Abstract
High P-efficiency (IS-22-30, IS-22-25) and low P-efficiency (IS-07-07) wild barley cultivars were chosen to evaluate characteristics of phosphorus uptake and utilization, and properties of phosphorus fractions in rhizosphere and non-rhizosphere in a pot experiment with 0 (CK) and 30 mg P · kg(-1) supplied as only Pi (KH2PO4), only Po (phytate) or Pi + Po (KH2PO4+ phytate). The results showed that dry matter and phosphorus accumulation of wild barley in the different treatments was ranked as Pi > Pi + Po > Po > CK. In addition, dry matter yield and phosphorus uptake of wild barley with high P-efficiency exhibited significantly greater than that with low P-efficiency. The concentration of soil available phosphorus was significantly different after application of different phosphorus sources, which was presented as Pi > Pi + Po > Po. The concentration of soil available phosphorus in high P-efficiency wild barley was significantly higher than that of low P-efficiency in the rhizosphere soil. There was a deficit in rhizosphere available phosphorus of high P-efficiency wild barley, especially in Pi and Pi+Po treatments. The inorganic phosphorus fractions increased with the increasing Pi treatment, and the concentrations of inorganic phosphorus fractions in soil were sorted as follows: Ca10-P > O-P > Fe-P > Al-P > Ca2-P > Ca8-P. The contents of Ca2-P and Ca8-P for high P-efficiency wild barley showed deficits in rhizosphere soil under each phosphorus source treatment. In addition, enrichment of Al-P and Fe-P was observed in Pi treatment in rhizosphere soil. The concentrations of organic phosphorus fractions in soil were sorted as follows: moderate labile organic phosphorus > moderate resistant, resistant organic phosphorus > labile organic phosphorus. The labile and moderate labile organic phosphorus enriched in rhizosphere soil and the greatest enrichment appeared in Pi treatment. Furthermore, the concentrations of moderate resistant organic phosphorus and resistant organic phosphorus decreased in rhizosphere soil. The concentrations of labile and moderate labile organic phosphorus in rhizosphere soil of high P-efficiency wild barley were significantly higher than that of low P-efficiency wild barley in each phosphorus source treatment. However, moderate resistant organic phosphorus and resistant organic phosphorus concentrations had no significant difference between the two genotypes. Wild barley with high P-efficiency demonstrated a greater ability of mobilization and uptake Ca2-P, Ca8-P, Al-P and labile organic phosphorus than that with low P-efficiency under Pi deficiency.
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Claims 17
Claim · model-written summary
Dry matter accumulation ranked Pi > Pi + Po > Po > CK.
- Taxon
- wild barley
.jpg?width=60)
Hordeum vulgare subsp. spontaneume0 - Treatment
- different treatmentse0
- Outcome
- dry mattere0
- Direction
- Pi > Pi + Po > Po > CKe0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“dry matter and phosphorus accumulation of wild barley in the different treatments was ranked as Pi > Pi + Po > Po > CK”
Claim · model-written summary
Phosphorus accumulation ranked Pi > Pi + Po > Po > CK.
- Taxon
- wild barleyHordeum vulgare subsp. spontaneume0
- Treatment
- different treatmentse0
- Outcome
- phosphorus accumulatione0
- Direction
- Pi > Pi + Po > Po > CKe0
- Comparator
- CKe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry matter and phosphorus accumulation of wild barley in the different treatments was ranked as Pi > Pi + Po > Po > CK”
Claim · model-written summary
High-efficiency barley had greater dry matter yield than low-efficiency barley.
- Taxon
- wild barleyHordeum vulgare subsp. spontaneume0
- Material
- high P-efficiencye0
- Outcome
- dry matter yielde0
- Direction
- greatere0
- Comparator
- low P-efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry matter yield and phosphorus uptake of wild barley with high P-efficiency exhibited significantly greater than that with low P-efficiency”
Claim · model-written summary
High-efficiency barley had greater phosphorus uptake than low-efficiency barley.
- Taxon
- wild barleyHordeum vulgare subsp. spontaneume0
- Material
- high P-efficiencye0
- Outcome
- phosphorus uptakee0
- Direction
- greatere0
- Comparator
- low P-efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry matter yield and phosphorus uptake of wild barley with high P-efficiency exhibited significantly greater than that with low P-efficiency”
Claim · model-written summary
Soil available phosphorus ranked Pi > Pi + Po > Po.
- Treatment
- different phosphorus sourcese0
- Outcome
- soil available phosphoruse0
- Direction
- Pi > Pi + Po > Poe0
- Comparator
- Poe0
Not reportedTaxon
Verbatim
e0“The concentration of soil available phosphorus was significantly different after application of different phosphorus sources, which was presented as Pi > Pi + Po > Po”
Claim · model-written summary
Rhizosphere available phosphorus was higher in high-efficiency barley than low-efficiency barley.
- Taxon
- wild barleyHordeum vulgare subsp. spontaneume0
- Material
- high P-efficiencye0
- Outcome
- soil available phosphoruse0
- Direction
- highere0
- Comparator
- low P-efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentration of soil available phosphorus in high P-efficiency wild barley was significantly higher than that of low P-efficiency in the rhizosphere soil”
Claim · model-written summary
Available phosphorus was deficient in the rhizosphere of high-efficiency barley, especially with Pi and Pi+Po.
- Taxon
- wild barleyHordeum vulgare subsp. spontaneume0
- Material
- high P-efficiencye0
- Outcome
- rhizosphere available phosphoruse0
- Direction
- deficite0
- Qualifier
- especially in Pi and Pi+Po treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a deficit in rhizosphere available phosphorus of high P-efficiency wild barley, especially in Pi and Pi+Po treatments”
Claim · model-written summary
Soil inorganic phosphorus fractions rose with increasing Pi treatment.
Not reportedTaxon
Verbatim
e0“The inorganic phosphorus fractions increased with the increasing Pi treatment”
Claim · model-written summary
Inorganic soil phosphorus fractions ranked Ca10-P > O-P > Fe-P > Al-P > Ca2-P > Ca8-P.
- Outcome
- concentrations of inorganic phosphorus fractions in soile0
- Direction
- Ca10-P > O-P > Fe-P > Al-P > Ca2-P > Ca8-Pe0
Not reportedTaxon
Verbatim
e0“the concentrations of inorganic phosphorus fractions in soil were sorted as follows: Ca10-P > O-P > Fe-P > Al-P > Ca2-P > Ca8-P”
Claim · model-written summary
Ca2-P and Ca8-P were deficient in high-efficiency barley rhizosphere soil under every phosphorus source.
- Taxon
- wild barleyHordeum vulgare subsp. spontaneume0
- Material
- high P-efficiencye0
- Outcome
- contents of Ca2-P and Ca8-Pe0
- Direction
- deficitse0
- Qualifier
- under each phosphorus source treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The contents of Ca2-P and Ca8-P for high P-efficiency wild barley showed deficits in rhizosphere soil under each phosphorus source treatment”
Claim · model-written summary
Al-P and Fe-P were enriched in rhizosphere soil with Pi treatment.
Not reportedTaxonComparator
Verbatim
e0“enrichment of Al-P and Fe-P was observed in Pi treatment in rhizosphere soil”
Claim · model-written summary
Soil organic phosphorus fractions ranked moderate labile > moderate resistant and resistant > labile.
- Outcome
- concentrations of organic phosphorus fractions in soile0
- Direction
- moderate labile organic phosphorus > moderate resistant, resistant organic phosphorus > labile organic phosphoruse0
Not reportedTaxon
Verbatim
e0“The concentrations of organic phosphorus fractions in soil were sorted as follows: moderate labile organic phosphorus > moderate resistant, resistant organic phosphorus > labile organic phosphorus”
Claim · model-written summary
Labile and moderate labile organic phosphorus were enriched in rhizosphere soil, greatest with Pi.
- Outcome
- labile and moderate labile organic phosphoruse0
- Direction
- enrichede0
- Qualifier
- greatest enrichment appeared in Pi treatmente0
Not reportedTaxon
Verbatim
e0“The labile and moderate labile organic phosphorus enriched in rhizosphere soil and the greatest enrichment appeared in Pi treatment”
Claim · model-written summary
Moderate resistant and resistant organic phosphorus decreased in rhizosphere soil.
- Outcome
- concentrations of moderate resistant organic phosphorus and resistant organic phosphoruse0
- Direction
- decreasede0
Not reportedTaxon
Verbatim
e0“the concentrations of moderate resistant organic phosphorus and resistant organic phosphorus decreased in rhizosphere soil”
Claim · model-written summary
High-efficiency barley had higher rhizosphere labile and moderate labile organic phosphorus than low-efficiency barley.
- Taxon
- wild barleyHordeum vulgare subsp. spontaneume0
- Material
- high P-efficiencye0
- Outcome
- concentrations of labile and moderate labile organic phosphoruse0
- Direction
- highere0
- Comparator
- low P-efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concentrations of labile and moderate labile organic phosphorus in rhizosphere soil of high P-efficiency wild barley were significantly higher than that of low P-efficiency wild barley in each phosphorus source treatment”
Claim · model-written summary
Moderate resistant and resistant organic phosphorus did not significantly differ between genotypes.
- Taxon
- wild barleyHordeum vulgare subsp. spontaneumt0
- Material
- two genotypese0
- Outcome
- moderate resistant organic phosphorus and resistant organic phosphorus concentrationse0
- Direction
- no significant differencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“moderate resistant organic phosphorus and resistant organic phosphorus concentrations had no significant difference between the two genotypes”
t0“wild barley”
Claim · model-written summary
High-efficiency barley mobilized and took up Ca2-P, Ca8-P, Al-P and labile organic phosphorus more than low-efficiency barley under Pi deficiency.
- Taxon
- Wild barleyHordeum vulgare subsp. spontaneume0
- Material
- high P-efficiencye0
- Outcome
- mobilization and uptake Ca2-P, Ca8-P, Al-P and labile organic phosphoruse0
- Direction
- greatere0
- Qualifier
- under Pi deficiencye0
- Comparator
- low P-efficiencye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Wild barley with high P-efficiency demonstrated a greater ability of mobilization and uptake Ca2-P, Ca8-P, Al-P and labile organic phosphorus than that with low P-efficiency under Pi deficiency”