Development of sunflower hybrids tolerant to tribenuron methyl
2011
Jocić, S., Institute of Field and Vegetable Crops, Novi Sad (Serbia) | Malidža, G., Institute of Field and Vegetable Crops, Novi Sad (Serbia) | Cvejić, S., Institute of Field and Vegetable Crops, Novi Sad (Serbia) | Hladni, N., Institute of Field and Vegetable Crops, Novi Sad (Serbia) | Miklič, V., Institute of Field and Vegetable Crops, Novi Sad (Serbia) | Škorić, D., Serbian Academy of Science and Arts (SASA), Novi Sad (Serbia). branch in Novi Sad
Discovery of tribenuron-methyl resistant wild Helianthus annuus L. population (ANN-KAN) created an opportunity for expansion of sunflower herbicide resistance breeding program. The aim of this study was development of sunflower hybrids resistant to tribenuron-methyl. Creation of tribenuron-methyl resistant hybrids would enable the use of a wider palette of herbicides for sunflower, more efficient chemical control of Cirsium arvense and more economically profitable post-emergence control of some annual broad-leaves weeds in sunflower Original populations SURES-1 and SURES-2 are homozygous for resistance to tribenuron-methyl. F1 generations produced from the crossings are completely resistant to tribenuron-methyl, pointing out to dominant way of inheritance of this trait. Studies on the exact number of genes controlling the resistance are in progress. Tribenuron-methyl resistance was transferred from original populations into a number of female and male inbred lines of cultivated sunflower. These inbred lines could enable creation of a number of hybrids resistant to tribenuron-methyl. Hybrids SUMO-1-PR, SUMO-2- OR and SUMO-3 are resistant to doubled application dose of tribenuronmethyl. Agronomical characteristics of these hybrids are on the level with the leading conventional sunflower hybrids.
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