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Selection of barley (Hordeum vulgare L.) genotypes for grain yield, yield stability and tolerance to terminal season drought stress under temperate climatic conditions of Iran
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Ali Barati   , Elias Arazmjoo , Seyyed Ali Tabatabaei , Javad Hasanpour |
| Field and Horticultural Crops Science Research Department, South Khorasan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Birjand, Iran & Field and Horticultural Crops Science Research Department, South Khorasan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Birjand, Iran |
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Abstract: (68 Views) |
Introduction: Drought is one of the abiotic stresses in many parts of the world, and it is one of the major limiting factors for crop production under changing climate. Therefore, one of the important goals in crop breeding programs is development of drought-tolerant cultivars adapted to target environments. Evaluation of genetic variation for terminal drought stress tolerance in barley and identification of genotypes with high grain yiled and yiled stability and drought tolerant are prerequisites for developing new adapted barley cultivars (Barati, et al., 2023).
Materials and Methods: In this experiment, 18 genotypes from temperate climate barley breeding program were evaluated using randomized complete block design with three replications, under two conditions of non-stress and terminal drought stress conditions, at three research field stations; Varamin, Birjand, and Yazd (total of 12 environments) in two cropping cycles (2021-22 and 2022-23). Grain yield stability using parametric and nonparametric statistics and their correlation coefficients with grain yield, as well as stress tolerance indices and biplot based on two principal components were evaluated.
Materials and Methods: Results of biplot analysis showed that genotypes No. 1, 2, 3, 4, 5 and 7 had higher grain yield under trminal drought stress conditions. Overall, genotypes No. 3, 2, and 7 with the lowest average rank of stability statistics and standard deviation of rank and higher grain yield than the total mean, had the highest grain yield stability, respectively. Considering the average rank of each genotype for all drought stress indices, genotypes No. 7, 2, and 1 were identified as the most tolerant genotypes, respectively. However, genotypes No. 6, 11, and 17 were identified as the most sensitive genotypes to drought stress, respectively.
Conclusion: In conclusion, genotype No. 7 with pedigree of Yousef/3/Legia//Rhn/Lignee527 with mean grain yield of 6500 kg.ha-1 and genotype No. 2 with pedigree of Assala'S'//Avt/Aths/3/Arinar/Aths//D529/4/Yousef with mean grain yield of 6252 kg.ha-1 identifioed as high-yielding with yield stability genotypes for being released and grown in terminal drought stress prone areas in temperat climatic conditions of Iran. .
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| Keywords: Barley, Biplot analysis, Drought tolerance indices, Grain yield, Parametric and non-parametric statistics |
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Full-Text [PDF 1059 kb]
(28 Downloads)
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Type of Study: Scientific & Research |
Subject:
Special
Received: 2025/02/15 | Accepted: 2025/04/12 | Published: 2025/07/1
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