Phenotypes of the qua1-1 and qua1-2 Mutants Grown in Vitro or in the Greenhouse.

(A) Wild-type plant grown in vitro for 17 days in a 16-h-light/8-h-dark regime.

(B) qua1-1 mutant with a severe phenotype grown in vitro for 17 days in a 16-h-light/8-h-dark regime. The qua1-2 mutant displayed the same morphology as the qua1-1 mutant shown here.

(C) Phenotype of the wild type (WT) and qua1-1 and qua1-2 mutants grown for 7 days in vitro in the dark in the absence of sugar.

(D) Close-up view of the qua1-2 mutant grown for 7 days in vitro in the dark.

(E) Phenotype of a qua1-1 mutant that displays an almost wild-type morphology except for the protuberances (arrows) on the cotyledons. This phenotype is never observed for the qua1-2 mutant.

(F) Wild-type and qua1-1 mutant plants grown in the greenhouse.