Fig. 1

Growth promotion in cucumber seedlings in response to two difference dosages of BVCs in the miniature greenhouse system. a Shoot fresh weight (g) was assessed at 7 and 14 days after BVC exposure. Representative examples of cucumber seedlings after 14 days of exposure to BVCs are shown in the photograph. b Area of first leaf measured 14 days after BVC exposure. c Representative photograph of cucumber root at 14 days after BVC exposure. d Root weight (g) assessed at 7 and 14 days after BVC exposure. Air and 1 mM BTH were used as negative and positive controls, respectively. Different letters indicate significant differences between treatments (P = 0.05 according to least significant difference). Error bars indicate the standard error. Each treatment group contained four replicates (four miniature greenhouses). The experiment was repeated three times with similar results