Explant/method used for hairy root transformation by A. rhizogenes K599

% of explants with transformed roots

% of GUS expressing roots

A. Infection of the twigs on rockwool support

60 - 70

30

B. Infection through cotyledonary node injection in intact seedlings

60 - 80

20 - 60

C. Infection at the cut end of the radicle severed, cotyledon-bearing seedling

100

100