African Journal of
Agricultural Research

  • Abbreviation: Afr. J. Agric. Res.
  • Language: English
  • ISSN: 1991-637X
  • DOI: 10.5897/AJAR
  • Start Year: 2006
  • Published Articles: 6576

Full Length Research Paper

Heritability estimates, correlation and path analysis studies for nut and kernel characters of Pecan (Carya illinoensis [Wang] K. Koch)

K. Kumar1*, Manpreet Nagi1, Dinesh Singh2, R. Kaur2 and R. K. Gupta3
1Department of Fruit Science, University of Horticulture and Forestry, Nauni - Solan (H.P.) - 173 230, India. 2Department of Biotechnology, University of Horticulture and Forestry, Nauni - Solan (H.P.) - 173 230, India. 3Department of Basic Sciences, University of Horticulture and Forestry, Nauni - Solan (H.P.) - 173 230, India.
Email: [email protected]

  •  Accepted: 10 May 2013
  •  Published: 16 May 2013

Abstract

This study was undertaken to work out heritability estimates, correlation and path analysis on 34 pecan selections and three standard cultivars Western Schley, Mahan, and Burkett. High heritability estimates coupled with low genetic advance for most nut and kernel characters indicate higher influence of environment and presence of non-additive gene action suggesting that selection in pecan may not be effective. However, relatively higher values of genetic advance with high heritability recorded in kernel recovery, fat content and nut length indicates that the selection can be exercised on the basis of these characters. Significant correlations have been observed between most of the nut and kernel characters. The positive correlation towards nut yield with other desirable characters like nut weight, kernel weight, nut length and kernel length would be favourable to breeders for their simultaneous genetic improvement.

Key words: Pecan, correlations, genetic variability, kernels, nuts, path analysis.