摘要
A dynamic fluorescence image index system capable of non-destructive assessment of water stress in cabbage seedlings was developed. The quenching curves of chlorophyll fluorescence characteristic to the plant's water stress status under reduced excitation energy were acquired via a multispectral imaging system. The dynamic fluorescence index (DFI), a fluorescence index derived from quantitative modeling of the quenching curves in this study, was found superior to conventional indices such as the fluorescence decrease ratio (Rfd) in evaluating water stress status in cabbage seedlings, with respect to due mainly to its significantly reduced measuring time and enhanced precision of the chlorophyll fluorescence responses. The best results of the quantitative model to predict water stress status of seedlings using the dynamic fluorescence index were r= 0.944 and SEE = 0.286. MPa using the 720. nm channel. The blue (460. nm) LED-excited fluorescence multispectral imaging system (FMSIS) coupled with DFI provides a powerful research tool for plant physiology studies as well as for improving greenhouse and agriculture management practices where quantitative assessment of water potential in leafy plants is critical.
原文 | 英語 |
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頁(從 - 到) | 127-133 |
頁數 | 7 |
期刊 | Computers and Electronics in Agriculture |
卷 | 72 |
發行號 | 2 |
DOIs | |
出版狀態 | 已發佈 - 7月 2010 |
對外發佈 | 是 |
ASJC Scopus subject areas
- 農學與作物科學
- 園藝科學
- 森林科學
- 電腦科學應用
- 動物科學與動物學