Abstract
The effect of potassium on the water potential, the osmotic potential and the pressure potential in younger and older leaves of Phaseolus vulgaris grown in hydroponic culture was studied. Inadequate potassium supply resulted in an increase of the osmotic potential. In the older leaves the water potential was raised, in the younger leaves the pressure potential was depressed in the treatment insufficiently supplied with potassium as compared with leaves with an adequate potassium supply. Cell size of the younger leaves was smaller in the treatment with the low K + supply in comparison with the leaves well supplied with K + . Potassium had a beneficial effect on plant growth, especially on fresh matter production. The water status of leaves (water content, pressure potential, osmotic potential) responded more sensitively to potassium supply than dry matter production. Besides organic N and organic anions, K + was the most abundant solute found in the press sap of the leaves. From the results it is concluded that K + is indispensible for attaining an optimum potential (turgor) in young leaves which in turn has an impact on plant growth.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
Inadequate potassium supply increased the osmotic potential of Phaseolus vulgaris leaves.
- Taxon
- Phaseolus vulgaris
Phaseolus vulgarist0 - Treatment
- Inadequate potassium supplye1
- Outcome
- osmotic potentiale1
- Direction
- increasee1
- Setting
- hydroponic culturee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris”
e1“Inadequate potassium supply resulted in an increase of the osmotic potential”
e2“grown in hydroponic culture”
Claim · model-written summary
Under insufficient potassium supply the water potential of older leaves was raised relative to leaves with adequate potassium.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Organ / stage
- older leavese1
- Treatment
- insufficiently supplied with potassiume1
- Outcome
- water potentiale1
- Direction
- raisede1
- Comparator
- leaves with an adequate potassium supplye1
- Setting
- hydroponic culturee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris”
e1“In the older leaves the water potential was raised, in the younger leaves the pressure potential was depressed in the treatment insufficiently supplied with potassium as compared with leaves with an adequate potassium supply”
e2“grown in hydroponic culture”
Claim · model-written summary
Under insufficient potassium supply the pressure potential of younger leaves was depressed relative to leaves with adequate potassium.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Organ / stage
- younger leavese1
- Treatment
- insufficiently supplied with potassiume1
- Outcome
- pressure potentiale1
- Direction
- depressede1
- Comparator
- leaves with an adequate potassium supplye1
- Setting
- hydroponic culturee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris”
e1“In the older leaves the water potential was raised, in the younger leaves the pressure potential was depressed in the treatment insufficiently supplied with potassium as compared with leaves with an adequate potassium supply”
e2“grown in hydroponic culture”
Claim · model-written summary
Low potassium supply reduced cell size in younger leaves of Phaseolus vulgaris compared with well-supplied leaves.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Organ / stage
- younger leavese1
- Treatment
- low K + supplye1
- Outcome
- Cell sizee1
- Direction
- smallere1
- Comparator
- leaves well supplied with K +e1
- Setting
- hydroponic culturee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris”
e1“Cell size of the younger leaves was smaller in the treatment with the low K + supply in comparison with the leaves well supplied with K +”
e2“grown in hydroponic culture”
Claim · model-written summary
Potassium had a beneficial effect on plant growth, especially on fresh matter production, in Phaseolus vulgaris.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- Potassiume1
- Outcome
- plant growth, especially on fresh matter productione1
- Direction
- beneficial effecte1
- Setting
- hydroponic culturee2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris”
e1“Potassium had a beneficial effect on plant growth, especially on fresh matter production”
e2“grown in hydroponic culture”
Claim · model-written summary
The water status of leaves responded more sensitively to potassium supply than dry matter production.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Treatment
- potassium supplye1
- Outcome
- water status of leavese1
- Direction
- responded more sensitivelye1
- Comparator
- dry matter productione1
- Setting
- hydroponic culturee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris”
e1“The water status of leaves (water content, pressure potential, osmotic potential) responded more sensitively to potassium supply than dry matter production”
e2“grown in hydroponic culture”
Claim · model-written summary
Potassium was the most abundant solute, besides organic N and organic anions, in the press sap of Phaseolus vulgaris leaves.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Organ / stage
- leavese1
- Outcome
- most abundant solute found in the press sape1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris”
e1“Besides organic N and organic anions, K + was the most abundant solute found in the press sap of the leaves”
Claim · model-written summary
Potassium is indispensable for an optimum turgor in young leaves, which affects plant growth.
- Taxon
- Phaseolus vulgarisPhaseolus vulgarist0
- Organ / stage
- young leavese1
- Compound
- K +e1
- Outcome
- optimum potential (turgor)e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris”
e1“From the results it is concluded that K + is indispensible for attaining an optimum potential (turgor) in young leaves which in turn has an impact on plant growth”
The same questions in other papers
potassium · yield · Phaseolus vulgaris (common bean)Results differ
27 papers in the same direction as this paper · 9 in the opposite direction
- no effect
- no effect
- no effect
33 papers more in this group
See all 37 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.