Comprehensive Evaluation of Sunflower (Helianthus Annuus L.) Collection Accessions Based on Vegetation Period, Individual Plant Productivity, And Seed Quality Indicators

Abstract

In this study, 15 accessions from the global sunflower (Helianthus annuus L.) collection and one reference cultivar were evaluated for vegetation period, individual plant productivity, and the oil and protein content of seeds. The results showed that the vegetation period varied from 94 to 138 days, with accession K-8 identified as the earliest maturing genotype (94 days). Individual plant productivity ranged from 35 to 49 g, with the highest value recorded for accession K-91. The oil content of seeds ranged from 35.3 to 51.4%, with accessions K-83 and K-88 distinguished by their high oil accumulation capacity. Protein content varied between 16.9 and 22.1%, with relatively higher values observed in confectionery-type accessions. The obtained results revealed significant genetic variation among sunflower collection materials in terms of agrobiological and biochemical traits and demonstrated their potential as promising initial material for breeding programs.