Abstract
With the development of the economy, the demand for cucumber quality is quickly increasing. The aim of this study was to elucidate the role that plant density plays in leaf photosynthesis, shoot dry matter distribution, yield and quality of cucumber in different cultivation periods under greenhouse conditions. Experimental treatments based on three plant density treatments (2.25, 3.0 and 3.75 plants m−2) were conducted in turn during three growth and harvest periods in a year. The results showed that the changes in photosynthesis and weekly yield per unit area were different and dependent on the harvest time, which was mainly induced by temperature and radiation. Interestingly, we found that reducing plant density did not significantly affect the photosynthesis of leaves and did not decrease weekly yield per unit area and total yield. Low-density treatment had the highest weekly yield per plant and total yield per plant in the three harvest periods, the highest ratio of dry matter being allocated to fruits and the highest contents of soluble sugar, total phenols, flavonoid, soluble protein, vitamin C (Vc), chlorophyll and carotenoids in fruits. Moreover, a relatively low nitrite content was found in fruits following low-density treatment. The study indicated that low-density treatment was associated with a high quality of fruits without reducing the cucumber’s total annual yield under natural light in the greenhouse. Hence, our study suggests that properly reducing cucumber plant density to 2.25 plants m−2 could be a practicable approach for greenhouses in Shanghai, China.
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Claims 10
Claim · model-written summary
Photosynthesis and weekly yield per area varied with harvest time, mainly because of temperature and radiation.
- Taxon
- Cucumber
Cucumis sativust0 - Organ / stage
- harvest timee0
- Outcome
- photosynthesis and weekly yield per unit areae0
- Qualifier
- temperature and radiatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the changes in photosynthesis and weekly yield per unit area were different and dependent on the harvest time, which was mainly induced by temperature and radiation”
t0“Cucumber”
Claim · model-written summary
Reducing cucumber density did not significantly affect leaf photosynthesis.
- Taxon
- CucumberCucumis sativust0
- Treatment
- reducing plant densitye0
- Outcome
- photosynthesis of leavese0
- Direction
- did not significantly affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reducing plant density did not significantly affect the photosynthesis of leaves”
t0“Cucumber”
Claim · model-written summary
Reducing cucumber density did not decrease weekly yield per area or total yield.
- Taxon
- CucumberCucumis sativust0
- Treatment
- reducing plant densitye0
- Outcome
- weekly yield per unit area and total yielde0
- Direction
- did not decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reducing plant density did not significantly affect the photosynthesis of leaves and did not decrease weekly yield per unit area and total yield”
t0“Cucumber”
Claim · model-written summary
Low density gave the highest weekly and total yield per cucumber plant in all three harvest periods.
- Taxon
- CucumberCucumis sativust0
- Treatment
- Low-density treatmente0
- Outcome
- weekly yield per plant and total yield per plante0
- Direction
- higheste0
- Qualifier
- three harvest periodse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low-density treatment had the highest weekly yield per plant and total yield per plant in the three harvest periods”
t0“Cucumber”
Claim · model-written summary
Low density gave the highest fraction of dry matter allocated to cucumber fruits.
- Taxon
- CucumberCucumis sativust0
- Treatment
- Low-density treatmente0
- Outcome
- ratio of dry matter being allocated to fruitse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low-density treatment had the highest weekly yield per plant and total yield per plant in the three harvest periods, the highest ratio of dry matter being allocated to fruits”
t0“Cucumber”
Claim · model-written summary
Low density gave the highest soluble sugar, total phenol and flavonoid contents in cucumber fruits.
- Taxon
- CucumberCucumis sativust0
- Organ / stage
- fruitse0
- Treatment
- Low-density treatmente0
- Outcome
- contents of soluble sugar, total phenols, flavonoide0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low-density treatment had the highest weekly yield per plant and total yield per plant in the three harvest periods, the highest ratio of dry matter being allocated to fruits and the highest contents of soluble sugar, total phenols, flavonoid, soluble protein, vitamin C (Vc), chlorophyll and carotenoids in fruits”
t0“Cucumber”
Claim · model-written summary
Low density gave the highest soluble protein, vitamin C and chlorophyll contents in cucumber fruits.
- Taxon
- CucumberCucumis sativust0
- Organ / stage
- fruitse0
- Treatment
- Low-density treatmente0
- Outcome
- soluble protein, vitamin C (Vc), chlorophylle0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low-density treatment had the highest weekly yield per plant and total yield per plant in the three harvest periods, the highest ratio of dry matter being allocated to fruits and the highest contents of soluble sugar, total phenols, flavonoid, soluble protein, vitamin C (Vc), chlorophyll and carotenoids in fruits”
t0“Cucumber”
Claim · model-written summary
Low density gave the highest carotenoid contents in cucumber fruits.
- Taxon
- CucumberCucumis sativust0
- Organ / stage
- fruitse0
- Treatment
- Low-density treatmente0
- Outcome
- carotenoidse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Low-density treatment had the highest weekly yield per plant and total yield per plant in the three harvest periods, the highest ratio of dry matter being allocated to fruits and the highest contents of soluble sugar, total phenols, flavonoid, soluble protein, vitamin C (Vc), chlorophyll and carotenoids in fruits”
t0“Cucumber”
Claim · model-written summary
Low density resulted in relatively low nitrite content in cucumber fruits.
- Taxon
- CucumberCucumis sativust0
- Organ / stage
- fruitse0
- Treatment
- low-density treatmente0
- Outcome
- nitrite contente0
- Direction
- relatively lowe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a relatively low nitrite content was found in fruits following low-density treatment”
t0“Cucumber”
Claim · model-written summary
The authors recommend reducing cucumber density to 2.25 plants m−2 for greenhouses in Shanghai.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- reducing cucumber plant density to 2.25 plants m−2e0
- Qualifier
- could be a practicable approache0
- Setting
- Shanghai, Chinae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“properly reducing cucumber plant density to 2.25 plants m−2 could be a practicable approach for greenhouses in Shanghai, China”
The same questions in other papers
density · yield · Cucumis sativus (cucumber)Positive and negative results
13 papers in the same direction as this paper · 5 in the opposite direction
- negative
- no effect
- no effect
15 papers more in this group
See all 19 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.