1953 年 22 巻 1-2 号 p. 117-118
1. The author has studied the propagation value of the secondary growth tuber, by using "Benimaru" for three years (1948, 1949, 1951). 2. Concerning sprouting, stem length, number of stems, etc., there was no remarkable difference between the normal tuber and the secondary growth tuber as a propagating agent. 3. Concerning the yield in 1949 and 1951, there were the same results as the above mentioned case. 4. It might be said from the results of the experiment in 1948 that the propagation value was influenced by the storing method. 5. Therefore, the propagation value of the secondary growth tuber was equal to that of the normal tuber, if the storing method was suitable.