African Journal of Plant Science
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Article Number - A6ACEF550740


Vol.9(2), pp. 65-74 , February 2015
DOI: 10.5897/AJPS2014.1202
ISSN: 1996-0824



Full Length Research Paper

In-situ morphological characterization of coconut in the Coastal Lowlands of Kenya



Maurice E. Oyoo*
  • Maurice E. Oyoo*
  • Egerton University, Department of Crops, Horticulture and Soil Sciences, P.O. Box 536-20115 Egerton, Kenya.
  • Google Scholar
Muhammed Najya
  • Muhammed Najya
  • Pwani University, Department of Chemistry and Biochemistry, P.O Box 195-80108, Kilifi, Kenya.
  • Google Scholar
Stephen M. Githiri
  • Stephen M. Githiri
  • Jomo Kenya University of Agriculture and Technology, Horticulture Department, P.O. Box 62000-00200 Nairobi, Kenya.
  • Google Scholar
Pascal O. Ojwang
  • Pascal O. Ojwang
  • Egerton University, Department of Crops, Horticulture and Soil Sciences, P.O. Box 536-20115 Egerton, Kenya.
  • Google Scholar
Francis K. Muniu
  • Francis K. Muniu
  • Kenya Agricultural Research Institute P.O Box 16-80109 Mtwapa, Kenya.
  • Google Scholar
Emmanuel Masha
  • Emmanuel Masha
  • Kenya Coconut Development Authority, P.O. Box 84351, Nkrumah Rd Mombasa, Kenya.
  • Google Scholar
James O. Owuoche
  • James O. Owuoche
  • Egerton University, Department of Crops, Horticulture and Soil Sciences, P.O. Box 536-20115 Egerton, Kenya.
  • Google Scholar







 Received: 17 June 2014  Accepted: 21 January 2015  Published: 28 February 2015

Copyright © 2015 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


Characterization of in situ coconut (Cocos nucifera L.) genotypes using morphological descriptors is of primary importance for genetic resources. Variations in five traits were recorded on 48 selected coconut palms located at 0 to 177 m above sea level in the Coastal Lowlands of Kenya. The objective of our study was to characterize coconut palms in the coastal Kenya using morphological markers. Data was recorded on palms that included tall, dwarf and hybrid varieties. Data was analyzed using Genstat Ver 14.2 software. Phylogenetic tree construction, using the neighbour joining method, revealed that the germplasm fell into three major clusters comprising of 2, 25 and 21 genotypes, respectively. Principal component analysis (PCA) showed that the first component (CP1) accounted for 65.54% of the total variation and was associated with the number of green leaves. The second component (PC2) explained 19.71% of the total variation and was associated with stem height. The results from this study indicate that morphological variation for coconut germplasm at the Kenyan coast exists for both qualitative and quantitative characters. Coconut palms did not cluster on the basis of their origin based on the counties grown.

 

Key words: Morphological characterization, Cocos nucifera L., variation, genetic resources, genetic diversity, cluster analysis.

 

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APA Oyoo, M. E., Najya, M., Githiri, S. M., Ojwang, P. O., Muniu, F.K., Masha, E., & Owuoche, J. O. (2015). In-situ morphological characterization of coconut in the Coastal Lowlands of Kenya. African Journal of Plant Science, 9(2), 65-74.
Chicago Maurice E. Oyoo, Muhammed Najya, Stephen M. Githiri, Pascal O. Ojwang, Francis K. Muniu, Emmanuel Masha and James O. Owuoche. "In-situ morphological characterization of coconut in the Coastal Lowlands of Kenya." African Journal of Plant Science 9, no. 2 (2015): 65-74.
MLA Maurice E. Oyoo, et al. "In-situ morphological characterization of coconut in the Coastal Lowlands of Kenya." African Journal of Plant Science 9.2 (2015): 65-74.
   
DOI 10.5897/AJPS2014.1202
URL http://www.academicjournals.org/journal/AJPS/article-abstract/A6ACEF550740

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