ANTHER DWARF 1 DWARF- 2 DWaRF-3 DWARF-5 DWaRF 8 

 .AR~l 



Fig. 1. Growth response of the mutants, anther ear 1, dwarf 1, dwarf 2, dwarf 3, 

 dwarf 5, and dwarf 8, to gibberelHc acid; treated mutants above, controls below. 

 Dominant dwarf is a nonresponder; the other five nonallelic mutants are GA3 

 responders. GA3 was added in aqueous solution to the uppermost unfolding 

 leaves at two- to three-day intervals from the earliest seedling stage to maturity; 

 dosages varied from 1 to 10 ^g. per treatment; total amount applied was 300^g. 



