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6 164 (0,094s)

Result

Excess irradiance causes early symptoms of senescence during leaf expansion in photoautotrophically in vitro grown tobacco plants

accelerated leaf development and caused early symptoms of leaf senescence. The symptoms were: decreasing chlorophyll a+b content and chlorophyll a/b ratio, decreasing both-photochemical quenching of chlorophyl...

EF - Botanika

  • 2008
  • Jx
Result

SPAD chlorophyll meter reading can be pronouncedly affected by chloroplast movement

Non-destructive assessment of chlorophyll content has recently been widely done by chlorophyll meters based on measurement of leaf transmittance. However, the leaf transmittance depends not only on the content of <...

BO - Biofyzika

  • 2010
  • Jx
Result

Factors of between- and within-plant distribution of Metopolophium dirhodum (Hom., Aphididae) on small grain cereals.

The relationship between abundance and leaf chlorophyll content of spring wheat, spring oats and winter barley was investigated. Aphid numbers on leaves of particular order (within-plant distribution) were correlated with leaf

GF - Choroby, škůdci, plevely a ochrana rostlin

  • 2002
  • Jx
Result

Response of grapevine leaves to Plasmopara viticola infection by means of measurement of reflectance and fluorescence signals.

in chlorophylls and carotenoids contents, respectively. Infected leaf tissue eResponse of grapevine leaf tissue naturally infected by Plasmopara viticola in field was measured by means of chlorophyll fluorescence ...

CE - Biochemie

  • 2012
  • Jx
  • Link
Result

Potential of the sentinel-2 red edge spectral bands for estimation of eco-physiological plant parameters

) for retrieval of the three eco-physiological plant parameters, leaf and canopy chlorophyll content and leaf area index (LAI), in case of maize agricultural fields and beech for canopy chlorophyll content, but les...

EH - Ekologie – společenstva

  • 2016
  • D
Result

What to Choose for Estimating Leaf Water Status—Spectral Reflectance or In vivo Chlorophyll Fluorescence?

parameters that sensitively reflect leaf water status. Parameters with this potential include those derived from leaf spectral reflectance (R) and chlorophyll fluorescence. As each of these methods probes completely differ...

Biophysics

  • 2024
  • Jimp
  • Link
Result

Leaf - age related differences in chlorophyll fluorescence.

Annotation not available...

EF - Botanika

  • 1997
  • Jx
Result

Determination of chlorophyll content in selected grass communities of Krkonoše mts. tundra based on laboratory spectroscopy and aerial hyperspectral dat

spectroradiometer. Canopy chlorophyll contents (CCC) were computed from the LCCs and green leafThe study focuses on the determination of chlorophyll content in four National Park, Czech Republic. We compared two methods fo...

Physical geography

  • 2022
  • D
  • Link
Result

The inexpensive tool for the determination of projected leaf area

Leaf area is useful basis for the expression of the photosynthetic activity, specific leaf area, content of chlorophylls and carotenoids, etc. However, commercial devices are quite expensive. Therefore, we propose a low cos...

BO - Biofyzika

  • 2004
  • Jx
Result

Chlorophyll fluorescence imaging of leaves and fruits

Chlorophyll fluorescence imaging provides a powerfull, non-invasive tool for investigating leaf photosynthesis under natural conditions. Applications of fluorescence to biotechnology. Fluorescence imaging reveals a wide range of int...

BO - Biofyzika

  • 2004
  • C
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