You are here: Home
/ Publication Information
Title: Heritability and genetic correlations for volume, foxtails, and other characteristics of Caribbean pine in Puerto Rico
Author: Ledig, F. Thomas; Whitmore, J.L.;
Source: Silvae Genetica 30:86-94
Publication Series: Miscellaneous Publication
Description: Caribbean pine is an important exotic being bred throughout the tropics, but published estimates are lacking for heritability of economically important traits and the genetic correlations between them. Based on a Puerto Rican trial of 16 open-pollinated parents of var. hondurensis selected in Belize, heritabilities for a number of characteristics ranged from 0.04 to 0.53. Volume had a moderate heritability of 0.11 while bark thickness had a high heritability of 0.53. These values are similar to those for southern pines, and indicate the potential for substantial gains from selection of individuals within Puerto Rican plantations. Family variation within provenance for foxtail growth form, a subject of much speculation, was tested and found to be 0.17, a value indicating that selection against foxtails could also be effective. Phenotypic correlations between traits were weak, but additive genetic correlations appeared stronger, so selection for one characteristic must consider correlated responses for others.
Keywords: Pinus caribaea, progeny tests, bark thickness, stem form, branching characteristics
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
XML: View XML
Ledig, F. Thomas; Whitmore, J.L. 1981. Heritability and genetic correlations for volume, foxtails, and other characteristics of Caribbean pine in Puerto Rico. Silvae Genetica 30:86-94
Get the latest version of the Adobe Acrobat reader or Acrobat Reader for Windows with Search and Accessibility