International network for natural sciences – research journal
  • mendeley icon
  • linkedin icon
  • google plus icon
  • twitter icon
  • google scholar icon
  • facebook icon

Genotypic diversity of cowpea from lower eastern Kenya

By: Munyao Rose Kambua, Mamati Edward George, Githiri Stephen Mwangi, Ateka Elijah Miinda

Key Words: Vigna Unguiculata, Diversity, Climate adaptation, Crop selection, Marginal areas.

Int. J. Agron. Agri. Res. 14(5), 9-19, May 2019.

Certification: ijaar 2019 0183 [Generate Certificate]

Abstract

Cowpea is an important pulse crop widely grown in marginal areas of Kenya. There is limited information on diversity among the Kenyan cowpea as it is widely grown from landraces. The aim of this study was to evaluate variation among cowpea landraces obtained mainly from lower eastern region and other marginal areas of Kenya. One hundred and ten cowpea accessions were planted in a Randomized Complete Block Design with three replications. Quantitative and qualitative data were collected and analyzed. Even distribution of accessions across traits of the characters was observed for immature pod color, leaf color, seed shape and testa texture, whereas uneven distribution was observed for terminal leaflet shape, raceme position, pod attachment, pod curvature, mature pod color, flower color and eye color. ANOVA revealed significant differences (p=0.05) of accessions for number of days to 50% emergence, pod length, number of pods per plant and the number of seeds per pod. The first five principal components; 19.8, 18, 15.9, 12.4 and 11.22 respectively accounted for 77% of total variation. Correlation analysis revealed significant relationship (p=0.05) for 50% emergence to 50% flowering, number of pods per plant, terminal leaflet length and terminal leaflet width. The accessions were grouped into two, with one cluster having 103 accessions that included all registered varieties. Therefore, cowpeas grown in marginal lower eastern region of Kenya are variable and closely related to the registered cowpea varieties. The set of accessions could therefore be used for identification of preferred lines for this region.

| Views 64 |

Genotypic diversity of cowpea from lower eastern Kenya

Aremu MO, Ogunlade I, Olonisakin A. 2007. Fatty Acid and Amino Acid Composition of Protein Concentrate from Cashew Nut (Anarcadium occidentale) Grown in Nasarawa State, Nigeria 6(5), 419-423.

Ashworth S, Whiley K. 2012. Seed to Seed: Seed Saving and Growing Techniques for the Vegetable Gardener. Chelsea Green Publishing, California.

Bennet-Lartey SO, Ofori K. 1999. Variability studies in some qualitative characters of cowpea (Vigna unguiculata (L) Walp) accessions from four cowpea growing regions in Ghana. Ghana J.Agric. Sci 32, 3-9.

Cobbinah FA, Asante IK. 2011. Characterization , evaluation and selection of cowpea (Vigna unguiculata (L.) Walp ) Accessions with desirable traits from eight regions of Ghana. ARPN Journal of Agricultural and Biological Science 6(7), 21-32.

Doumbia IZ, Akromah R, Asibuo JY. 2013. Comparative Study of Cowpea Germplasms Diversity From Ghana and Mali Using Morphological Characteristics. Journal of Plant Breeding and Genetics 01(03), 139-147. Retrieved from http://www.escijournals.net/JPBG

Garko MS, Mohammed IB, Fulani MS. 2016. Performance of Cowpea [Vigna Unguiculata (L.) Walp.] Varieties as Influenced by Weed Control Treatments in the Sudan Savanna of Nigeria. International Journal of Scientific and Research Publications 6(5), 134-140.

Gómez C. 2004. INPho-Post-harvest Compendium. Cowpea: Post-harvest Operations. FAO, Rome, Italy.

Gonné S, Venasius WL, Laminou A. 2013. Characterization of Some Traditional Cowpea Varieties Grown by Farmers in the Soudano-Sahelian Zone of Cameroon. International journal of Agriculture and Forestry 3(4), 170-177.

IBPGR. 1987. International Board for Plant Genetic Resources: Descriptors for cowpea. Secretariat, Rome, Italy. Zhurnal Eksperimental’noi I Teoreticheskoi Fiziki, 1–30.

http://doi.org/10.1007 /s13398-014-0173-7.2

Jaetzold R, Schmidt H. 1983. Farm Management handbook of Kenya 2, 245-285.

Kephis. 2019. National Crop Variety List-Kenya www.kephis.org/images/uploads/upnvlist.pdf. Kephis. Accessed on March 22, 2019.

Kuruma RW, Kiplagat O, Ateka E, Owuoche G. 2008. Genetic diversity of kenyan cowpea accessions based on morphological and microsatellite markers. East African Agricultural and Forestry Journal 76, pp 3-4.

Muniu FK. 2017. Characterization and Evaluation of Local Cowpea Accessions and Their Response to Organic and Inorganic Nitrogen Fertilizers in Coastal Kenya: Msc. Thesis, Department of Plant Science and Crop Protection, University of Nairobi, Kenya.

MuñozAmatriaín M, Hamid M, Pei X, Steve IW, MingCheng L, Hind A, Matthew A, Ibrahim A, Benoit JB, Ousmane B, Serdar B, Ndiaga C, Issa D, Jeffrey DE, Andrew F, Christian F, Yong QG, YiNing G, BaoLam H, Scott AJ, Francis K, Cynthia TL, Mitchell RL, Yaqin M, Michael PT, Jiajie W, Frank Y, Noelle AB, Philip AR, Stefano L, Timothy J. 2017. Genome resources for climate-resilient cowpea, an essential crop for food security 1042-1054. http://doi.org/10.1111/tpj.13404

Muthoni J, Nyamongo DO. 2010. ‘Traditional Food Crops and Their Role in Food and Nutritional Security in Kenya. Journal of Agricultural & Food Information 11(1), 36-50.

Nkouannessi M. 2005. The genetic, morphological and physiological evaluation of African Cowpea Genotypes: Ms.Sc. thesis, University of the Free State, Bloemfontein.

Pandey RK, Ngarm AT. 1985. Agronomic research advances in Asia. In:S.R. Singh and K.O. Rachie (Eds). Cowpea Research, Production and Utilization. John Wiley and sons, UK pp. 299-306.

Recha J, Kinyangi J, Omondi H. 2013. Climate Related Risks and Opportunities for Agricultural Adaptation in Semi-Arid Eastern Kenya. CCAFS East Africa Program project report. Copenhagen, Denmark: CGIAR Research Program on Climate Change, Agriculture and Food Security (CCAFS). . https://ccafs.cgiar.org/sites/default/files/assets/doc/climate_related_risk_and_opportunities.pdf. Accessed on Mar. 22, 19

Sangwan RS, Lodhi GP. 1998. Inheritance of flower colour and pod colour in cowpea (Vigna unguiculata L.Walp). Euphytica 102, 191-193

Sariah JE. 2010. Enhancing cowpea (Vigna unguiculata L.) production through Insect pest resistant line in East Africa. PhD thesis, University of Copenhagen, Denmark.

Singh BB, Ishiyaku MF. 2000. Genetics of rough seed coat texture in cowpea. Journal of Heredity 91, 170-174

Stoilova T, Pereira G. 2013. Assessment of the genetic diversity in a germplasm collection of cowpea (Vigna unguiculata ( L .) Walp.) using morphological traits. African Journal of Agricultural Research 8(2), 208-215.

http://doi.org/10.5897/AJAR12.1633

Munyao Rose Kambua, Mamati Edward George, Githiri Stephen Mwangi, Ateka Elijah Miinda.
Genotypic diversity of cowpea from lower eastern Kenya.
Int. J. Agron. Agri. Res. 14(5), 9-19, May 2019.
https://innspub.net/ijaar/genotypic-diversity-cowpea-lower-eastern-kenya/
Copyright © 2019
By Authors and International Network for
Natural Sciences (INNSPUB)
https://innspub.net
brand
innspub logo
english language editing
  • CALL FOR PAPERS
    CALL FOR PAPERS
    Publish Your Article
  • CALL FOR PAPERS
    CALL FOR PAPERS
    Submit Your Article
INNSPUB on FB
Email Update