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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95 For more details click here
National Academy of Agricultural Sciences (NAAS) : NAAS Score: *5.38 (2017) [Effective from January 1, 2017]For more details click here
Indexed in



National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2017)
[Effective from January 1, 2017]
For more details click here

ICV 2015: 85.95
Index Copernicus ICI Journals Master List 2015 - IJCMAS--ICV 2015: 85.95
For more details click here
journals IJCMAS
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Original Research Articles

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2015: 85.95
NAAS RATING 2017: 5.38

Int.J.Curr.Microbiol.App.Sci.2017.6(4): 568-575
DOI: https://doi.org/10.20546/ijcmas.2017.604.068


Fluorescence Imaging for Crop Stress Monitoring: A Review
Brijesh Yadav1*, Chiranjeev Kumawat2, Anil Kumar Verma2,Dinesh Kumar Yadav3 and Poonam Yadav4
1Division of Agricultural Physics, Indian Agricultural Research Institute,New Delhi-110012, India
2Division of Soil Science and Agricultural Chemistry, Indian Agricultural Research Institute, New Delhi – 110012, India
3Division of Agricultural Chemicals, Indian Agricultural Research Institute,New Delhi – 110012, India
4SKN College of Agriculture, Jobner, Rajasthan -303029, India
*Corresponding author
Abstract:

Plants are exposed to a various biotic and abiotic stresses that can affect either directly or indirectly the photosynthetic performance of leaves. Several imaging techniques have been used to detect the early signs of stress by monitoring changes in water status, photosynthetic performance or structural modifications. Commonly, a more promising alternative technique is the use of chlorophyll fluorescence (ChF) which has a better agreement with photosynthesis and it has been used for the early detection of stress such as nutrient stress, heat stress, water stress, pathogen attack or herbicide toxicity. In plants, absorbed light can undergo three fates viz., photosynthetic quantum conversion, chlorophyll fluorescence (ChF) and heat dissipation. Under stress condition absorbed light cannot completely used for carbon fixation and this excess energy is re-emitted back at longer wavelength, known as chlorophyll fluorescence. The fluorescence images and the corresponding fluorescence ratio blue: red and blue: far-red are particularly sensitive to environmental changes and stress. Different fluorescence parameters like maximum quantum efficiency of PSII (FV/ Fm), photochemical quenching (qP) and quantum efficiency of PSII (ΙΈPSII) are used for stress monitoring. This technique is limited up to the single leaves or seedling stage of crop and sometimes, this technique does not appear suitable for the early detection of water stress.


Keywords: Chlorophyll fluorescence, Biotic stress, Abiotic stress, FV/ Fm.
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How to cite this article:

Chlorophyll fluorescence, Biotic stress, Abiotic stress, FV/ Fm.

Int.J.Curr.Microbiol.App.Sci. 6(4): 568-575. doi: https://doi.org/10.20546/ijcmas.2017.604.068