Abstract
Light-emitting diodes (LEDs) have shown high efficiency in growing plants both in vivo in greenhouses and in vitro, including clonal micropropagation. The purpose of this study was to analyze the effect of the spectral composition of LED irradiators with different proportions of red (RL) and blue (BL) light on the morphogenesis of microplants of the remontant form of common raspberry (Rubus idaeus L.) cv. Hercules and the selection valuable cultivar of downy birch (Betula pubescens Ehrh.), which is the object of a unified genetic breeding complex (UGBC), previously selected on the basis of drought resistance. In the variant 1, the RL/BL ratio was 80/20%, in the variant 2 it was 70/30%, in the control it was 50/50%. The LED in variant 1 contributed to the greatest increase in morphometric and anatomical characteristics in raspberry microplants, increasing the height of shoots, the number of leaves, stomata density, the height of the leaf epidermis and mesophyll. At the same time, an increase in the proportion of RL/BL led to an increase in the leaf area, leaf surface, and stomatal density in birch microclones; however, the anatomical characteristics of the leaf indicate a decrease in the height of epidermal cells and the size of mesophyll cells. Thus, the LED of option 1 can be recommended for use in clonal micropropagation of raspberries in greenhouses, to optimize growth processes and obtain healthy, normally formed plants, while birch requires additional selection of optimal spectral illumination conditions.
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Claims 6
Claim · model-written summary
The 80/20 RL/BL LED variant increased shoot height, leaf number and stomata density in raspberry microplants relative to the control.
- Taxon
- Rubus idaeus L.
_Rubus_idaeus_-_Feuillage.jpg?width=60)
Rubus idaeuse2 - Material
- cv. Herculese2
- Treatment
- the RL/BL ratio was 80/20%e3
- Outcome
- height of shoots, the number of leaves, stomata densitye1
- Direction
- increasinge1
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Rubus_idaeus_-_Feuillage.jpg?width=500)
Verbatim
e1“The LED in variant 1 contributed to the greatest increase in morphometric and anatomical characteristics in raspberry microplants, increasing the height of shoots, the number of leaves, stomata density, the height of the leaf epidermis and mesophyll”
e2“common raspberry (Rubus idaeus L.) cv. Hercules and the selection valuable cultivar of downy birch (Betula pubescens Ehrh.)”
e3“In the variant 1, the RL/BL ratio was 80/20%, in the variant 2 it was 70/30%, in the control it was 50/50%”
Claim · model-written summary
The 80/20 RL/BL LED variant increased the height of the leaf epidermis and mesophyll in raspberry microplants relative to the control.
- Taxon
- Rubus idaeus L.Rubus idaeuse2
- Material
- cv. Herculese2
- Treatment
- the RL/BL ratio was 80/20%e3
- Outcome
- the height of the leaf epidermis and mesophylle1
- Direction
- increasinge1
- Comparator
- controle3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The LED in variant 1 contributed to the greatest increase in morphometric and anatomical characteristics in raspberry microplants, increasing the height of shoots, the number of leaves, stomata density, the height of the leaf epidermis and mesophyll”
e2“common raspberry (Rubus idaeus L.) cv. Hercules and the selection valuable cultivar of downy birch (Betula pubescens Ehrh.)”
e3“In the variant 1, the RL/BL ratio was 80/20%, in the variant 2 it was 70/30%, in the control it was 50/50%”
Claim · model-written summary
Increasing the RL/BL proportion increased leaf area, leaf surface and stomatal density in birch microclones.
- Taxon
- Betula pubescens Ehrh.
Betula pubescense2 - Treatment
- the proportion of RL/BLe4
- Outcome
- leaf area, leaf surface, and stomatal densitye4
- Direction
- increasee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“an increase in the proportion of RL/BL led to an increase in the leaf area, leaf surface, and stomatal density in birch microclones”
e2“common raspberry (Rubus idaeus L.) cv. Hercules and the selection valuable cultivar of downy birch (Betula pubescens Ehrh.)”
Claim · model-written summary
Increasing the RL/BL proportion decreased the height of epidermal cells and the size of mesophyll cells in birch leaves.
- Taxon
- Betula pubescens Ehrh.Betula pubescense2
- Treatment
- the proportion of RL/BLe4
- Outcome
- height of epidermal cells and the size of mesophyll cellse5
- Direction
- decreasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“the anatomical characteristics of the leaf indicate a decrease in the height of epidermal cells and the size of mesophyll cells”
e2“common raspberry (Rubus idaeus L.) cv. Hercules and the selection valuable cultivar of downy birch (Betula pubescens Ehrh.)”
e4“an increase in the proportion of RL/BL led to an increase in the leaf area, leaf surface, and stomatal density in birch microclones”
Claim · model-written summary
The 80/20 RL/BL LED option can be recommended for use in clonal micropropagation of raspberries in greenhouses.
Verbatim
e6“the LED of option 1 can be recommended for use in clonal micropropagation of raspberries in greenhouses, to optimize growth processes and obtain healthy, normally formed plants”
Claim · model-written summary
Birch requires additional selection of optimal spectral illumination conditions.
Verbatim
e7“while birch requires additional selection of optimal spectral illumination conditions”
The same questions in other papers
light · growth · Rubus idaeus (red raspberry)Positive and negative results
6 papers in the same direction as this paper · 5 in the opposite direction
- positive
- no effect
- no effect
8 papers more in this group
See all 12 papers →light · physiology: gas exchange · Rubus idaeus (red raspberry)Results agree
1 paper in the same direction as this paper
- positive
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.