Document Type: Original Article
Authors
1 Graduated of Master of Science in Plant Breeding, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
2 Assistant Professor, Department of Plant Breeding and Biotechnology, Faculty of agriculture, University of Tabriz, Tabriz, Iran
Abstract
Objective: Wheat is the most important crop in Iran. Self sufficiency in wheat production is one of the economic and food safety policies in the country. In spite of the efforts which have been made in this area, the mean of wheat yield in Iran is less than its world average. Methods: In order to identifying of the high yielding wheat lines with optimal characteristics and to determine the traits which could be used as the selection index for increasing of grain yield, 40 recombinant inbred lines derived from a cross between Norstar and Zagros cultivars were evaluated in a randomized complete block design with three replications. Results: Significant differences were observed among the lines for all of studied traits, except the spike weight, flag leaf area and the straw yield. Higher genetic diversity was observed among the inbred lines with respect to the kernel per spike, the number of spikes, the biomass and the straw yield. The Peduncle weight, second internode weight, number of kernels per spike per spike, number of the spikes and 1000 kernel weight traits showed a high degree of heritability. The highest genetic gain was estimated for the peduncle weight, the second internode weight and number of kernel per spike. Correlation, stepwise regression and path analyses revealed the number of kernels per spike and the number of spikes in plot had highest direct effects on grain yield. The analyses were carried out using WARD algorithm and standardized data. Cluster analysis based on all traits assigned the lines into groups.
Keywords
Main Subjects
Ahmed, Su., Zakir, n and Mujahid, MY. (2009). Estimation of genetic parameters and character association in wheat. Journal of Agricultural and Biological Science. 1: 15-18.
Carter, A. Hansen, J., Kohler, T., Chen, X and Zemetra, R. (2005). Development of a recombinant inbred line (RIL) population in soft whit winter what. Crop Science Annual Meeting. Nov, 7-10, Salt Lake City, UT, U.S.A. 213-221.
Drezner, G. K., Dvojkovic, D., Horvat, D., Novoselovic M and Lalic A. (2007). Environmental impacts on wheat agronomics quality traits. Cereal restaurant. 35:357-360.
Fasoulas, V. (2008). Two novel whole-plant field phenotyping equations maximize selection efficiency. Modern variety breeding for present and future needs. Valencia, Spain. 361-365
Gupta, P.K., Kulwal P.L and Rustgi, S.B. (2005). Wheat cytogenetics in genomic era and its relevance to breeding. Cytoget. Genome Res, 109: 250-258.
Kotal, B.D., Das, A and Choudhury, B.K. (2010). Genetic variability and association of characters in wheat (triticumaestivum). Asian Journal of Crop Science. 2: 155- 160.
Mangova, M., Raohvska, G (2004). Technological characteristics of newly developed mutant common winter wheat lines. Plant Soil Environment. 50(2):84-87.
Maniee, M., Kahrizi, D and Mohammadi, R. (2009). Genetic variability of some morpho- physiological in durum wheat (triticumturgidumVar. Durum). Journal of Application Science. 9: 1383-1387.
Mohammadi, S.A and B.M. Prasanna. 2003. Analysis of genetic diversity in crop plants- Salient statistical tools and considerations. Crop Science., 43: 1234-1248.
Mohsin, T., Khan, N and Nasirnaqvi, F. (2009). Heritability, phenotypic correlation and path coefficient studies for some agronomic characters in synthetic elite lines of wheat. Journal of Food. Agriculture and Environment. 7: 278-282.
