Growth Characteristics and Germanium Absorption of Rice Plant with Different Germanium Concentrations in Soil

토양중 게르마늄 농도에 따른 벼의 생육 특성 및 게르마늄 흡수

  • Lee, Seong-Tae (Gyeongnam-do Agricultural Research and Extension Services) ;
  • Lee, Young-Han (Gyeongnam-do Agricultural Research and Extension Services) ;
  • Choi, Yong-Jo (Gyeongnam-do Agricultural Research and Extension Services) ;
  • Lee, Sang-Dae (Gyeongnam-do Agricultural Research and Extension Services) ;
  • Lee, Chun-Hee (Gyeongnam-do Agricultural Research and Extension Services) ;
  • Heo, Jong-Soo (Division of Applied Life Science, Gyeongsang National Univ.)
  • 이성태 (경상남도농업기술원 식물환경연구과) ;
  • 이영한 (경상남도농업기술원 식물환경연구과) ;
  • 최용조 (경상남도농업기술원 식물환경연구과) ;
  • 이상대 (경상남도농업기술원 식물환경연구과) ;
  • 이춘희 (경상남도농업기술원 식물환경연구과) ;
  • 허종수 (경상대학교 응용생명과학부)
  • Published : 2005.03.31


In order to obtain the basic information for agricultural utilization of Germanium(Ge), the growth characteristics and Ge absorption of rice plant were investigated with different Ge concentration in soil. Ge concentrations were treated with 0, 2.5, 5.0 7.5 and 10.0 mg/kg in pot(1/5,000a), respectively. As higher the Ge concentration in soil, the Ge absorption amount in straw, husk and brown rice were increased. But the yields were decreased with the increase of Ge phytotoxicity. When rice plant was grown more than 2.5 mg/kg Ge(as $GeO_2$) in the soil, growth was inhibited by germanium phytotoxicity and necrosis spots were observed in the rice leaf blades. Therefore the optimum concentration of Ge was less than 2.5 mg/kg in rice plant. When rice plant was cultivated on soil supplemented with 2.5 mg/kg Ge, Ge content in straw, husk and brown rice was 103.4, 30.2 and 3.02 mg/kg, respectively. The Ge content in plant was high in the order of straw > husk > brown rice. Most of the amino acids in rice were increased with the increase of Ge treatment, besides, total amino acid contents also increased.


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