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Evaluation of some Important Agronomic and Physiological Traits in Barley Cultivars in Rain Fed Conditions
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Abstract: (3311 Views) |
Identifying the traits that can be considered in breeding programs for improving barley yield under rain fed conditions will increase the chance of success in breeding programs and will allow for planning to select effective traits for improving yield. In this research, in order to investigate the relationship between the yield and the important agronomic traits of barley under rain fed and laboratory conditions, in Iranian and European cultivars, 20 cultivars of Iranian barely and 24 cultivars of European barely were cultivated in a randomized complete blocks design with three replications at the experimental farm of the Agricultural Faculty of Razi University during 2014-15. Correlation analysis revealed that grain yield had positive and significant correlation with biological yield, number of fertile tiller per square meter, plant height, straw yield, harvest index and hector liter weight. The malt efficiency trait was positively and significantly correlated with grain width, rake length, one-thousand grain weight, number of seeds per spike, hectoliter weight, grain filling period, grain filling rate and day to physiological maturity traits. The path analysis showed that the most direct effect on yield was belonged to the number of fertile tillers per square meter. Grain filling speed had the most direct and positive effects on one-thousand seed weight and straw yield, had the most direct positive effect on biological yield. Ten factors were identified by factor analysis, the most important of which were the phonological factors affecting the target, the characteristics of the spike and flag leaf, and in total 78.33 percent of the total variation of the data was justified. According to the obtained results, in order to produce barley genotypes with high grain yield in rain fed conditions, it is proposed that plants with more fertile tiller numbers per unit area, higher biological yield, shorter phonological time and taller be selected. |
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| Keywords: Path analysis, Factors analysis, Correlation analysis, Malting efficiency and Grain yield. |
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Full-Text [PDF 368 kb]
(4338 Downloads)
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Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2018/03/3 | Accepted: 2018/03/3 | Published: 2018/03/3
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