抄録
The growth-promoting activity for plants of naphthoic acid derivatives (Table 1 and Fig. 1) was tested by the previously reported method. (1)
The results obtained are illusrtated in Fig. 2. Two strongly active and two slightly active subst-ances were found among the sixteen derivatives of naphthoic acid tested.
These are 1, 4-dihydro-, 1, 2, 3, 4-tetrahydro-, 3, 4-dihydro- and 2, 3-dibromo-1, 4-dihydro-naph-thoic acid-1 and the relative activities of thesé substances are shown in Table 2.
It had been found that these epinasty-active substances had also the activity for induction of adventitious roots.
It is interesting that these strongly active substances have been found among the compounds which have a carboxyl group attached directly to the carbon ring.
