Abstract
The difference in the levels of light intensity was responded with changes in morphophysiological and biochemical characters of plants, especially in leaves of black pepper. The aim of this study was to determine the effect of several levels of light intensity on the morphophysiological and biochemical characters of leaves of black pepper. The research was conducted in July - November 2017 in Kemuja, Mendobarat, Bangka Belitung. This study used split-plot design with three replications. The main plots were the levels of light intensity, namely 100%, 75%, and 50%. Subplots were varieties of black pepper, namely Petaling 1, Petaling 2, and Nyelungkup. The results showed that there was no interaction between varieties and light intensities. The morphophysiological and biochemical responses of the leaves of the three varieties tested were the same at all levels of light intensity. Light intensity up to 50% has no effect on leaf morphological characters, but leaves become thinner at lower light intensities. Chlorophyll, nitrate reductase activity and leaf sucrose concentration were same at all light intensities up to 50%. Plants exposed to higher light intensity have a higher number of stomata. The results concluded that the light intensity of up to 50% did not cause changes in leaf morphology and biochemistry and only affected leaf stomata density.
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Claims 6
Claim · model-written summary
Variety and light intensity showed no interaction.
- Taxon
- black pepper (Piper nigrum L.)
Piper nigrumt0 - Outcome
- interaction between varieties and light intensitiese0
- Direction
- no interactione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was no interaction between varieties and light intensities”
t0“black pepper (Piper nigrum L.)”
Claim · model-written summary
Leaf morphophysiological and biochemical responses were the same across three varieties and light intensities.
- Taxon
- black pepper (Piper nigrum L.)Piper nigrumt0
- Organ / stage
- leavese0
- Outcome
- morphophysiological and biochemical responsese0
- Direction
- the samee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The morphophysiological and biochemical responses of the leaves of the three varieties tested were the same at all levels of light intensity.”
t0“black pepper (Piper nigrum L.)”
Claim · model-written summary
Light intensity up to 50% did not affect leaf morphological characters.
- Taxon
- black pepper (Piper nigrum L.)Piper nigrumt0
- Treatment
- Light intensity up to 50%e0
- Outcome
- leaf morphological characterse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light intensity up to 50% has no effect on leaf morphological characters”
t0“black pepper (Piper nigrum L.)”
Claim · model-written summary
Leaves became thinner at lower light intensities.
- Taxon
- black pepper (Piper nigrum L.)Piper nigrumt0
- Treatment
- lower light intensitiese0
- Outcome
- leavese0
- Direction
- thinnere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaves become thinner at lower light intensities”
t0“black pepper (Piper nigrum L.)”
Claim · model-written summary
Chlorophyll, nitrate reductase activity and leaf sucrose concentration remained the same across light intensities up to 50%.
- Taxon
- black pepper (Piper nigrum L.)Piper nigrumt0
- Treatment
- light intensities up to 50%e0
- Outcome
- Chlorophyll, nitrate reductase activity and leaf sucrose concentratione0
- Direction
- samee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll, nitrate reductase activity and leaf sucrose concentration were same at all light intensities up to 50%.”
t0“black pepper (Piper nigrum L.)”
Claim · model-written summary
Higher light intensity was associated with more stomata.
- Taxon
- black pepper (Piper nigrum L.)Piper nigrumt0
- Treatment
- higher light intensitye0
- Outcome
- number of stomatae0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants exposed to higher light intensity have a higher number of stomata.”
t0“black pepper (Piper nigrum L.)”