Figure 3.
Phenotype of StSUT4-RNAi plants. A, Plants with reduced StSUT4 expression show early flowering under LD conditions. ‘Désirée’ wild-type and StSUT4-RNAi10 plants after 5 weeks in the greenhouse. B, Internode elongation of potato ‘Désirée’ wild-type and StSUT4-RNAi plants. Quantification of internode elongation is shown in Figure 9C. C, Internodes of transformed potato andigena plants are reduced in length in comparison with andigena wild-type plants. andigena plants transformed with a StSUT4-RNAi construct showing reduced StSUT4 transcript levels are able to produce tubers even under LD conditions (D), whereas andigena wild type does not (E). StSUT4-RNAi2/5 shows early flowering compared to potato andigena wild-type plants grown under LD conditions (F).