of genetic diversity in yardlong bean (Vigna unguiculata (L.) Walp. subsp. sesquipedalis Verdc.) germplasm from India using RAPD markers. Genetic Resources and Crop Evolution 66:1231-1242.
Crossref

 

Pottorff M, Ehlers JD, Fatokun C, Roberts PA, Close TJ (2012b). Leaf morphology in Cowpea [Vigna unguiculata (L.) Walp.]: QTL analysis, physical mapping and identifying a candidate gene using synteny with model legume species. BMC Genomics 13:1-12.
Crossref

 

Pottorff M, Roberts PA, Close TJ, Lonardi S, Wanamaker S, Ehlers JD (2014). Identification of candidate genes and molecular markers for heat-induced brown discoloration of seed coats in cowpea [Vigna unguiculata (L.) Walp.]. BMC Genomics 15:1-11.
Crossref

 

Pottorff M, Wanamaker S, Ma YQ, Ehlers JD, Roberts PA, Close TJ (2012a). Genetic and physical mapping of candidate genes for resistance to fusarium oxysporum f.sp. tracheiphilum race 3 in cowpea [Vigna unguiculata (L.) Walp.]. PLoS One 7:41600.
Crossref

 

Santos JRP, Ndeve AD, Huynh BL, Matthews WC, Roberts PA (2018). QTL mapping and transcriptome analysis of cowpea reveals candidate genes for root-knot nematode resistance. PloS One 13(1):1-22.
Crossref

 

Sarr A, Bodian A, Gbedevi KM, Ndir KN, Ajewole OO, Gueye B, Foncéka D, Diop EAMC, Diop BM, Cissé N, Diouf D (2021). Genetic diversity and population structure analyses of wild relatives and cultivated cowpea (Vigna unguiculata (L.) Walp.) from Senegal using simple sequence repeat markers. Plant Molecular Biology Reporter 39:112-124.
Crossref

 

Seo E, Kim K, Jun TH, Choi J, Kim SH, Muñoz-Amatriaín M, Sun H, Ha BK (2020). Population Structure and Genetic Diversity in Korean Cowpea Germplasm Based on SNP Markers. Plants 9 (11909):1190.
Crossref

 

Singh BB, Ajeigbe HA, Tarawali SA, Fernandez-Rivera S, Abubakar M (2003). Improving the production and utilization of cowpea as food and fodder. Field Crops Research 84(1-2):169-177.
Crossref

 

Sodedji FAK, Agbahoungba S, Agoyi EE, Kafoutchoni MK, Choi J, Nguetta SPA, Assogbadjo AE, Kim HY (2021). Diversity, population structure, and linkage disequilibrium among cowpea accessions. The Plant Genome 14(3):1-15.
Crossref

 

Song XJ, Huang W, Shi M, Zhu MZ, Lin HX (2007). A QTL for rice grain width and weight encodes a previously unknown RING-type E3 ubiquitin ligase. Nature Genetics 39(5):623-630.
Crossref

 

Spillman WJ (1911). Inheritance of the "Eye" in Vigna. The American Naturalist 45(537):513-523.
Crossref

 

Tignegre J (2010). Genetic study of cowpea (Vigna unguiculata (L.) Walp.) resistance to Striga gesnerioides (Willd.) in Burkina Faso. University of Ouagadougou. A thesis submitted in partial fulfillment of requirements for PhD. February 1-170.

 

Timko M, Andargie M, Pasquet RS, Muluvi GM, Timko MP (2013). Quantitative trait loci analysis of flowering time related traits identified in recombinant inbred lines of cowpea (Vigna unguiculata). Genome 56(5):289-294.
Crossref

 

Ubi B, Hodeba M, George T (2000). Construction of a genetic linkage map and QTL analysis using a recombinant inbred population derived from an intersupspecific cross of cowpea (Vigna unguiculata (L.) Walp.). Breeding Science 50(3):161-172.
Crossref

 

Wamalwa EN, Muoma J, Wekesa C (2016). Genetic diversity of cowpea (Vigna unguiculata (L.) Walp.) accession in Kenya Gene Bank based on simple sequence repeat markers. International Journal of Genomics 2016.
Crossref

 

Wu X, Wang B, Wu S, Li S, Zhang Y, Wang Y, Li Y, Wang J, Wu X, Lu Z, Li G (2021). Development of a core set of single nucleotide polymorphism markers for genetic diversity analysis and cultivar fingerprinting in cowpea. Legume Science 3(3):1-11.
Crossref

 

Xiong H, Shi A, Mou B, Qin J, Motes D, Lu W, Ma J, Weng Y, Yang W, Wu D (2016). Genetic diversity and population structure of cowpea (Vigna unguiculata (L.). Walp.). PLoS One 11:e0160941.
Crossref

 

Xu P, Wu X, Muñoz-Amatriaín M, Wang B, Wu X, Hu Y, Huynh BL, Close TJ, Roberts PA, Zhou W, Lu Z, Li G (2017). Genomic regions, cellular components and gene regulatory basis underlying pod length variations in cowpea (V. unguiculata (L.) Walp.). Plant Biotechnology Journal 15(5):547-557.
Crossref

 

Xu P, Wu X, Wang B, Hu T, Lu Z, Liu Y, Qin D, Wang S, Li G (2013). QTL mapping and epistatic interaction analysis in asparagus bean for several characterized and novel horticulturally important traits. BMC Genetics 14:1-10.
Crossref

 

Xu P, Wu X, Wang B, Liu Y, Ehlers JD, Close TJ, Roberts PA, Diop NN, Qin D, Hu T, Lu Z, Li G (2011). A SNP and SSR based genetic map of asparagus bean (Vigna. unguiculata ssp. sesquipedialis) and comparison with the broader species. PloS One 6(1):e15952.
Crossref

 

Zannou A, Kossou DK, Ahanchédé A, Zoundjihékpon J, Agbicodo E, Struik PC, Sanni A (2008). Genetic variability of cultivated cowpea in Benin assessed by random amplified polymorphic DNA. African Journal of Biotechnology 7(24):4407-4414.

 

Zhao Q, Shi X, Yan L, Yang C, Liu C, Feng Y, Zhang M, Yang Y, Liao H (2021). Characterization of the common genetic basis underlying seed hilum size, yield, and quality traits in soybean. Frontiers in Plant Science 12:1-10.
Crossref

 

Zinov'ev DV, Sole P (2004). Quaternary codes and biphase sequences from Z8-codes. Problems of Information Transmission 40(2):147-58.
Crossref