Abstract
Stylar proteins of Japanese pear were investigated with respect to self-incompatibility by using the method of immunodiffusion.
At least 5 proteins extracted from mature styles of the pear acted as antigens against the rabbit and 2 of them showed unique distribution patterns among the flower tissues; one was a style-specific antigen and the other was present in mature styles but not in immature ones. The latter antigen increased in quantity as self-incompatibility of the style became stronger.
