Abstract
Abstract Four cultivars of Phaseolus vulgaris L., Carioca, Venezuela‐ 350, Rio Tibagi and Negro Argel, were grown to maturity in a glass house with a low (1 mol m‐3) and a high (4.5 mol m‐3) potassium supply. Potassium stimulated nitrogenase activity (acetylene reduction) and the accumulation of ureides in pod walls of Carioca and Negro Argel, cultivars which had the highest rates of acetylene reduction. In three of the four cultivars the higher level of potassium nutrition resulted in a greater partitioning of above ground N to the seeds. The proportion of xylem sap N in the form of the ureides, allantoln and allantoic acid (allantoate), was only slightly increased by the higher rate of potassium supply. Seed yields were increased by high potassium in the cultivars Venezuela‐350 and Negro Argel. The results suggest that potassium stimulates the transport of nitrogenous compounds to developing fruits.
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Claims 7
Claim · model-written summary
Potassium stimulated nitrogenase activity in Carioca and Negro Argel.
Not reportedComparator
Verbatim
e0“Potassium stimulated nitrogenase activity (acetylene reduction) and the accumulation of ureides in pod walls of Carioca and Negro Argel”
t0“bean”
Claim · model-written summary
Potassium stimulated ureide accumulation in pod walls of Carioca and Negro Argel.
- Taxon
- beant0
- Organ / stage
- pod wallse0
- Treatment
- Potassiume0
- Outcome
- accumulation of ureidese0
- Direction
- stimulatede0
Not reportedComparator
Verbatim
e0“Potassium stimulated nitrogenase activity (acetylene reduction) and the accumulation of ureides in pod walls of Carioca and Negro Argel”
t0“bean”
Claim · model-written summary
Higher potassium increased partitioning of aboveground nitrogen to seeds in three cultivars.
- Taxon
- beant0
- Treatment
- higher level of potassium nutritione0
- Outcome
- partitioning of above ground N to the seedse0
- Direction
- greatere0
Not reportedComparator
Verbatim
e0“In three of the four cultivars the higher level of potassium nutrition resulted in a greater partitioning of above ground N to the seeds”
t0“bean”
Claim · model-written summary
Higher potassium slightly increased the proportion of xylem sap nitrogen as ureides.
- Taxon
- beant0
- Treatment
- higher rate of potassium supplye0
- Outcome
- proportion of xylem sap N in the form of the ureidese0
- Direction
- slightly increasede0
Not reportedComparator
Verbatim
e0“The proportion of xylem sap N in the form of the ureides, allantoln and allantoic acid (allantoate), was only slightly increased by the higher rate of potassium supply”
t0“bean”
Claim · model-written summary
High potassium increased seed yield in Venezuela‐350.
Not reportedComparator
Verbatim
e0“Seed yields were increased by high potassium in the cultivars Venezuela‐350 and Negro Argel”
t0“bean”
Claim · model-written summary
High potassium increased seed yield in Negro Argel.
Not reportedComparator
Verbatim
e0“Seed yields were increased by high potassium in the cultivars Venezuela‐350 and Negro Argel”
t0“bean”
Claim · model-written summary
Potassium may stimulate transport of nitrogenous compounds to developing fruits.
Verbatim
e0“The results suggest that potassium stimulates the transport of nitrogenous compounds to developing fruits”
t0“bean”
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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.