| abstract |
Disclosed are novel adenine derivatives represented by the formula I and salts thereof represented by the formula II:n wherein n is an integer of from 2 to 4 and X is an equivalent of hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, formic acid or acetic acid. n Agents for increasing yield of crops such as leguminous crops and gramineous crops which contain the above adenine derivatives or salts thereof as an active ingredient and a method for increasing the yield of crops using these agents are also disclosed. |