About Us | Help Videos | Contact Us | Subscriptions
 

Abstract

 

This article in AJ

  1. Vol. 100 No. 3, p. 760-764
     
    Received: Oct 11, 2006
    Published: May, 2008


    * Corresponding author(s): dehghanr@modares.ac.ir
 View
 Download
 Alerts
 Permissions
 Share

doi:10.2134/agronj2006.0282

Graphic Analysis of Genotype by Environment Interaction for Lentil Yield in Iran

  1. Naser Sabaghniaa,
  2. Hamid Dehghani *a and
  3. Sayyed Hossain Sabaghpourb
  1. a Dep. of Plant Breeding, Tarbiat Modares Univ. P.O. Box 14115-336 Tehran, Iran
    b Dryland Agricultural Research Institute, Kermanshah, Iran

Abstract

Selection of lentil (Lens culinaris Medik) cultivars with wide adaptability across diverse farming environments is important, before recommending them to achieve a high rate of cultivar adoption. Seed yield of 11 lentil genotypes, tested in a randomized complete-block design with four replicates across 20 environments in Iran, was analyzed using site regression (SREG) stability model. The biplot technique facilitates a visual evaluation of superior genotypes, which is useful for cultivar recommendation and megaenvironment identification. A substantial amount of genotype × environment (GE) interaction for lentil grain yield was detected. Location (L) and genotype × location (GL) variabilities were the predominant components of total yield variation. The first two principal components (PC1 and PC2) of the SREG model accounted for 76% of the total GE interaction. There were four winning genotypes and three megaenvironments according to the SREG model. The best genotype in one location was not always so in other test locations. According to the ideal-genotype biplot, genotype G5 was better than all other genotypes; G5 exhibited both high mean yield and high stability of performance across environments. According to G + GE sources of variations, the genotypes (G4, G7, G9, and G10) were the most suitable varieties for the lentil-producing regions in Iran.

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

Copyright © 2008. American Society of AgronomyCopyright © 2008 by the American Society of Agronomy