抄録
The present experiments were conducted with the object of determining the cause for varietal difference in speed of seed germination. The experiments performed in connection with this study were grouped into two parts, namely (a) the relation between germination and glycolysis in rice seed and (b) the type of germination. The results obtained are summarized as follows. (1) the differential speed of germination of each variety has the same tendency as the strength of glycolysis in endosperm and amylase activity in embryo and endosperm. (2) the type of germination seems to be influenced by the presence of endosperm, that is, at the high temperature (30°C) the radicle appears previous to the plumule while at the low temperature (15°C) this sprouts more quickly than that on filter paper. But on the germination of the embryo cut off from the endosperm, regardless the temperature, the plumule appears previous to the radicle. The term "germination" is used in this paper to mean the phenomenon in which the plumule or the radicle appears when the rice seed is placed on filter paper or in water.
