Abstract
Abstract Growth of Rosa × hybrida ‘Meirutral’ under different spectral filters was evaluated. Two filters that altered far-red (730 nm)/red (660 nm) light (FR/R) were developed. One, a blue textile dye, increased FR/R by filtering out a portion of red light. The second, a salt (copper sulfate) decreased FR/R by filtering out a greater portion of far-red than red light. A third filter that did not alter light quality was the control. The filters were installed in specially built growth chambers. Photosynthetic photon flux (PPF) was adjusted to equal values in each chamber. Plants were significantly shorter and had higher leaf chlorophyll when grown under the reduced FR/R filter. The number of flower buds and number of buds showing color at termination of the experiment was not affected by light quality treatments.
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Claims 4
Claim · model-written summary
Reduced FR/R significantly shortened rose plants.
- Taxon
- Rosa × hybrida
Rosa hybrid cultivart0 - Material
- Meirutralt0
- Treatment
- reduced FR/R filtere0
- Outcome
- Plantse0
- Direction
- shortere0
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rosa × hybrida ‘Meirutral’”
e0“Plants were significantly shorter and had higher leaf chlorophyll when grown under the reduced FR/R filter.”
e1“A third filter that did not alter light quality was the control.”
Claim · model-written summary
Reduced FR/R increased rose leaf chlorophyll.
- Taxon
- Rosa × hybridaRosa hybrid cultivart0
- Material
- Meirutralt0
- Treatment
- reduced FR/R filtere0
- Outcome
- leaf chlorophylle0
- Direction
- highere0
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rosa × hybrida ‘Meirutral’”
e0“Plants were significantly shorter and had higher leaf chlorophyll when grown under the reduced FR/R filter.”
e1“A third filter that did not alter light quality was the control.”
Claim · model-written summary
Light-quality treatments did not affect the number of flower buds.
- Taxon
- Rosa × hybridaRosa hybrid cultivart0
- Material
- Meirutralt0
- Treatment
- light quality treatmentse0
- Outcome
- number of flower budse0
- Direction
- not affectede0
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rosa × hybrida ‘Meirutral’”
e0“The number of flower buds and number of buds showing color at termination of the experiment was not affected by light quality treatments.”
e1“A third filter that did not alter light quality was the control.”
Claim · model-written summary
Light-quality treatments did not affect the number of buds showing color.
- Taxon
- Rosa × hybridaRosa hybrid cultivart0
- Material
- Meirutralt0
- Treatment
- light quality treatmentse0
- Outcome
- number of buds showing colore0
- Direction
- not affectede0
- Comparator
- the controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rosa × hybrida ‘Meirutral’”
e0“The number of flower buds and number of buds showing color at termination of the experiment was not affected by light quality treatments.”
e1“A third filter that did not alter light quality was the control.”
The same questions in other papers
light · quality: postharvest · Rosa hybrid cultivarPositive and negative results
3 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
2 papers more in this group
See all 6 papers →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.