Abstract
In the master's thesis we studied the effect of natural UV radiation and water availability on the biomineral content in barley leaves (Hordeum vulgare L.). We sowed barley in troughs and placed them on an outdoor testing area. Half of the troughs were positioned under roof tiles that let through the entire light spectrum, while the other half were positioned under roof tiles that let through the visible part of the light spectrum and only about 10% of UV radiation. Each group also had two types of water availability; normal watering and drought. For all four treatments of plants, we measured the silicon and calcium content in the leaves, the reflectivity and transmittance of the leaves, as well as content, tissue thickness and structures on the surface of the leaves. We also monitored the physiological state of the plants, pigment content and conditions in the surrounding environment. The results of our studies showed that water availability affected the biomineral content of calcium and silicon in the leaves. UV radiation did not have a statistically significant effect on the content of these two elements in the leaves. The results of potential and actual photochemical effectiveness tests showed that unfavourable water availability and the level of natural UV radiation did not have a negative effect on the plants’ vitality. The results of morphological tests showed the greatest deviations in specific leaf surfaces, which were affected by water availability. We found that neither water availability nor natural UV radiation had an effect on the content of chlorophyll a and b, carotenoids and anthocyanins in the leaves. The transmittance and reflectivity of the leaves were greatest in the visible part of the spectrum.
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Claims 8
Claim · model-written summary
Water availability affected calcium and silicon content in barley leaves.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree1 - Organ / stage
- leavese0
- Treatment
- water availabilitye0
- Outcome
- biomineral content of calcium and silicon in the leavese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“water availability affected the biomineral content of calcium and silicon in the leaves”
e1“barley leaves (Hordeum vulgare L.)”
Claim · model-written summary
UV radiation had no statistically significant effect on calcium and silicon content.
- Taxon
- barleyHordeum vulgaree2
- Treatment
- UV radiatione0
- Outcome
- silicon and calcium content in the leavese1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“UV radiation did not have a statistically significant effect on the content of these two elements in the leaves”
e1“silicon and calcium content in the leaves”
e2“barley leaves (Hordeum vulgare L.)”
Claim · model-written summary
Unfavourable water availability did not negatively affect barley vitality.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- unfavourable water availabilitye0
- Outcome
- plants’ vitalitye0
- Direction
- did not have a negative effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“unfavourable water availability and the level of natural UV radiation did not have a negative effect on the plants’ vitality”
e1“barley leaves (Hordeum vulgare L.)”
Claim · model-written summary
Natural UV radiation did not negatively affect barley vitality.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- the level of natural UV radiatione0
- Outcome
- plants’ vitalitye0
- Direction
- did not have a negative effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“unfavourable water availability and the level of natural UV radiation did not have a negative effect on the plants’ vitality”
e1“barley leaves (Hordeum vulgare L.)”
Claim · model-written summary
Water availability affected specific leaf surfaces, the largest morphological deviation.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- water availabilitye0
- Outcome
- specific leaf surfacese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“greatest deviations in specific leaf surfaces, which were affected by water availability”
e1“barley leaves (Hordeum vulgare L.)”
Claim · model-written summary
Water availability had no effect on leaf chlorophyll a and b, carotenoids and anthocyanins.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- water availabilitye0
- Outcome
- content of chlorophyll a and b, carotenoids and anthocyanins in the leavese0
- Direction
- had an effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neither water availability nor natural UV radiation had an effect on the content of chlorophyll a and b, carotenoids and anthocyanins in the leaves”
e1“barley leaves (Hordeum vulgare L.)”
Claim · model-written summary
Natural UV radiation had no effect on leaf chlorophyll a and b, carotenoids and anthocyanins.
- Taxon
- barleyHordeum vulgaree1
- Treatment
- natural UV radiatione0
- Outcome
- content of chlorophyll a and b, carotenoids and anthocyanins in the leavese0
- Direction
- had an effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“neither water availability nor natural UV radiation had an effect on the content of chlorophyll a and b, carotenoids and anthocyanins in the leaves”
e1“barley leaves (Hordeum vulgare L.)”
Claim · model-written summary
Leaf transmittance and reflectivity were greatest in the visible spectrum.
- Taxon
- barleyHordeum vulgaree1
- Organ / stage
- leavese0
- Outcome
- transmittance and reflectivitye0
- Direction
- greateste0
- Setting
- visible part of the spectrume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“transmittance and reflectivity of the leaves were greatest in the visible part of the spectrum”
e1“barley leaves (Hordeum vulgare L.)”
The same questions in other papers
uv · physiology: pigments · Hordeum vulgare (barley)Results differ
4 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- no effect
3 papers more in this group
See all 7 papers →uv · nutrient: content · Hordeum vulgare (barley)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
- negative
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.