Weed & Turfgrass Science

The Korean Society of Weed Science & The Turfgrass Society of Korea Archive (한국잡초학회 & 한국잔디학회)
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Moisture Sorption Isotherms of Four Echinochloa Species Seeds

피속 잡초 종자의 등온흡습곡선 특성

  • Lee, Yong Ho (Seedbank of Wild resource plant, Korea University) ;
  • Byun, Ji Young (Department of Plant Life and Environmental Science/Institute of Ecological Plant Science, Hankyong National University) ;
  • Na, Chae Sun (Department of Plant Life and Environmental Science/Institute of Ecological Plant Science, Hankyong National University) ;
  • Kim, Tae Wan (Department of Plant Life and Environmental Science/Institute of Ecological Plant Science, Hankyong National University) ;
  • Kim, Jeong-Gyu (Seedbank of Wild resource plant, Korea University) ;
  • Hong, Sun Hee (Seedbank of Wild resource plant, Korea University)
  • 이용호 (고려대학교 야생자원식물종자은행) ;
  • 변지영 (한경대학교 농업생명과학대학) ;
  • 나채선 (한경대학교 농업생명과학대학) ;
  • 김태완 (한경대학교 농업생명과학대학) ;
  • 김정규 (고려대학교 야생자원식물종자은행) ;
  • 홍선희 (고려대학교 야생자원식물종자은행)
  • Received : 2015.05.04
  • Accepted : 2015.06.08
  • Published : 2015.06.30
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Abstract

The equilibrium moisture contents (EMC) in seeds of four Echinochloa (E. crus-galli var. crus-galli, E. crus-galli var, echinata, E. crus-galli var. praticola, E. esculenta) were measured at $20^{\circ}C$ with equilibration over a series of lithium chloride solutions with relative humidities ranging from 0.11 to 0.8 to determine sorption isotherms and safe storage relative humidity. Standard seed sorption isotherm models i.e. modified Henderson, modified Chung-Pfost, modified Halsey, modified Oswin and Guggenheim-Anderson-deBoer (GAB) equations were adopted to evaluate the goodness of fit to sorption isotherms. This study indicated that EMC of seeds was significantly different in four Echinochloa species at various relative humidity. The modified Oswin equations for E. crus-galli var. crou-galli, E. crus-galli var, echinata, E. esculenta and GAB equation for E. crus-galli var. praticola were adequate models for the EMC data. Seeds of four Echinochloa species have monolayer moisture contents when stored at RH < 0.1. These results show that seed moisture isotherm model should be selected according to genetic variation.

Keywords

References

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