With sinapis alba a better crop of seeds was obtained after geitonogamy, and in the Sugar Beet the average weight of a fruit in the case of a self-fertilised plant was 0.009 gr.
"Darwin and Modern Science"
A.C. Seward and Others
12. I. Seedling of sinapis alba showing root-hairs.
"Outlines of Lessons in Botany, Part I; From Seed to Leaf"
Jane H. Newell