Abstract
To harvest marketable cucumbers, high quality seedlings must be used. Producing seedlings in the greenhouse during the low radiation period decreases marketability due to insufficient light for growth. Supplemental lighting with artificial light of different quality can be used to improve low light conditions and produce high quality seedlings. Therefore, this study was conducted to select the appropriate supplemental light sources on the growth and seedling quality of grafted cucumber seedlings during the low radiation period. Three cultivars of cucumber were used as scions for grafting; ‘NakWonSeongcheongjang’, ‘Sinsedae’, and ‘Goodmorning baekdadagi’. Figleaf gourd (Cucurbita ficifolia) ‘Heukjong’ was used as the rootstock. The seeds were sown on January 26, 2023, and grafted on February 9, 2023. After graft-taking, cucumbers in plug trays were treated with RB light-emitting diodes (LED, red and blue LED, red:blue = 8:2), W LED (white LED, R:G:B = 5:3:2), and HPS (high-pressure sodium lamp), respectively. Non-treatment was used as the control. Supplemental lighting was applied 2 hours before sunrise and 2 hours after sunset for 19 days. The stem diameter and fresh and dry weights of roots did not differ significantly by supplemental light sources. The plant height and hypocotyl length were decreased in W LED. However, the leaf length, leaf width, leaf area, and fresh and dry weights of shoots were the highest in the RB LED. Seedling qualities such as crop growth rate, net assimilation rate, and compactness were also increased in RB LED and W LED. After transplanting, most of the growth was not significant, but early yield of cucumber was higher in LED than non-treatment. In conclusion, using RB LED, W LED for supplemental light source during low radiation period in grafted cucumber seedlings improved growth, seedling quality, and early yield of cucumber.
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Claims 8
Claim · model-written summary
RB LED gave the highest leaf length, leaf width and leaf area of grafted cucumber seedlings.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- RB LEDe3
- Outcome
- leaf length, leaf width, leaf areae3
- Direction
- higheste3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grafted Cucumber Seedlings”
e3“the leaf length, leaf width, leaf area, and fresh and dry weights of shoots were the highest in the RB LED”
Claim · model-written summary
RB LED gave the highest fresh and dry shoot weights of grafted cucumber seedlings.
- Taxon
- cucumberCucumis sativust0
- Treatment
- RB LEDe3
- Outcome
- fresh and dry weights of shootse3
- Direction
- higheste3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grafted Cucumber Seedlings”
e3“the leaf length, leaf width, leaf area, and fresh and dry weights of shoots were the highest in the RB LED”
Claim · model-written summary
W LED decreased plant height and hypocotyl length of grafted cucumber seedlings.
- Taxon
- cucumberCucumis sativust0
- Treatment
- W LEDe2
- Outcome
- plant height and hypocotyl lengthe2
- Direction
- decreasede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grafted Cucumber Seedlings”
e2“The plant height and hypocotyl length were decreased in W LED”
Claim · model-written summary
RB LED increased crop growth rate, net assimilation rate and compactness of grafted cucumber seedlings.
- Taxon
- cucumberCucumis sativust0
- Treatment
- RB LEDe4
- Outcome
- crop growth rate, net assimilation rate, and compactnesse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grafted Cucumber Seedlings”
e4“Seedling qualities such as crop growth rate, net assimilation rate, and compactness were also increased in RB LED and W LED”
Claim · model-written summary
W LED increased crop growth rate, net assimilation rate and compactness of grafted cucumber seedlings.
- Taxon
- cucumberCucumis sativust0
- Treatment
- W LEDe4
- Outcome
- crop growth rate, net assimilation rate, and compactnesse4
- Direction
- increasede4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grafted Cucumber Seedlings”
e4“Seedling qualities such as crop growth rate, net assimilation rate, and compactness were also increased in RB LED and W LED”
Claim · model-written summary
Stem diameter and fresh and dry root weights did not differ significantly among supplemental light sources.
- Taxon
- cucumberCucumis sativust0
- Treatment
- supplemental light sourcese1
- Outcome
- stem diameter and fresh and dry weights of rootse1
- Direction
- did not differe1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grafted Cucumber Seedlings”
e1“The stem diameter and fresh and dry weights of roots did not differ significantly by supplemental light sources”
Claim · model-written summary
After transplanting, most growth of cucumber did not differ significantly under LED.
- Taxon
- cucumberCucumis sativust0
- Treatment
- LEDe5
- Outcome
- growthe5
- Direction
- was not significante5
- Comparator
- non-treatmente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grafted Cucumber Seedlings”
e5“After transplanting, most of the growth was not significant, but early yield of cucumber was higher in LED than non-treatment”
Claim · model-written summary
Early yield of cucumber was higher under LED than without treatment.
- Taxon
- cucumberCucumis sativust0
- Treatment
- LEDe5
- Outcome
- early yield of cucumbere5
- Direction
- highere5
- Comparator
- non-treatmente5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Grafted Cucumber Seedlings”
e5“After transplanting, most of the growth was not significant, but early yield of cucumber was higher in LED than non-treatment”
The same questions in other papers
light · yield · Cucumis sativus (cucumber)Results differ
16 papers in the same direction as this paper · 12 in the opposite direction · 2 reporting no difference from an alternative
- negative
- no effect
- negative
27 papers more in this group
See all 31 papers →light · growth · Cucumis sativus (cucumber)Results differ
52 papers in the same direction as this paper · 29 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- positive
79 papers more in this group
See all 83 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.