Fig. 3From: Nitric oxide is involved in hydrogen gas-induced cell cycle activation during adventitious root formation in cucumberEffect of HRW on the production of endogenous NO during adventitious rooting. The primary root system was removed from the hypocotyls of 5-d-old, germinated cucumber seedlings. NO levels of hypocotyls were determined by Greiss reagent in explants treatment with distilled water (control) or 50 % HRW for 24 h. Values (means ± SE) are the averages of three independent experiments (n = 3). Asterisks indicate that mean values are significantly different between the treatments of HRW and Control (P < 0.05) according to Duncan’s multiple testBack to article page