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International Journal of Agronomy
Volume 2013 (2013), Article ID 201851, 9 pages
http://dx.doi.org/10.1155/2013/201851
Research Article

Line × Tester Mating Design Analysis for Grain Yield and Yield Related Traits in Bread Wheat (Triticum aestivum L.)

1National Institute of Agricultural Research, Setif Agricultural Research Unit, Setif 19000, Algeria
2Faculty of Life and Natural Sciences, Ecology and Plant Biology Department, University of Ferhat Abbas, Setif 1 19000, Algeria
3Faculty of Agro-Veterinary and Biological Sciences, Agronomy Department, University of Saad Dahlab, Blida 09000, Algeria

Received 6 March 2013; Revised 20 May 2013; Accepted 29 May 2013

Academic Editor: David Clay

Copyright © 2013 Zine El Abidine Fellahi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nine bread wheat (Triticum aestivum L.) genotypes were crossed in a line × tester mating design. The 20 F1's and their parents were evaluated in a randomized complete block design with three replications at the Field Crop Institute-Agricultural Experimental Station of Setif (Algeria) during the 2011/2012 cropping season. The results indicated that sufficient genetic variability was observed for all characters studied. A899 × Rmada, A899 × Wifak, and A1135 × Wifak hybrids had greater grain yield mean than the parents. A901 line and the tester Wifak were good combiners for the number of grains per spike. MD is a good combiner for 1000-kernel weight and number of fertile tillers. HD1220 is a good general combiner to reduce plant height; Rmada is a good general combiner to shorten the duration of the vegetative growth period. A901 × Wifak is a best specific combiner to reduce plant height, to increase 1000-kernel weight and number of grains per spike. AA × MD is a best specific combiner to reduce duration of the vegetative period, plant height and to increase the number of kernels per spike. A899 × Wifak showed the highest heterosis for grain yield, accompanied with positive heterosis for the number of fertile tillers and spike length, and negative heterosis for 1000-kernel weight and the number of days to heading. ,   low ratios and low to intermediate estimates of h2ns supported the involvement of both additive and nonadditive gene effects. The preponderance of non-additive type of gene actions clearly indicated that selection of superior plants should be postponed to later generation.