Abstract
The present study was undertaken to evaluate the water status and fruit quality of Satsuma mandarin trees (Citrus unshiu Marc. cv. Okitsu wase) affected by changing the nutrient concentration and grown hydroponically from mid-September to harvest. The water potential of nutrient concentration was kept at -0.08 MPa as the control or gradually decreased to -0.43 MPa as the treatment. After the water potential of nutrient solution was lower than -0.30 MPa, both water potential and osmotic potential of leaves and vesicles of fruit gradually decreased as compared with those of control trees. However, turgor of both tissues was maintained at the same value during the treatment. As fruit growth nearly stopped for 30 days after the water potential of nutrient solution was lower than -0.30 MPa, the fruit size of high nutrient concentration was smaller than that of the control. The content of sucrose, fructose, and glucose of fruit grown under high nutrient concentration were significantly greater than those of the control, but acidity showed no differences in both treatments. The application of hydroponic culture indicated that it is possible to control plant water status, fruit growth, and to increase the sugar content of fruit by an increase in the nutrient concentration.
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Claims 7
Claim · model-written summary
Water potential gradually decreased after nutrient solution water potential fell below -0.30 MPa relative to controls.
- Taxon
- Satsuma Mandarin Trees
Citrus unshiut0 - Organ / stage
- leaves and vesicles of fruite0
- Treatment
- the water potential of nutrient solution was lower than -0.30 MPae0
- Outcome
- water potentiale0
- Direction
- decreasede0
- Comparator
- control treese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After the water potential of nutrient solution was lower than -0.30 MPa, both water potential and osmotic potential of leaves and vesicles of fruit gradually decreased as compared with those of control trees.”
t0“Satsuma Mandarin Trees”
Claim · model-written summary
Osmotic potential of leaves and vesicles of fruit gradually decreased after nutrient solution water potential fell below -0.30 MPa relative to controls.
- Taxon
- Satsuma Mandarin TreesCitrus unshiut0
- Organ / stage
- leaves and vesicles of fruite0
- Treatment
- the water potential of nutrient solution was lower than -0.30 MPae0
- Outcome
- osmotic potential of leaves and vesicles of fruite0
- Direction
- decreasede0
- Comparator
- control treese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“After the water potential of nutrient solution was lower than -0.30 MPa, both water potential and osmotic potential of leaves and vesicles of fruit gradually decreased as compared with those of control trees.”
t0“Satsuma Mandarin Trees”
Claim · model-written summary
Leaf and fruit vesicle turgor remained at the same value during treatment.
- Taxon
- Satsuma Mandarin TreesCitrus unshiut0
- Treatment
- treatmente0
- Outcome
- turgor of both tissuese0
- Direction
- maintained at the same valuee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, turgor of both tissues was maintained at the same value during the treatment.”
t0“Satsuma Mandarin Trees”
Claim · model-written summary
Fruit growth nearly stopped for 30 days after nutrient solution water potential fell below -0.30 MPa.
- Taxon
- Satsuma Mandarin TreesCitrus unshiut0
- Treatment
- the water potential of nutrient solution was lower than -0.30 MPae0
- Outcome
- fruit growthe0
- Direction
- nearly stoppede0
- Value
- 30 dayse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As fruit growth nearly stopped for 30 days after the water potential of nutrient solution was lower than -0.30 MPa, the fruit size of high nutrient concentration was smaller than that of the control.”
t0“Satsuma Mandarin Trees”
Claim · model-written summary
Fruit size under high nutrient concentration was smaller than control.
- Taxon
- Satsuma Mandarin TreesCitrus unshiut0
- Treatment
- high nutrient concentratione0
- Outcome
- fruit sizee0
- Direction
- smallere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“As fruit growth nearly stopped for 30 days after the water potential of nutrient solution was lower than -0.30 MPa, the fruit size of high nutrient concentration was smaller than that of the control.”
t0“Satsuma Mandarin Trees”
Claim · model-written summary
Fruit sucrose, fructose and glucose contents were significantly greater under high nutrient concentration than control.
- Taxon
- Satsuma Mandarin TreesCitrus unshiut0
- Treatment
- high nutrient concentratione0
- Outcome
- content of sucrose, fructose, and glucose of fruite0
- Direction
- greatere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of sucrose, fructose, and glucose of fruit grown under high nutrient concentration were significantly greater than those of the control, but acidity showed no differences in both treatments.”
t0“Satsuma Mandarin Trees”
Claim · model-written summary
Fruit acidity did not differ between treatments.
- Taxon
- Satsuma Mandarin TreesCitrus unshiut0
- Treatment
- high nutrient concentratione0
- Outcome
- aciditye0
- Direction
- no differencese0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The content of sucrose, fructose, and glucose of fruit grown under high nutrient concentration were significantly greater than those of the control, but acidity showed no differences in both treatments.”
t0“Satsuma Mandarin Trees”
The same questions in other papers
fertilization · growth · Citrus unshiu (satsuma mandarin)Positive and negative results
1 paper in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 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.