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Demurin Y.,All Russia Research Institute of Oil Crops VNIIMK | Borisenko O.,All Russia Research Institute of Oil Crops VNIIMK
Helia | Year: 2011

Development of genetic collection is considered to be an essential part of genetic resources of cultivated sunflower. The VNIIMK genetic collection of identified alleles determining oleic acid content in the seed oil consists of about 50 constant inbred lines. Fourteen of them are in a core collection. The general range of this trait varies from 20 to 92%. These inbred lines correspond to four main phenotypic classes: low, conventional, mid and high oleic. The normal line RIL100 was shown to contain a high oleic mutation Ol in hypostatic condition. The mid oleic LG27 averagely 67% does not contain the high oleic mutation in genetic background. The high oleic LG 26 with relatively low content of oleic acid, about 86%, possesses resistance to suppressor's actions. Source


Demurin Y.,All Russia Research Institute of Oil Crops VNIIMK | Borisenko O.,All Russia Research Institute of Oil Crops VNIIMK | Bochkarev N.,All Russia Research Institute of Oil Crops VNIIMK
Helia | Year: 2010

Pleiotropic effect of a high pamitic (p) and high oleic (Ol) mutations in sunflower seed oil was investigated in VK580 near-Isogenic lines in field conditions. It was found that the p mutation decreased plant height by 41 cm (32%), number of leaves by 4 (14%) and the period of emergence-flowering by 2 days (4%). The Ol mutation significantly increased plant height by 4 cm (3%). In addition, relationship between inheritance of high palmitic mutation and plant height in the case of selfing of F 2 plants was observed in the cross VK850 (p) × VK508 (Ol). The correlation coefficient was r=-0.54 with linear equation y=154.49-1.95x. The average plant height of the high palmitic homozygotes in the segregated F 2 population was lower and estimated at 109 cm as compared with 138 cm in the other plants (LSD 05=3 cm). Thus, a negative effect of the high palmitic mutation on plant height was proved beyond doubt. A question remains whether this phenomenon relates to a gene linkage or true pleiotropy. Source

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