Figure 6. Height development of mung beans under different levels of density and UV-B radiation.

The height of the isolated and low- density group plants was measured each month (branch number, leaf number, crown width, and leaf area per plant was also measured). Three symbols represent ambient conditions (-□-), low-enhanced UV-B radiation (-○-), and high-enhanced UV-B radiation (-△-). There were n = 9 plants for the isolated group (9 pots for each panel), but the morphology of five plants (low-density group) in the second month and eleven plants (low-density group) in the last month were unfortunately destroyed by an accident. Thus, there were n = 63 plants for low-density group in the first month (9 pots), n = 58 plants in the second month (9 pots), and n = 52 plants in the third month (9 pots). The number next to each point indicates the SD.