Influence of seed processing on sunflower seed qualities

In sunflower seed production it is important to obtain a high quality end product. This depends not only on field conditions and cultural practices applied but also on seed processing. During processing, seed grades are obtained which differ in size and specific weight. This procedure improves seed quality in comparison with unprocessed seed. The objective of this study was to assess the effect of seed processing and grading on seed quality parameters in different sunflower genotypes. Effects of four seed grades (1. large and heavy, 2. large but light, 3. small and heavy, 4. small and light) on 1000-seed weight, husk, oil and protein contents, energy of germination, and germination rate Were examined in three sunflower genotypes developed at Institute of Field and Vegetable Crops in Novi Sad. The seeds were first separated through sieves into large (3.5-5.0 mm) and small (2.6-3.5 mm) grades, which were then divided into heavy and light grades on a gravity table