Published in Scientific Papers. Series A. Agronomy, Vol. LXVI, Issue 2
Written by Adelina GARAPOVA, Hristofor KIRCHEV
In the experimental field of the Department of Crop Science at the Agricultural University - Plovdiv for three years, a field experiment has been conducted. The experiment has been carried out by the method of split-plots in four replications after the predecessor triticale. Five tribenuron-methyl resistant sunflower hybrids (main plots) have been studied: P64LE25 (standard); LG 59.580 SX; Subaro HTS; ЕS Arcadia SU and Magma SU. The effect of two soil nutrition regimes - lower and higher has been investigated (split-plots). The oil content of the seeds has been studied. The fatty acid composition of the oil has been investigated. It has been found that the hybrids can be arranged in the following descending order regarding the average oil content of the seeds: P64LE25> Subaru> LG 59.580> Magma> Arcadia. The hybrids contain an average of 15% saturated and 85% unsaturated fatty acids. The lowest content of saturated and the highest content of unsaturated fatty acids have been found in hybrid Magma, and the highest content of saturated and lowest content of unsaturated - in hybrid Subaru.
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