Fig. 5

GbTRP1-RNAi lines of cotton show enhanced resistance to V. dahliae. a Disease symptoms of wild type (WT) and GbTRP1-RNAi plants 12 days after inoculation with ‘V991’, Bars = 2 cm. b Disease index statistics of WT (YZ1), pi-1, pi-3 and pi-4 plants 12 days after inoculation with ‘V991’. c Eight plants of each lines were selected randomly for the observation of the dark and necrotic vascular bundles of the dissected stems; Bars = 1 mm. Images were obtained under an stereo fluorescence microscope