Abstract
Understanding turfgrass response to silicon (Si) application under salinity conditions is important to find a way to improve turfgrass salt tolerance for turf management. The objective of the study was to investigate effects of increasing amendment concentrations of Na 2 SiO 3 on turf growth and distribution of Na + and K + in seedlings of kentucky bluegrass (KBG) ( Poa pratensis L.) under salinity stress. This growth chamber experiment was consisted of a control (no salinity and no Si) and five Si amendment treatments (0, 0.24, 0.48, 0.72, and 0.96 g Si/kg saline soil) under 10 g·kg −1 salinity conditions. Seed germination rate was significantly increased after 12 d under 0.48 g·kg −1 Si treatment. Plant height and canopy coverage were increased under 0.72 g·kg −1 Si treatment after 40 and 44 d of treatment, respectively, and tiller number was increased under 0.96 g·kg −1 Si treatment compared with 0 Si under saline conditions. With the supplement of Si at 0.48 to 0.96 g·kg −1 , the ratio of Na + /K + in shoots was decreased and individual leaf area was increased compared with 0 Si under saline conditions. The increase in individual leaf area was mainly the result of the increase in the leaf blade length. The concentration of K + in shoots was significantly increased, whereas the concentrations of Na + in roots were significantly decreased under all Si amendment treatments. The content of K + was higher in shoots than in roots, but the ratio of Na + /K + in roots was higher than in shoots in all Si amendment treatments. The results indicate that under saline conditions, Si induced the transfer of K + from roots to shoots but inhibited the absorption and transfer of Na + , which may contribute to better turf quality and growth with Si treatment under saline conditions.
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Claims 11
Claim · model-written summary
Si at 0.48 g·kg −1 significantly increased seed germination rate of Poa pratensis under salinity after 12 d.
- Taxon
- Poa pratensis
.jpg?width=60)
Poa pratensist0 - Treatment
- 0.48 g·kg −1 Si treatmente1
- Outcome
- Seed germination ratee1
- Direction
- increasede1
- Qualifier
- after 12 de1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e1“Seed germination rate was significantly increased after 12 d under 0.48 g·kg −1 Si treatment”
Claim · model-written summary
Si at 0.72 g·kg −1 increased plant height and canopy coverage of Poa pratensis under salinity.
- Taxon
- Poa pratensisPoa pratensist0
- Treatment
- 0.72 g·kg −1 Si treatmente2
- Outcome
- Plant height and canopy coveragee2
- Direction
- increasede2
- Qualifier
- after 40 and 44 de2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e2“Plant height and canopy coverage were increased under 0.72 g·kg −1 Si treatment after 40 and 44 d of treatment”
Claim · model-written summary
Si at 0.96 g·kg −1 increased tiller number of Poa pratensis under salinity compared with 0 Si.
- Taxon
- Poa pratensisPoa pratensist0
- Treatment
- 0.96 g·kg −1 Si treatmente3
- Outcome
- tiller numbere3
- Direction
- increasede3
- Comparator
- 0 Sie3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e3“tiller number was increased under 0.96 g·kg −1 Si treatment compared with 0 Si under saline conditions”
Claim · model-written summary
Si at 0.48 to 0.96 g·kg −1 decreased the shoot Na+/K+ ratio of Poa pratensis compared with 0 Si under salinity.
- Taxon
- Poa pratensisPoa pratensist0
- Treatment
- supplement of Si at 0.48 to 0.96 g·kg −1e4
- Outcome
- ratio of Na + /K + in shootse4
- Direction
- decreasede4
- Comparator
- 0 Sie4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e4“With the supplement of Si at 0.48 to 0.96 g·kg −1 , the ratio of Na + /K + in shoots was decreased and individual leaf area was increased compared with 0 Si under saline conditions”
Claim · model-written summary
Si at 0.48 to 0.96 g·kg −1 increased individual leaf area of Poa pratensis compared with 0 Si under salinity.
- Taxon
- Poa pratensisPoa pratensist0
- Treatment
- supplement of Si at 0.48 to 0.96 g·kg −1e4
- Outcome
- individual leaf areae4
- Direction
- increasede4
- Comparator
- 0 Sie4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e4“With the supplement of Si at 0.48 to 0.96 g·kg −1 , the ratio of Na + /K + in shoots was decreased and individual leaf area was increased compared with 0 Si under saline conditions”
Claim · model-written summary
The increase in individual leaf area of Poa pratensis was mainly due to longer leaf blades (authors interpretation).
- Taxon
- Poa pratensisPoa pratensist0
- Outcome
- individual leaf areae5
- Qualifier
- leaf blade lengthe5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e5“The increase in individual leaf area was mainly the result of the increase in the leaf blade length”
Claim · model-written summary
Shoot K+ concentration of Poa pratensis was significantly increased under all Si treatments.
- Taxon
- Poa pratensisPoa pratensist0
- Treatment
- Si amendment treatmentse7
- Outcome
- concentration of K + in shootse6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e6“The concentration of K + in shoots was significantly increased”
e7“whereas the concentrations of Na + in roots were significantly decreased under all Si amendment treatments”
Claim · model-written summary
Root Na+ concentration of Poa pratensis was significantly decreased under all Si treatments.
- Taxon
- Poa pratensisPoa pratensist0
- Treatment
- Si amendment treatmentse7
- Outcome
- concentrations of Na + in rootse7
- Direction
- decreasede7
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e7“whereas the concentrations of Na + in roots were significantly decreased under all Si amendment treatments”
Claim · model-written summary
Shoot K+ content of Poa pratensis was higher than root K+ content.
- Taxon
- Poa pratensisPoa pratensist0
- Organ / stage
- shootse0
- Outcome
- content of K +e0
- Direction
- highere0
- Comparator
- rootse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e0“The content of K + was higher in shoots than in roots”
Claim · model-written summary
The root Na+/K+ ratio of Poa pratensis was higher than the shoot ratio in all Si treatments.
- Taxon
- Poa pratensisPoa pratensist0
- Treatment
- all Si amendment treatmentse1
- Outcome
- ratio of Na + /K + in rootse1
- Direction
- highere1
- Comparator
- shootse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e1“the ratio of Na + /K + in roots was higher than in shoots in all Si amendment treatments”
Claim · model-written summary
Si induced K+ transfer from roots to shoots of Poa pratensis under salinity but inhibited Na+ absorption and transfer (authors interpretation).
- Taxon
- Poa pratensisPoa pratensist0
- Treatment
- Sie2
- Outcome
- transfer of K +e2
- Qualifier
- inhibited the absorption and transfer of Na +e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Silicon Effects on Poa pratensis Responses to Salinity”
e2“Si induced the transfer of K + from roots to shoots but inhibited the absorption and transfer of Na +”
The same questions in other papers
silicon atom · molecular: metabolites · Poa pratensis (Kentucky bluegrass)Results agree
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- positive
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3 papers more in this group
See all 7 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.