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http://dx.doi.org/10.5142/JGR.2002.26.2.085

Characteristics of Photosynthesis among New Cultivars of Ginseng (Panax ginseng C.A. Meyer)  

Lee, Sung-Sik (Korea Tobacco & Ginseng Central Research Institute, Suwon Experiment Station)
Publication Information
Journal of Ginseng Research / v.26, no.2, 2002 , pp. 85-88 More about this Journal
Abstract
This study was carried out to obtain information of the photosynthetic rate at various temperature and light intensity, stomata, chlorophyll, specific leaf weight, characteristics of aerial part and root in ginseng new cultivars developed by pure line selection. The light saturation point of leaves in new cultivars and Jakyungjong were 15,000 lux, and the optimum air temperature on the photosynthesis of new cultivars and Jakyungjong were 20$\^{C}$. The photosynthetic rates were increased in order of Jakyungjong, Gopoong, Chunpoong and Yunpoong. The dark respiration rate of leaves in ginseng cultivars were increased according to the increasing of temperature, and the dark respiration rate of leaves of Yunpoong was the highest among cultivars. The specific leaf weight (SLW) were increased in order of Jakyungjong, Yunpoong, Gopoong, Chunpoong, but total chlorophyll contents were not different among cultivars. Stomata frequency of Yunpoong was the highest being 69.2ea among cultivars, while the length of stomata was reverse. Yunpoong was superior in aerial part among ginseng cultivars : the number of stem was 1.8ea, the number of palmately leaves was 7.7ea, the number of leaflets was 41.0ea, leaf area was 12.3 dm$^2$ The root weight were increased in order of Jakyungjong, Gopoong, Chunpoong and Yunpoong. Chunpoong and Gopoong hove good root shape the length of tap root in Chunpoong and Gopoong were the longest being 6.5 cm and 6.8 cm respectively, but that in Yunpoong was the shortest being 4.4 cm.
Keywords
ginseng new cultivars; Chunpoong; Yunpoong; Gopoong; Jakyungjong; photosynthesis; light saturation point; dark respiration rate; specific leaf weight (SLW); stomata;
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