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SUMMARY:Non-invasive estimation of duckweed biomass quality can be achieva
 ble by spectral signatures
DTSTART;VALUE=DATE-TIME:20261001T074500Z
DTEND;VALUE=DATE-TIME:20261001T080000Z
DTSTAMP;VALUE=DATE-TIME:20260916T011537Z
UID:indico-contribution-2922@cern.ch
DESCRIPTION:Speakers: Viktor Oláh (Department of Botany\, Faculty of Scie
 nce and Technology\, University of Debrecen)\nCommercial duckweed cultivat
 ion may require regular monitoring of biomass quality\, but chemical analy
 ses can be laborious and costly. Optical signatures –that is selective l
 ight absorbance- of fronds would offer a promising alternative\, yet repor
 ts on testing such proxies on duckweeds are still scarcely available. To a
 ddress this knowledge gap\, we tested light transmittance- and reflectance
 -derived indices of duckweed fronds as quick tools in estimating biomass q
 uality.\n\nWe analyzed biochemical and optical traits in a total of 9 duck
 weed clones belonging to 3 widely spread species with economic potential: 
 *Lemna gibba*\, *Lemna minor* and *Spirodela polyrhiza*. The plants were c
 ultivated in a growth chamber under 2 different light intensities\, and th
 e studied parameters included relative growth rate\, dry matter content\, 
 protein and photosynthetic pigment contents\, as well as various indices d
 erived from hyperspectral reflectance spectra and frond transmittance.\n\n
 Our results indicated strongly interrelated frond traits. Reflectance indi
 ces also correlated well with protein and photosynthetic pigment concentra
 tions in the biomass. Similarly\, frond transmittance assessed by a handhe
 ld chlorophyll meter proved to be reliable in estimating protein content o
 f the biomass. Optical signatures\, therefore\, can be applicable in routi
 ne monitoring of biomass quality and physiological status of duckweed cult
 ures in larger-scale applications too.\n\nThis research was funded by the 
 NKFIH OTKA grant No. FK 134296. Viktor Oláh was supported by the János B
 olyai Research Scholarship of the Hungarian Academy of Sciences and by the
  University of Debrecen Program for Scientific Publication.\n\nhttps://ind
 ico.unina.it/event/117/contributions/2922/
LOCATION:Department of Agricultural Sciences of the University of Napoli F
 ederico II\, Portici\, Italy Sala Cinese
URL:https://indico.unina.it/event/117/contributions/2922/
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