African Journal of Plant Science
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Article Number - 5877C1264257


Vol.11(6), pp. 185-189 , June 2017
DOI: 10.5897/AJPS2015.1324
ISSN: 1996-0824



Full Length Research Paper

Genetic variability, heritability and variance components of some yield and yield related traits in second backcross population (BC2) of cassava



Favour Ewa
  • Favour Ewa
  • National Root Crops Research Institute (NRCRI), Umudike, PMB 7006, Umuahia, Abia State, Nigeria
  • Google Scholar
Emeka Nwofia
  • Emeka Nwofia
  • Michael Okpara University of Agriculture, Umudike, Abia State, Nigeria
  • Google Scholar
Chiedozie Egesi
  • Chiedozie Egesi
  • National Root Crops Research Institute (NRCRI), Umudike, PMB 7006, Umuahia, Abia State, Nigeria
  • Google Scholar
Bunmi Olasanmi
  • Bunmi Olasanmi
  • Department of Agronomy, University of Ibadan, Nigeria
  • Google Scholar
Emmanuel Okogbenin
  • Emmanuel Okogbenin
  • African Agricultural Technology foundation (AATF), Nairobi, Kenya
  • Google Scholar







 Received: 05 June 2015  Accepted: 04 August 2016  Published: 30 June 2017

Copyright © 2017 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


Second backcross population developed from crosses between wild relative Manihot walkarae and Manihot esculenta were evaluated using randomized complete block design at National Root Crops Research Institute (NRCRI) Umudike in 2011 and 2012 cropping seasons. The objective of this study was to assess the extent of genetic variability, heritability, variance components of some yield, yield related traits, pest and diseases from BC2 population. Combined analysis of variance showed significant differences among the genotypes for all the traits evaluated. The phenotypic coefficient of variation (PCV)  in the BC2 population was higher than the corresponding genotypic coefficient of variation (GCV) for all the traits mearsured indicating the effect of environment on the expression of these traits. High heritability was recorded in some of the traits evaluated. This will aid the phenotypic selection for these traits in cassava.

 

Key words: BC2 population, cassava genotypes, heritability, genetic variability, phenotyic coefficient of variation, genotypic coefficient of variation

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APA Ewa, F., Nwofia, E., Egesi, C., Olasanmi, B., & Okogbenin, E. (2017). Genetic variability, heritability and variance components of some yield and yield related traits in second backcross population (BC2) of cassava. African Journal of Plant Science, 11(6), 185-189.
Chicago Favour Ewa, Emeka Nwofia, Chiedozie Egesi, Bunmi Olasanmi, and Emmanuel Okogbenin,. "Genetic variability, heritability and variance components of some yield and yield related traits in second backcross population (BC2) of cassava." African Journal of Plant Science 11, no. 6 (2017): 185-189.
MLA Favour Ewa, et al. "Genetic variability, heritability and variance components of some yield and yield related traits in second backcross population (BC2) of cassava." African Journal of Plant Science 11.6 (2017): 185-189.
   
DOI 10.5897/AJPS2015.1324
URL http://academicjournals.org/journal/AJPS/article-abstract/5877C1264257

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