• • • Seed quality of spring turnip parental lines (Brassica rapa L.) for F1 hybrid production via sporophytic incompatibility
This paper reports on seed biochemical parameters of spring turnip lines to be used to produce F1 hybrids. Improvement in oil biochemical composition is of great importance in turnip breeding. Therefore, the main idea is to eliminate eicosenoic and erucic acids, reduce concentration of linolenic acid, keep oleic and linoleic acids at the level of over 80% and glucosinolates — up to 2%. Self-incompatible lines are believed to be advantageous to ensure heterosis. Experiment, taken place in 2017–2018 selected 20 self-incompatible genotypes of spring turnip. Those lines were tested to determine promising plant material to produce F1 hybrids, using sporophytic incompatibility. L4 and L8 lines had the highest seed productivity. Weather conditions affected seed yield of S-lines. L4 and L8 lines showed the highest oil content in seeds. Self-incompatible genotypes exceeded standard and parental material insignificantly in oleic acid content. L6, L8 and L10 lines accumulated the highest concentration of oleic acid while L5 line — the lowest one. All genotypes had low content of erucic acid. Protein yield varied insignificantly. L4 and L8 lines had the highest productivity and oil concentration and were selected as parental material for hybridization, using sporophytic incompatibility.
Source: http://kormoproizvodstvo.ru/en/12-2018-2/, p. 33
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