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Study of grain yield stability of bread wheat genotypes in cold agro-climatic zone of Iran
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Tohid Najafi Mirak   |
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Abstract: (4071 Views) |
| To select wheat cultivars/lines with high grain yield and stability as well as to determine suitable sowing date for cold agro-climatic zone in Iran, 15 wheat cultivars/ lines were studied in split plot arrangement using randomized complete block design, with three replications in three sowing dates (Oct. 12, Nov. 01 and Nov. 21), at 10 field stations, for three growing seasons (2004-2007). Data on grain yield from different field stations in three growing seasons were analyzed to determine the best sowing date for each location. Results of combined analysis of variance showed that the first sowing date (Oct. 12) was suitable for all of the test locations. Therefore, the data of first sowing date were analyzed for 8 location and three grwong seasons. Since interaction of genotype × year × location was significant, stability analysis was performed using different methods. Results of these methods were almost similar. According to the results, Gascogne and C-81-14 with grain yield averages of 7841 and 8250 kg.ha-1, respectively, were the most stable genotypes. However, C-82-12 and Sissons, were superior genotypes with average yield of 8819 and 8295 kg.ha-1, respectively, but with lower grain yield stability. M-81-13, M-79-7 and Pishtaz had the least grain yield stability in cold agroclimatic zone. |
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| Keywords: Genotype × environment interaction, Cold agro-climatic zone, Bread wheat, Grain yield stability and Adaptation. |
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Full-Text [PDF 165 kb]
(1332 Downloads)
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Type of Study: Scientific & Research |
Subject:
Special
Received: 2015/02/17 | Accepted: 2015/02/17 | Published: 2015/02/17
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