Proceedings of the Plant Resources Society of Korea Conference (한국자원식물학회:학술대회논문집)
- 2002.11b
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- Pages.12-12
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- 2002
In Vivo Measurement of Plant Vitality by the Fluorescence Transient
- Soonja Oh (Department of Life Science and Research Institute for Basic Sciences, Cheju National University) ;
- Koh, Seok-Chan (Department of Life Science and Research Institute for Basic Sciences, Cheju National University)
- Published : 2002.11.01
Abstract
The chlorophyll fluorescence combined with the O-J-I-P transients were examined in the leaves of the crinum plants (Crinum asiaticum var. japonicum BAK.), in order to satisfy the demand for rapid in vivo measurement of vitality, and to apply easily to approach questions of economical interest concerning the plant vitality. The photosynthetic efficiency, Fv/Fm, of crinum plants dramatically decreased depending on temperature drop in winter. In summer, the Fv/Fm values was lower in day time than at dawn and night, suggesting that photosynthetic efficiency is chronically photoinhibited in day time. In winter, there was no prominent diurnal fluctuations of Fv/Fm values. However, based on the O-J-I-P transient, PI
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