A character of variability of sunflower varieties in production from foundation to certified seeds

The researches were conducted at FGBNU VNIIMK (Krasnodar). The purpose of the research was to study the quality of sunflower seeds of different reproduction of varieties Buzuluk, R-453, SUR, SPK, Lakomka and Oreshek. There were used the breeders seeds from reproductive plots, foundation seeds, registered and certified seeds produced in the central zone of Krasnodar region in 2012 and 2013. The trials were conducted by method of systemic plots allocation, in three repetitions. A plot was of four rows, the total area was 24.5 sq m, the accounting area - 12.2 sq m. The methods of phonological observations, accounts and seed analyses were common for breeding and seed growing of sunflower (Pustovoit V.S., 1967). Oil content of seeds was determined by a method of gas-liquid chromatography on NMR-analyzer AMV-1006M by the State Standard R 8.620-2006, 1000 seeds weight - by the State Standard 12042-80. The results of the researches were treated by dispersion analysis described by Dospekhov B.A. (1985). During the reproduction there was noted the different variability of sunflower varieties of oil and confectionary types in production from foundation to certified seeds. The indexes of such traits as flowering, plant height, oil content of seeds, 1000 seeds weight were stable in populations of oil varieties Buzuluk, R-453, SUR during a reproduction stage from foundation to certified seeds. And confectionary varieties SPK, Lakomka, Oreshek differed with increasing of variability, as a rule, at reproduction stage from registered to certified seeds. The varietal differences were noted on reaction for reproduction stages. Thus, the biggest changes in flowering were recorded for the variety Oreshek, in plant height - for the varieties SPK and Oreshek, in oil content of seeds - for the variety Lakomka, in 1000 seeds weight - for all three varieties SPK, Lakomka and Oreshek.