Journal of
Plant Breeding and Crop Science

  • Abbreviation: J. Plant Breed. Crop Sci.
  • Language: English
  • ISSN: 2006-9758
  • DOI: 10.5897/JPBCS
  • Start Year: 2009
  • Published Articles: 409

Full Length Research Paper

Genetic variability and correlation studies in the fluted pumpkin (Telfairia occidentalis Hook F.)

Fayeun L. S.1*, A. C. Odiyi1, S. C. O. Makinde2 and O. P. Aiyelari1
  1Department of Crop, Soil and Pest Management, the Federal University of Technology, P. M. B. 704, Akure, Ondo State, Nigeria. 2Department of Botany, Faculty of Science, Lagos State University, Ojo Campus, P. O. Box 001, LASU Post Office, Ojo, Lagos State, Nigeria.
Email: [email protected]

  •  Accepted: 24 May 2012
  •  Published: 30 November 2012

Abstract

 

Thirty-five genotypes of the fluted pumpkin (Telfairia occidentalis) collected from seven states in Southern Nigeria were evaluated for ten agronomic characters. The results obtained showed considerable variation among the genotypes for all characters studied. Low level of environmental influence was observed in the expression of all the characters studied except number of branches per plant and internode length. High heritability estimates were accompanied by high expected genetic gain in vine length, fresh leaf weight, vine weight, number of leaves per plant and marketable leaf yield. Vine length had the highest broad sense heritability and number of branches had the least value (75.00 and 29.28%, respectively). Correlation analysis showed significant and positive association among all the ten characters. Direct selection for improvement of these traits may be carried out on these characters, as their phenotypic expression would be good indicators of their genotypic potentials.

 

Key words: Coefficients of variation, genetic advance, heritability, Telfairia occidentalis.