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Present study was conducted to investigate the growth characteristics, carotenoid contents and peroxidase activity of Dendranthema indicum grown under different environmental conditions. Physiological growth characteristics, carotenoid content and peroxidase activity were studied in Dendranthema ind...

Present study was conducted to investigate the growth characteristics, carotenoid contents and peroxidase activity of Dendranthema indicum grown under different environmental conditions. Physiological growth characteristics, carotenoid content and peroxidase activity were studied in Dendranthema indicum, which was grown at highland (Daegwalryeng, 800 m above the sea level) and lowland (Gangneung, 20 m above the sea level), and the results were compared with those obtained in greenhouse and field at these sites in 2005. Photosynthetic photon flux (PPF) was the highest at the highland field. The UV A and UV B irradiation in highland wwas found to be significantly higher by 12.6 and 34.8%, respectively, than those in lowland. Average air temperature was 15.9~17.0℃ in the highland field, 20.3~20.8℃ in the highland greenhouse, 21.1~22.0℃ in the lowland field, and 22.5~24.4℃ in lowland greenhouse. Plant height in lowland was significantly greater. Wild flowers grown in highland in autumn flowered earlier than in lowland. Comparing the two environments, the carotenoid concentration of Dendranthema indicum grown at highland was greater than that at lowland. Plants in the higher altitude regions have a much more effective protection mechanism against oxidative damage as compared with plants in the lower altitude regions. The antioxidant protection required high amounts of carotenoids. The leaves of Dendranthema indicum grown in lowland showed the higher peroxidase activity.

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