Abstract
A near isogenic line pair which differs only in the Uz and uz alleles was used for investigating the effect of uzu (uz) gene on the level of endogenous gibberellins in barley. Amounts of endogenous gibberellins in uzu plants were found to decrease in about a half to that of nami (normal) plants. Application of gibberellin A3 to uzu plants stimulated seedling growth and that of 2-chloroethyl trimethylammonium chloride, an inhibitor of gibberellin biosynthesis, to corresponding normal (nami) plants reduced both of stem length and endogenous gibberellin production.
