Additional criteria for estimation of sunflower inbred lines in foundation seeds growing

We conducted researches in 2018-2019 in the V.S. Pustovoit All-Russian Research Institute of Oil Crops, Krasnodar. The purpose of the research was to study additional criteria for estimation of sunflower inbred lines VK-678; VK-101; VK-905; VА-760 and ED-765. We determined the inbred lines VK-905; VK-678 and ED-765 had increased selectivity in pollination with their own (86.9; 80.5 and 80.0%, respectively) and could be less contaminated genetically when multiplied in breeder and foundation seeds growing nurseries. We stated dependence between bee attractiveness and a length of corona of tubular floret. A line VK-905 having corona length of 6.4 mm almost is not visited with bees (bee visiting - 0.02 specimens per a plant per a minute). Bee visiting of the other plants is quite high and amounts from 0.20 for the line ED-765 to 0.25 for the lines VK-678 and VK-101 with a length of corona from 4.7 to 5.7 mm. Self-fertility of the lines is 11.8 and 195% for the lines VK-678 and VA-760, and 52...