Korean Journal of Environmental Agriculture (한국환경농학회지)

The Korean Society of Environmental Agriculture (한국환경농학회)
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Physiological Responses of Rice(Oryza sativa L.) Varieties to Ozone

벼 품종의 오존에 대한 생리적 반응

  • Chung, Il-Min (College of Agricultural and Life Science, Konkuk University) ;
  • Kim, Kwang-Ho (College of Agricultural and Life Science, Konkuk University) ;
  • Song, Dong-Kyu (College of Agricultural and Life Science, Konkuk University) ;
  • Kang, Byeung-Hoa (College of Natural Resources, Korea University)
  • 정일민 (건국대학교 농업생명과학대학) ;
  • 김광호 (건국대학교 농업생명과학대학) ;
  • 송동규 (건국대학교 농업생명과학대학) ;
  • 강병화 (고려대학교 자연자원대학)
  • Published : 1999.03.31
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Abstract

This experiment was conducted to select and utilize the tolerant rice varieties for ozone stress through comparing the physiological responses. In SOD activity, Backunchalbyeo which treated once by 0.15 ppm $0_3$, Ilpumbyeo and Inbujinado treated twice showed significantly different SOD activity compared with $non-O_3$ treatment. No significant difference of SOD activity in three-times $0_3$ treated Sangnambatbyeo and Hangangchalbyeo was found as compared to ($non-O_3$ treated)control, POD activity, when Sangnammbatbyeo, Hangsngchalbyeo, Ilpumbyeo and Inbujinado were sequently treated by third ozone, showed no significant difference between $O_3$ treatment and $non-O_3$. In the comparison of amino acid content in rice leaf blade between three times $O_3$ treatment and $non-0_3$ treatment in 3 varieties, phenylalanine content represent as increased quantities. Especially, in three times $0_3$ treatment of Sangnambatbyeo, phenylalanine content(O.66 mg/g) was significantly increased as compared with $non-O_3$. Visual-growing characters of Sangnembatbyeo were significantly different between $0_3$ treatment and non-treatment. However, grain-filling rate showed no difference. SOD and POD related to resistant mechanism were high activity. In addition, phenylalanine known as precursor which is synthesized resistant materials was increased by $0_3$ treatment. These results suggested that Sangnambatbyeo which increased SOD and POD activity, and phenylalanine content under ozone stress could be selected as a tolerant variety.

벼 품종의 오존처리에 대한 생리반응의 차이를 조사하여 내성품종을 선발하는데 이용하고자 실험을 실시한 결과는 다음과 같다. 1. SOD활성은 오존을 한번 처리 했을 때 백운찰벼, 두번 처리시 일품벼 및 인부지나도에서 무처리구와 차이를 보였으나, 세번 처리할 경우 상남밭벼, 한강찰벼를 제외한 모든 품종에서 처리간 유의성을 보였다. POD활성은 오존 세번 처리시 상남밭벼, 한강찰벼, 일품벼와 인부지나도에서 무치리구와 유의성을 보이지 않았다. 2. 벼 잎의 아미노산 함량은 오존처리구가 무처리구에 비해 phenylalanine함량이 높은 경향을 보였다. 특히 상남밭벼에서는 오존처리에 의한 phenylalanine 함량의 증가가 뚜렷하였다. 3. 상남밭벼는 오존처리구와 무처리간에 외관상의 생육특성은 차이가 있으나 등숙율에서는 차이가 인정되지 않았고, 저항성기작에 관여하는 물질로 알려진 SOD와 POD 활성도가 높으며, 특히 저항성물질의 합성에 관련되는 전구물질인 phenylalanine 함량이 오존처리구에서 증대되는 것으로 보아 오존내성이 강한 품종으로 생각된다.

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