The Effects of ozone on the greening of barley (Hordeum vulgare L.) seedling

보리 (Hordeum vulgare L.) 유식물의 녹화에 미치는 오존의 영향

  • 박강은 (경북대학교 사범대학 생물교육과) ;
  • 정화숙 (경북대학교 사범대학 생물교육과)
  • Published : 1996.08.01

Abstract

The effects of 0.2 ppm ozone on the developing chloroplast of barley (Hordeum vulgare L.) seedling during greening were examined by chlorophyll contents, photosynthetic electron tiansport activity, Fo, Fv and fluorescence quenching coefficient. Chlorophyll contents of seedling treated with ozone were not changed in comparison with the control during the 96 h greening experiment, but PS II activity of the chloroplasts of seedlings treated with ozone was decreases by- l5%. Fo was slightly decreased but Fv was decreases by 5% in comparison with the control, In fluorescence quenching analysis, qP and qE were decreased by 11% and 9%, respectively, in comparison with the control. These results suggest that oxidation site of PS II is the site affected mostly and PQ pool is also affected slightly by 0.2 ppm ozone.

Keywords

References

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