Document Type : Research Paper
Authors
1
Crop and Horticultural Science Research Department, Fars Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Darab, Iran.
2
Seed and Plant Improvement Department, Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran.
10.22059/ijfcs.2025.382035.655102
Abstract
The research aimed to identify high-yielding bread wheat lines in southern Fars Province through two independent experiments conducted in the 2021-2022 and 2022-2023 agricultural years at the Darab Agricultural Research Station. In the first experiment, 319 pure lines and four checks were evaluated, resulting in the selection of 106 superior lines. In the second year, these lines were tested using an alpha lattice design in two replications. Variance analysis of the checks indicated that there were no significant differences in most traits between the blocks. Results showed that the yield of the lines in the first year varied from 1.90 to 8.88 tons per hectare, with a general mean of 5.22 tons per hectare. The selection of the best lines resulted in a reduction of yield differences between the weakest and the best lines. In the second year, variance analysis indicated that the lines had significant differences in most traits. The average yield of 106 selected lines in the second year reached approximately 11.7 tons per hectare, which shows a decrease of about one ton compared to the performance of the same lines in the first year. Climatic factors have significantly impacted these changes, resulting in both important traits of grain yield and thousand-grain weight being higher in the second year compared to the first year. The results of the FAI-BLUP index identified lines 19, 67, 110, 93, 27, 16, 39, 4, 21, 63, 107, 8, 65, 9, 64, and 68 as the top lines for assessing adaptability and stability.
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