To improve the accuracy of parameters used in discrete element simulation tests process clearing fresh sunflowers, this study took extracts sunflower as research object and a combination physical experiments to calibrate parameters. First, composition edible extract is determined, then, test method determine characteristics material. Based on results basis, Plackett–Burman screen significance p...

The creation of homozygous plants is essential for both genetic studies and the production hybrid seeds, particularly in that were pollinated by an alien species. Dihaploid (DH) technology important application obtaining lines used to plant speed breeding programs. generation haploid embryos pollen irradiation pollination female flowers with irradiated has been successfully applied. influence o...