Paper · 2010 · Journal of Plant Nutrition

POTASSIUM SULFATE IMPROVES WATER DEFICIT TOLERANCE IN MELON PLANTS GROWN UNDER GLASSHOUSE CONDITIONS

A. Levent Tuna; Cengiz Kaya; Muhammad Ashraf

7
claims
13
verbatim quotes
48
citations
1
research areas
—
Not open access

Abstract

Interactive effects of water stress and potassium (K) on some physiological attributes and nutritional status of melon (Cucumis melo L. cv. ‘Tempo F1’) plants were assessed in a pot experiment. Treatments used were: (1) control or well-watered (WW) + K1, (2) WW + K2, (3) WW + K3, (4) water stress (WS) + K1, (5) WS + K2, and (6) WS + K3. Water stress (WS) was imposed by maintaining the moisture level equivalent to 50% pot capacity, whereas well-watered (WW) pots (control) were maintained at full pot capacity (100% PC). Hoagland's nutrient solution was modified to supply K as potassium sulfate (K2SO4) at 6, 9, and 12 mM for K1, K2, and K3 treatments, respectively. Water stress reduced fruit yield, total dry matter, chlorophyll content and relative water content (RWC), but increased proline accumulation in the melon plants. However, additional supply of K as 3 or 6 mM significantly enhanced all the earlier mentioned physiological parameters, but the values were still not the same as the levels of the control treatment. Water stress also reduced leaf calcium (Ca) and K of the melon plants, but additional supply of K to the root zone increased the levels of both nutrients much higher than those at the control (C) treatment. Our study revealed that additional supply of K improved water stress tolerance in melon plants by enhancing chlorophyll, relative water content and concentrations of some essential nutrients in leaves.

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Claims 7

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water stress reduced fruit yield and total dry matter of melon plants.

Taxon
melon plantsCucumis meloe0
Treatment
Water stresse0
Outcome
fruit yield, total dry mattere0
Direction
reducede0
Comparator
well-waterede1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis melo
Cucumis melo · TaxonUSDA photo by Scott Bauer. Image Number K7355-11. · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Water stress reduced fruit yield, total dry matter, chlorophyll content and relative water content (RWC), but increased proline accumulation in the melon plants”

✓ located verbatim in the source · abstract, characters 671–831 · show in text ↑
e1

“well-watered (WW) pots (control)”

✓ located verbatim in the source · abstract, characters 443–475 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water stress reduced chlorophyll content and relative water content of melon plants.

Taxon
melon plantsCucumis meloe0
Treatment
Water stresse0
Outcome
chlorophyll content and relative water content (RWC)e0
Direction
reducede0
Comparator
well-waterede1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis melo
Cucumis melo · TaxonUSDA photo by Scott Bauer. Image Number K7355-11. · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Water stress reduced fruit yield, total dry matter, chlorophyll content and relative water content (RWC), but increased proline accumulation in the melon plants”

✓ located verbatim in the source · abstract, characters 671–831 · show in text ↑
e1

“well-watered (WW) pots (control)”

✓ located verbatim in the source · abstract, characters 443–475 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Water stress increased proline accumulation in melon plants.

Taxon
melon plantsCucumis meloe0
Treatment
Water stresse0
Outcome
proline accumulatione0
Direction
increasede0
Comparator
well-waterede1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis melo
Cucumis melo · TaxonUSDA photo by Scott Bauer. Image Number K7355-11. · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Water stress reduced fruit yield, total dry matter, chlorophyll content and relative water content (RWC), but increased proline accumulation in the melon plants”

✓ located verbatim in the source · abstract, characters 671–831 · show in text ↑
e1

“well-watered (WW) pots (control)”

✓ located verbatim in the source · abstract, characters 443–475 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Additional K supply of 3 or 6 mM significantly enhanced all the earlier mentioned physiological parameters (yield, dry matter, chlorophyll, relative water content, proline) of water-stressed melon plants, though values stayed below the control.

Taxon
melonCucumis melot0
Treatment
additional supply of K as 3 or 6 mMe0
Outcome
all the earlier mentioned physiological parameterse0
Direction
enhancede0
Qualifier
values were still not the same as the levels of the control treatmente0

Not reportedComparator

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis melo
Cucumis melo · TaxonUSDA photo by Scott Bauer. Image Number K7355-11. · Public domain · Wikimedia Commons ↗

Verbatim

e0

“additional supply of K as 3 or 6 mM significantly enhanced all the earlier mentioned physiological parameters, but the values were still not the same as the levels of the control treatment”

✓ located verbatim in the source · abstract, characters 842–1030 · show in text ↑
t0

“MELON”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Water stress reduced leaf calcium and potassium of melon plants.

Taxon
melon plantsCucumis meloe0
Organ / stage
leafe0
Treatment
Water stresse0
Outcome
leaf calcium (Ca) and Ke0
Direction
reducede0
Comparator
well-waterede1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis melo
Cucumis melo · TaxonUSDA photo by Scott Bauer. Image Number K7355-11. · Public domain · Wikimedia Commons ↗

Verbatim

e0

“Water stress also reduced leaf calcium (Ca) and K of the melon plants”

✓ located verbatim in the source · abstract, characters 1032–1101 · show in text ↑
e1

“well-watered (WW) pots (control)”

✓ located verbatim in the source · abstract, characters 443–475 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Additional K supply to the root zone increased leaf Ca and K of melon plants to levels much higher than the control treatment.

Taxon
melonCucumis melot0
Treatment
additional supply of K to the root zonee0
Outcome
levels of both nutrientse0
Direction
increasede0
Comparator
control (C) treatmente0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis melo
Cucumis melo · TaxonUSDA photo by Scott Bauer. Image Number K7355-11. · Public domain · Wikimedia Commons ↗

Verbatim

e0

“additional supply of K to the root zone increased the levels of both nutrients much higher than those at the control (C) treatment”

✓ located verbatim in the source · abstract, characters 1107–1237 · show in text ↑
t0

“MELON”

✓ located verbatim in the source · title, characters 54–59 · show in text ↑
Mechanismauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors conclude that additional K improved water stress tolerance in melon by enhancing chlorophyll, relative water content and concentrations of some essential leaf nutrients.

Taxon
melon plantsCucumis meloe0
Treatment
additional supply of Ke0
Outcome
water stress tolerancee0
Qualifier
enhancing chlorophyll, relative water content and concentrations of some essential nutrients in leavese0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Cucumis melo
Cucumis melo · TaxonUSDA photo by Scott Bauer. Image Number K7355-11. · Public domain · Wikimedia Commons ↗

Verbatim

e0

“additional supply of K improved water stress tolerance in melon plants by enhancing chlorophyll, relative water content and concentrations of some essential nutrients in leaves”

✓ located verbatim in the source · abstract, characters 1263–1439 · show in text ↑

drought · yield · Cucumis melo (muskmelon)Results differ

16 papers: 3 positive, 13 negative or no effect

12 papers in the same direction as this paper · 3 in the opposite direction

  1. positive
  2. negative
  3. positive

12 papers more in this group

See all 16 papers →

drought · physiology: water · Cucumis melo (muskmelon)Results differ

17 papers: 5 positive, 12 negative or no effect

11 papers in the same direction as this paper · 5 in the opposite direction

  1. negative
  2. positive
  3. positive

13 papers more in this group

See all 17 papers →

drought · nutrient: content · Cucumis melo (muskmelon)Results agree

2 papers: 0 positive, 2 negative or no effect

1 paper in the same direction as this paper

  1. negative
See all 2 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.