Evaluation and preliminary identification of superior lines of bread wheat in the north of khuzestan province
2023
Keshavarz Nia, Reza | Esmaeilzadeh Moghaddam, Mohsen | Tabib Ghaffary, Seyed Mahmoud
For this purpose and identify the best bread wheat lines in terms of yeild and stability, an experiment was carried out during the two crop years of 2020-2021 and 2021-2022 in the research farm of Safi Abad Agricultural and Natural Resources Research Center, Dezful. 407 new wheat lines were evaluated along with 4 regional control varieties, in the first year & 88 best lines of the first year were evaluated along with Mehrgan and Chamran 2 varieties, in the second year. One of the main reasons for this decrease in yield can be attributed to the increase in the temperature of March in the second year (20 degrees Celsius) compared to the first year (16 degrees Celsius), which caused the average grain filling period from 49.5 days in the first year to reach 46.7 days in the second year. Finally, according to the total measured traits of each line during two crop years, lines No. 384, 365, 356, 383, 355, 389 and 424 were selected as the best lines. Pedigree study of the top lines, it was found that in the pedigree of the top 5 lines, there is a common parent named BORL14, which probably made these lines superior to the other tested lines. According to these results, it is possible to propose and implement the use of this line to improve the wheat breeding program in the hot and dry areas of the south.
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