EVALUATION OF PHENOTYPIC STABILITY IN BREAD WHEAT ACCESSIONS USING PARAMETRIC AND NON-PARAMETRIC METHODS

Authors: A. Yaghotipoor, E. Farshadfar, M. Saeidi
Journal: Journal of Animal and Plant Sciences (JAPS)
ISSN: 1018-7081 (Print), 2309-8694 (Online)
Volume: 27  Issue: 4  Pages: 1269-1275
Year: 2017
DOI: NA
URL: https://doi.org/NA
Publisher: Pakistan Agricultural Scientists Forum

Abstract:
<p>In order to compare parametric and nonparametric stability measures, and to identify high-yield and stable bread wheat genotypes, 20 accessions were grown in a randomized complete block design with 3 replications under 6 irrigated and dryland conditions. Combined analysis of variance (ANOVA) and Bredenkamp test indicated the presence of significant genotype &times;environment interactions. Parametric and non- parametric stability statistics introduced genotypes: G13, G15 and G18 as the most stable. The statistics<img src="https://archives.thejaps.org.pk/Volume/2017/27-04/abstract/30_clip_image002.gif" width="18" height="26">,&nbsp;<em>bi</em>,&nbsp;<img src="https://archives.thejaps.org.pk/Volume/2017/27-04/abstract/30_clip_image004.gif" width="26" height="28">and&nbsp;<img src="https://archives.thejaps.org.pk/Volume/2017/27-04/abstract/30_clip_image006.gif" width="28" height="28"> were desirable for the simultaneous selection of yield and stability. Spearman's rank correlation indicated that most non-parametric measures were significantly (P&lt;0.01) inter-correlated with parametric measures and therefore can be used as alternatives.</p>

Keywords: Bread wheat, GE interaction, parametric and non-parametric measures, stability