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Identification of chromosomes controlling yield stability in wheat using component and path analysis

Content Provider	Springer Nature Link
Author	Farshadfar, Ezatollah Hasheminasab, Hojjat
Copyright Year	2014
Abstract	In order to identify the chromosomes controlling yield and yield stability, 21 wheat substitution lines along with their parents: genotypes Chinese Spring (recipient) and Chayan (donor) and genotype Sardary, as control, were used in a randomized complete block design with three replications under two different conditions (rainfed and irrigated) for two consecutive cropping seasons (2007 – 2009) at the Agricultural College of Razi University, Kermanshah, Iran. The results of descriptive diagram and combined analysis of variance showed highly significant differences for genotypes (G), environments (E) and GE interaction, indicating variability between G, E and their effects in the GE interaction and possible detection of the chromosomes controlling yield and yield stability in wheat. Chromosome substitution lines 3B, 4B, 1D and 2D showed higher yield and yield components in different environments which indicated these chromosomes might carry quantitative trait locus (QTLs) associated with controlling adaptation. Component analysis illustrated that chromosomes 1A, 5A, 7A, 5B and 7D had higher components C3 (thousand-seed weight, TSW) and higher MCi (multiplied coefficient of variation) can be identified as the key responsible chromosomes for yield instability. Chromosomes 1A, 3B, 6B, 1D and 2D had the highest and chromosomes 2A, 3A and 5D had lowest path coefficient V$_{3}$ (TSW). Therefore, higher grain yield and yield stability of chromosomes 1A, 5A, 7A, 3B, 5B, 6B, 1D, 2D and 7D are because of higher genotypic component coefficients TSW. In this study, chromosomes with negative effects on yield and yield stability were mainly located on genome A and chromosomes with positive effects were found on genome B.
Starting Page	167
Ending Page	174
Page Count	8
File Format	PDF
ISSN	19759479
Journal	Journal of Crop Science and Biotechnology
Volume Number	17
Issue Number	3
e-ISSN	20058276
Language	English
Publisher	The Korean Society of Crop Science
Publisher Date	2014-09-24
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	chromosome substitution lines component analysis path analysis wheat yield stability Plant Sciences Plant Genetics & Genomics Plant Pathology Plant Physiology Biotechnology
Content Type	Text
Resource Type	Article
Subject	Plant Science Biotechnology Agronomy and Crop Science

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