NASC

High Resolution Image

Phenotype

most extreme allele; resemble wild-type plants that have been repeatedly treated with G.A.; long hypocotyls, erect rosette leaves, light green colour, early flowering and parthenocarpy; stem elongation is increased caused primarily by an increase in internode length; early stem elongation is so rapid that flower buds occasionally remain wrapped in the yet unfolded cauline leaves resulting in bending of the main stem; partial male sterility (greatly reduced when plants grown at 18C); altered gibberellin signal transduction, resistant to the gibberellin (G.A.) biosynthesis inhibitor paclobutrazol.