Abstract:
【Objective】 To explore the high nutritional quality resources through the comprehensive evaluation of the seed phenotypes and nutritional composition of edible sunflower germplasm resources. This study reveals the complex interactions between sunflower seed traits and nutrients, and provides an effective reference for breeding sunflower functional improvement and developing functional leisure food.
【Methods】 The seeds harvested from 19 edible sunflower varieties were taken as the research objects, and 4 seed kernel traits and 10 nutritional composition indexes were identified and analyzed.
【Results】 The results showed that all the indexes exhibited significant differences among varieties (
P < 0.01), and the grain size of the participating varieties reached the standard of wide seed kernel, with LJ371 and CS211 having high yield potential. The unsaturated fatty acid content of seed kernel of all commodities exceeded 85%, in addition, high protein variety KEYANG10, high oleic acid variety LONGSHIKUI11, high chlorogenic acid variety JK202 were screened out. Kernel width was negatively correlated with kernel percentage and positively correlated with 100-kernel weight; oleic acid content was negatively correlated with linoleic and palmitic acids; chlorogenic acid was positively correlated with vitamin E and soluble protein; and the correlation was positively correlated with vitamin E, vitamin C, and soluble protein. Chlorogenic acid was positively correlated with vitamin E and soluble protein.14 indexes into five principal components, and PC
1 (25.7%) and PC
2 (17.0%), which had a larger contribution rate, were used as the reference indexes to screen out the three varieties with better comprehensive evaluation, which were JSK21, JK202 and LJ367.
【Conclusion】 Systematic cluster analysis classified the participating varieties into three categories, including high soluble protein, chlorogenic acid, high oleic acid, and high oil.