Document Type : Research Paper
Authors
1
Sugar Beet Research Dept, Agricultural and Natural Resources Research Center of Hamedan, Agricultural Research, Education and Extension Organization (AREEO), Hamedan, Iran.
2
Sugar Beet Seed Institute (SBSI), Agricultural Research, Education and Extension Organization (AREEO), Karaj, Iran
Abstract
To evaluate the phenotypic and genetic relationships of traits affecting white sugar yield, 13 foreign sugar beet genotypes were investigated. Genotypes were assessed using a randomized complete block design with four replications in Karaj and Hamadan stations in the 2022 and 2023 crop years. The results showed that genotypes, F-21374, F-21375, and F-21092, produced the maximum white sugar yield. In two locations, the phenotypic and genetic correlation of white sugar yield with sugar content, white sugar content, alpha amine, and sugar extraction coefficient was positive and significant. At the same time, it was negative and significant with root sodium, alkalinity content, and molasses sugar percentage. In the Hamadan, root yield, sodium content, and sugar extraction coefficient (R2 = 89.99) were the most influential traits of white sugar yield. In the Karaj, sodium content, root yield, and alpha amine content (R2 = 96.8) were the most influential traits. In the Hamedan, root yield, sodium content, and sugar extraction coefficient had a positive and significant phenotypic and genetic effect on white sugar yield. Root yield and alpha amine showed a direct positive phenotypic and genetic impact in the Karaj. In contrast, sodium content showed a direct negative phenotypic and genetic impact on white sugar yield. Based on the biplot analysis results, the first two factors explained 78.5% and 88.80% of the total data variance in Hamedan and Karaj, respectively. Two genotypes, F-21375 and F-21092, were identified as suitable genotypes, and root performance and sodium content were recognised as the most effective traits.
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