KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Effect of Temperature Variables on Growth and Inorganic Nutrient Contents of Codonopsis lanceolata

  • Kwon, Soo-Jeong (Dept. of Food Nutrition and Cookery, Woosong College) ;
  • Seo, Dong-Yeon (Dept. of Hotel and Restaurant Culinary Art, Kunjang University) ;
  • Cho, Gab-Yeon (Dept. of Food Science and Biotechnology, Woosong University) ;
  • Lee, Moon-Soon (Dept. of Industrial Plant Science & Technology, Chungbuk National University) ;
  • Boo, Hee-Ock (WELLPHYTO Co. Ltd., BI Center, GIST) ;
  • Woo, Sun-Hee (Dept. of Crop Science, Chungbuk National University) ;
  • Kim, Hag-Hyun (Dept. of Food Nutrition and Cookery, Woosong College)
  • Received : 2016.03.10
  • Accepted : 2016.06.08
  • Published : 2016.06.30
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Abstract

This study was conducted to investigate the effects of temperature and shade, which are basic environmental conditions, on growth, yield, inorganic components, and general components of Codonopsis lanceolata, in order to obtain basic data for improving yield capacity. In natural light, in the 15, 20, and $25^{\circ}C$ groups, the plant heights ranged between 218.9 cm and 223.9 cm, and there was no significant difference between groups. However, the leaf size was larger in shade, and the leaf area was significantly larger in the 15 and $30^{\circ}C$ groups. In natural light, root length and diameter were shorter and thinner when the temperature was higher, and growth was highly suppressed at $30^{\circ}C$. With regards to macroelements, the contents of Na, Mg, and P increased as temperature increased, regardless of the plant part; however, no constant tendency was observed in K and Ca according to temperature. The contents of Mg and Ca (from highest to lowest) were in the order leaf>stem>root, whereas the contents of Na, P, and K were in the order stem>leaf>root. Contents of general components varied according to temperature, and were highest at $30^{\circ}C$. While the plant height was increased under the constant $25^{\circ}C$+DIF (Difference between day and night temperature) condition, growth was suppressed in the -DIF group, in which the night temperature was higher than the day temperature, which suggests that a change in night temperature is one of the factors that affects the growth of C. lanceolata. As in the growth of the above-ground parts, fresh weight of the root was high in the constant $25^{\circ}C$ group and +DIF group. Notably, it was more than 2.5 times the fresh weights in the constant $15^{\circ}C$ group, constant $20^{\circ}C$ group, and -15 DIF group.

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