Abstract
Abstract An experiment was conducted in the greenhouse to evaluate the effects of seed phosphorus (P) concentration on growth, nodulation, and nitrogen (N) and P accumulation of three common bean (Phaseolus vulgaris L.) cultivars. Seeds were produced under low or high soil P levels, and soaked, or not, in 200 mM KH2PO4 solution. The experiment had a 3×3×2×2 factorial block design: three cultivars (ICA Col 10103, Carioca and Honduras 35), three levels of applied P (15, 30 and 45 mg P kg−1 soil), two native seed P concentrations, and two seed soaking treatments. Plants were harvested at flowering. Soaked seeds increased the number, dry mass and P content of nodules, but did not affect plant growth. Plants originated from seeds with high native P concentration presented higher shoot dry mass and nodule number and mass at every soil P level, and were less responsive to increased soil P supply, than plants from low seed P. In plants from seeds with high P, soil P levels did not alter significantly root dry mass, while in plants from seeds with low P bean cultivars expressed wider differences in root dry mass. The genotypic variability of nodulation was influenced by soil P levels and seed P concentration. Both higher soil or seed P supply enhanced N and P accumulation in shoots. These results indicate that a high seed P concentration produces plants less dependent on soil P supply, and can enhance nodulation and N2 fixation of common bean. Seed P supply affected the cultivar performance, and should be considered in evaluation of bean genotypes.
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Claims 12
Claim · model-written summary
Seed soaking increased nodule number, mass and P content.
- Taxon
- common bean
Phaseolus vulgarist0 - Treatment
- Soaked seedse0
- Outcome
- number, dry mass and P content of nodulese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soaked seeds increased the number, dry mass and P content of nodules, but did not affect plant growth.”
t0“common bean”
Claim · model-written summary
Seed soaking did not affect plant growth.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- Soaked seedse0
- Outcome
- plant growthe0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soaked seeds increased the number, dry mass and P content of nodules, but did not affect plant growth.”
t0“common bean”
Claim · model-written summary
High native seed P increased shoot dry mass relative to low seed P.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- seeds with high native P concentratione0
- Outcome
- shoot dry masse0
- Direction
- highere0
- Comparator
- low seed Pe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants originated from seeds with high native P concentration presented higher shoot dry mass and nodule number and mass at every soil P level, and were less responsive to increased soil P supply, than plants from low seed P.”
t0“common bean”
Claim · model-written summary
High native seed P increased nodule number and mass.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- seeds with high native P concentratione0
- Outcome
- nodule number and masse0
- Direction
- highere0
- Comparator
- low seed Pe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants originated from seeds with high native P concentration presented higher shoot dry mass and nodule number and mass at every soil P level, and were less responsive to increased soil P supply, than plants from low seed P.”
t0“common bean”
Claim · model-written summary
High seed P plants responded less to increased soil P supply.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- seeds with high native P concentratione0
- Outcome
- responsive to increased soil P supplye0
- Direction
- less responsivee0
- Comparator
- low seed Pe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants originated from seeds with high native P concentration presented higher shoot dry mass and nodule number and mass at every soil P level, and were less responsive to increased soil P supply, than plants from low seed P.”
t0“common bean”
Claim · model-written summary
Soil P did not significantly alter root mass in high seed P plants.
- Taxon
- common beanPhaseolus vulgarist0
- Material
- seeds with high Pe0
- Treatment
- soil P levelse0
- Outcome
- root dry masse0
- Direction
- did not altere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In plants from seeds with high P, soil P levels did not alter significantly root dry mass, while in plants from seeds with low P bean cultivars expressed wider differences in root dry mass.”
t0“common bean”
Claim · model-written summary
Low seed P plants showed wider root mass differences among cultivars.
- Taxon
- common beanPhaseolus vulgarist0
- Material
- bean cultivarse0
- Treatment
- seeds with low Pe0
- Outcome
- root dry masse0
- Direction
- wider differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In plants from seeds with high P, soil P levels did not alter significantly root dry mass, while in plants from seeds with low P bean cultivars expressed wider differences in root dry mass.”
t0“common bean”
Claim · model-written summary
Soil and seed P influenced genotypic variation in nodulation.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- soil P levels and seed P concentratione0
- Outcome
- genotypic variability of nodulatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The genotypic variability of nodulation was influenced by soil P levels and seed P concentration.”
t0“common bean”
Claim · model-written summary
Higher soil P increased shoot N and P accumulation.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- higher soile0
- Outcome
- N and P accumulation in shootse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both higher soil or seed P supply enhanced N and P accumulation in shoots.”
t0“common bean”
Claim · model-written summary
Higher seed P increased shoot N and P accumulation.
- Taxon
- common beanPhaseolus vulgarist0
- Treatment
- seed P supplye0
- Outcome
- N and P accumulation in shootse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both higher soil or seed P supply enhanced N and P accumulation in shoots.”
t0“common bean”
Claim · model-written summary
High seed P can enhance nodulation and nitrogen fixation.
- Taxon
- common beanPhaseolus vulgarise0
- Treatment
- high seed P concentratione0
- Outcome
- nodulation and N2 fixatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results indicate that a high seed P concentration produces plants less dependent on soil P supply, and can enhance nodulation and N2 fixation of common bean.”
Claim · model-written summary
Seed P supply should be considered when evaluating bean genotypes.
Verbatim
e0“Seed P supply affected the cultivar performance, and should be considered in evaluation of bean genotypes.”
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See all 76 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.