Pleiotropic effect of high palmitic and high oleic mutation in seed oil on morphological traits in sunflower

Pleiotropic effect of a high palmitic (p) and high oleic (Ol) mutations in sunflower seed oil was investigated on the genetic base of VK580 near-isogenic lines in the field conditions. It was found out that p mutation decreased plant height by 41 cm, quantity of leaves by 4 pieces and the period of emergence-flowering by 2 days. Ol mutation increased significantly plant height by 4 cm. Moreover, the fact of associated inheritance of high palmitic mutation with plant height in the case of selfing of F2 plants in the cross of VK850(p)×VK508 was observed. Average plant height of the high palmitic homozygotes in the segregated F2 population was lower and estimated as 109 cm with comparing to 138 cm for other plants. Thus, negative effect of the high palmitic mutation on plant height was certainly proved.