Abstract
The influence of training methods on the yields of cucumber (Cucumis sativus) was investigated in the aspects of root characteristics. The experiment was conducted in the new Nutrient Film Technique hydroponics system specially developed for cucumber production (Mitsubishi Chemical Aqua Solutions, Co., Ltd., Tokyo, Japan).The lowering training (LT) and the pinching training (PT) were used to manage the cucumber plant’s canopy during the growth cycle. At the end of the experiment, the xylem sap bleeding rate, the root biomass, the remaining aerial biomass and the main stem diameter were measured. In addition, individual fresh and dry weights of matured leaves at the lower, middle and upper parts of the plant’s canopy were measured during the growth period. The recorded fruits yield was used for a correlation test with the xylem sap bleeding rate. The results indicated that the sap bleeding rate, root dry weight and root dry and fresh weights ratio were significantly higher in LT treatment. Similarly, the remaining aerial biomass fresh weight was significantly greater in the same treatment. On the other hand, individual leaf fresh and dry weights and the main stem diameter were significantly greater in the PT treatment, at the middle and upper parts of the plant’s canopy. These results were explained by the fact that in the PT treatment, more carbohydrates produced by plants were apparently used to re-establish the pinched shoots at the expense of root production. Moreover, after pinching the lateral shoots, biomass production was improved due to the penetration of sunlight in the plant’s canopy. Considering the relationships between root traits and plant productivity, the LT method is suitable for a long-term cultivation due to its faster sap bleeding rate, which is necessary to stimulate root physiological activity and promote plant biomass production.
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Claims 7
Claim · model-written summary
Lowering training (LT) gave higher xylem sap bleeding rate, root dry weight and root dry and fresh weights ratio than pinching training (PT) in cucumber.
- Taxon
- cucumber
Cucumis sativust0 - Treatment
- lowering training (LT)e0
- Outcome
- sap bleeding rate, root dry weight and root dry and fresh weights ratioe1
- Direction
- highere1
- Comparator
- pinching training (PT)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber production”
e0“The lowering training (LT) and the pinching training (PT) were used to manage the cucumber plant”
e1“the sap bleeding rate, root dry weight and root dry and fresh weights ratio were significantly higher in LT treatment”
Claim · model-written summary
Lowering training (LT) gave greater remaining aerial biomass fresh weight than pinching training (PT) in cucumber.
- Taxon
- cucumberCucumis sativust0
- Treatment
- lowering training (LT)e0
- Outcome
- remaining aerial biomass fresh weighte2
- Direction
- greatere2
- Comparator
- pinching training (PT)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber production”
e0“The lowering training (LT) and the pinching training (PT) were used to manage the cucumber plant”
e2“the remaining aerial biomass fresh weight was significantly greater in the same treatment”
Claim · model-written summary
Pinching training (PT) gave greater individual leaf fresh and dry weights than lowering training (LT) at the middle and upper canopy of cucumber.
- Taxon
- cucumberCucumis sativust0
- Organ / stage
- middle and upper parts of the plante4
- Treatment
- pinching training (PT)e0
- Outcome
- individual leaf fresh and dry weightse3
- Direction
- greatere3
- Comparator
- lowering training (LT)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber production”
e0“The lowering training (LT) and the pinching training (PT) were used to manage the cucumber plant”
e3“individual leaf fresh and dry weights and the main stem diameter were significantly greater in the PT treatment”
e4“at the middle and upper parts of the plant”
Claim · model-written summary
Pinching training (PT) gave greater main stem diameter than lowering training (LT) in cucumber.
- Taxon
- cucumberCucumis sativust0
- Treatment
- pinching training (PT)e0
- Outcome
- main stem diametere3
- Direction
- greatere3
- Comparator
- lowering training (LT)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber production”
e0“The lowering training (LT) and the pinching training (PT) were used to manage the cucumber plant”
e3“individual leaf fresh and dry weights and the main stem diameter were significantly greater in the PT treatment”
Claim · model-written summary
Under pinching training, carbohydrates were apparently diverted to re-establish pinched shoots at the expense of root production in cucumber.
- Taxon
- cucumberCucumis sativust0
- Compound
- carbohydratese5
- Outcome
- root productione5
- Qualifier
- more carbohydrates produced by plants were apparently used to re-establish the pinched shootse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber production”
e5“in the PT treatment, more carbohydrates produced by plants were apparently used to re-establish the pinched shoots at the expense of root production”
Claim · model-written summary
Pinching the lateral shoots improved biomass production in cucumber, due to sunlight penetration into the canopy.
- Taxon
- cucumberCucumis sativust0
- Treatment
- pinching the lateral shootse6
- Outcome
- biomass productione6
- Direction
- improvede6
- Qualifier
- penetration of sunlight in the plante6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber production”
e6“after pinching the lateral shoots, biomass production was improved due to the penetration of sunlight in the plant”
Claim · model-written summary
The LT method is suitable for long-term cucumber cultivation because of its faster sap bleeding rate.
- Taxon
- cucumberCucumis sativust0
- Treatment
- LT methode7
- Outcome
- suitable for a long-term cultivatione7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“cucumber production”
e7“the LT method is suitable for a long-term cultivation due to its faster sap bleeding rate”
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See all 20 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.