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논문 기본 정보

자료유형
학술저널
저자정보
Chung, Hwa-Sook (Department of Biology Eduction, Kyungpook National University)
저널정보
한국식물학회 식물학회지 식물학회지 제41권 제1호
발행연도
1998.1
수록면
37 - 42 (6page)

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Effects of UV-B radiation on the developing chloroplast of barley (Hordeum vulgare L.) seedling during greening were determined by Chl contents, Fo, Fv and fluorescence quenching coefficients. In greening of etiolated barley seedling, the value of Fo was greatly increased after the initiation of greening. However Fv and Fv/Fo were gradually increased. In greening with the additional irradiation of UV-B radiation, the value of Fo was strikingly decreased than that of the control after the initiation of greening, but Fv was gradually decreased from than that of the control during the greening period. These results suggest that the function of lightharvesting Chl are more sensitive than photosynthetic electron transport system by UV-B. Chl contents, Fv/Fo, qP and qNP, were decreased from than that of the control during the 72 h greening, especially, qR was strikingly decreased, but qE was slightly decreased by UV-B. These suggest that the sites of inhibition by UV-B are PSII and all sites of photosynthetic electron transport system. But PQ pool seems to be slightly inhibited by UV-B.

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