Abstract
In connection with studies on abortive seed formation in Azuki-beans, several physiological studies were made on pollen germination. The artificial medium contains 1% agar, 30% sucrosc (Table 1) and pH 5.4∼5.8 (Fig. 1) was almost suitable for pollen germination. The pollen germinability reached to the peak towards anther-dehiscence and then decreased gradually in different stages of anthesis. The optimum temperature of pollen germination was near at 25°C, and the germinability decreased especially on Fohn weather. The preservation of pollen grains was favourable in 7°C and 20% humidity.
