Author's Organization：Chogo Farm of the Sakata Seed Co., Chogo, Fujisawa Laboratory of Plant Breeding, Faculty of Agriculture, Tohoku University, Sendai
Cabbage stocks, when they were placed in high temperature conditions, set much seeds in the case of self-pollination. High temperature condition accerelated the growth of pistils and of papilla cells, and such accerelated growth of papilla brought about incompletion of the phenotypic expression of self-incompatibility.
