Evaluation of Some Agro-Morphological Traits Diversity in Iranian Bread Wheat Genotypes
2014
Sabaghnia, Naser | Janmohammadi, Mohsen | Segherloo, Asghar Ebadi
Variation of traits is a primary need of any plant breeding effort that involves the natural evolution and causes sustainable crop production under different environments. Fifty six bread wheat genotypes grown during the growing season of 2012/2013 were evaluated for variability characteristics for eighteen traits i.e., stem diameter, plant height, leaf number, leaf length, leaf width, tiller number, internode length, peduncle length, spike length, floret number, spikelet number, grain number, awn length, grain diameter, grain length, number of days to flowering, thousand seed weight and grain yield. Significant differences were observed for all the traits studied, indicating a considerable amount of variation among wheat genotypes for each trait. The estimates of the coefficient of variation (CV) were high for grain yield and number of tillers per plant. Spike length varied from 8.95 in G28 to 4.74 in G40, while genotype G20 had the maximum floret number (19). According to thousand seed weight, genotype G55 had the maximum thousand seed weight (45.57 g) and genotype G4 had the maximum grain yield performance (6936.3 kg ha-1). The information on diversity among the agro-morphological traits of the studied wheat genotypes will be helpful to plant breeders in constructing their breeding materials and implementing selection strategies.
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