Genetika 2017 Volume 49, Issue 2, Pages: 495-510
https://doi.org/10.2298/GENSR1702495S
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Genetic diversity of characteristics in barley cultivars
Saroei Elahe (Razi University, Department of Agronomy and Plant Breeding, Kermanshah, Iran)
Cheghamirza Kianoosh (Razi University, Department of Agronomy and Plant Breeding, Kermanshah, Iran)
Zarei Leila (Razi University, Department of Agronomy and Plant Breeding, Kermanshah, Iran)
Knowledge of the genetic diversity is important to design appropriate
selection criteria in the breeding programs. In this study, the genetic
diversity of 42 Iranian and European barley cultivars was investigated with
morpho-agronomic traits including phenological, physiological, morphological
traits, grain yield and associated traits. Analysis of variance showed high
variability among cultivars. The European cultivars Panaka, Aiace and
Pariglia had the highest grain yield. The results of group comparisons
indicated that the European cultivars produced higher grain yield (500.57
g/m2) than the Iranian cultivars (445.50 g/m2), but larger genetic diversity
based on morpho-agronomic traits was observed among Iranian cultivars than
European cultivars. Correlation analysis revealed the high significant
correlations between grain yield with biological yield (0.92), straw yield
(0.77), and number of spike per square meter (0.67). Based on the factor
analysis, the six factors that justified 81.63 percent of the variations
were identified. The first factor having the largest eigenvalue was
identified as effective factor on the vegetative and reproductive growth. In
path analysis, biological yield had the greatest effect on grain yield
(0.906). Cluster analysis classified the cultivars in six groups and showed
that genetic variation based on the all studied traits among the barley
cultivars was not related to geographical location.
Keywords: Barley, genotype diversity, group comparisons, traits similarity