α-amylase in germinating, decorticated barley—III

摘要: Abstract Chlorocholine chloride, CCC, has been shown to inhibit growth and the formation of α-amylase in germinating barley. The addition gibberellic acid, GA 3 , did not fully reverse inhibition caused by but synthesis increased level found grains cultured with only. Thus CCC had a toxic effect on embryo suppressing endogenous gibberellins. In presence large quantities barley was slow relative rate enzyme only, decline also retarded. Choline gave results generally similar those produced when applied High levels potassium sulphate slowed degradation grain germinated or without . Some twenty-three compounds were added absence interpreted terms varying damaging effects towards production gibberellins, growth, system synthesizing aleurone layer. suggest that choline, hordenine other naturally occurring basic substances may regulate gibberellins