About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in CS

  1. Vol. 22 No. 3, p. 540-542
     
    Received: May 14, 1981


 View
 Download
 Alerts
 Permissions
 Share

doi:10.2135/cropsci1982.0011183X002200030024x

Genotype ✕ Environment Interaction Bias to Parent-Offspring Regression Heritability Estimates1

  1. M. D. Casler2

Abstract

Abstract

Parent-offspring regression is a commonly-used technique for estimating narrow sense herltability of quantitative characters in crop species. However, regression of progeny means on parent values evaluated in the same or similar environments may lead to biased heritabillty estimates. This bias arises from genotype ✕ environment interaction and error covarlances between parents and progenies. This paper deals with the theoretical effects of these covariances on parent-offspring regression heritability estimates and emphasizes some considerations necessary in estimating heritability. Covariance analysis is recommended as a method of obtaining more meaningful narrow sense heritabillty estimates than simple parent-offspring regression for a set of parents and their offspring evaluated in a set of environments.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © .