Abstract
The results of using sunflower gene pool accessions (variety-population Kruiz, lines - sterility fixers Kh 1012 B, Mkh 215 B and Kh 52 B) in sunflower breeding for high content of oleic acid in oil are presented. During the period of 2007-2018, 52 self-pollinated lines were created, including 39 lines - sterility fixers and 13 lines - pollen fertility restorers, with high, medium and low content of oleic acid in oil. In 2019-2021, various expression levels of valuable economic and morphological features were determined in 15 lines - sterility fixers. The oleic acid content in oil from seeds of the lines was found to exceed 85%; the "seedlings-flowering" period lasted 53-59 days; the lines were highly resistant to rust, downy mildew and broomrape (parasitic plant). The lines are valuable sources for creating oleic sunflower hybrids.
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