Abstract
Effects of exogenous silicon on spikelet fertility of hybrid rice were investigated at natural high and normal temperatures during anthesis under field conditions with two hybrids,high-temperature sensitive Jinyou 63and high- temperature tolerant Shanyou 63as material.The exogenous silicon via fertilizer application,in the form of sodium silicon(Na2 SiO3 ·9H2 O),was consecutively spayed for three times at jointing stage at four concentrations,0mmol/L(T-CK),1.25mmol/L(T-1.25),2.50mmol/L(T-2.50),and 3.75mmol/L(T-3.75).Varietal responses in terms of pollination properties,anther dehiscence and spikelet pollination rate were examined to establish a feasible screening scheme of the most appropriate sodium silicate application level in rice management practices.Results showed that, sodium silicate applications at the concentration of 1.25 mmol/L,2.50 mmol/L or 3.75 mmol/L under high temperature in field environments effectively increased the germinated pollen number per stigma by 16.9%and 39.6% for the heat-sensitive Jinyou 63and heat-tolerant Shanyou 63,respectively.The number of pollen grains per stigma increased by 3.4% and 30.5%,respectively.The pollen germination rate rose by 11.3and 7.0percentage points, respectively;the percentage of florets with more than 10germinated pollen grains was increased by 9.3and 27.6 percentage points,respectively;while the percentage of florets with fewer than 20pollen grains was reduced by 18.8 and 8.1percentage points,respectively.Application of the silicon fertilizer also increased anther basal dehiscence width by relative values of 19.0%and 10.3%,respectively,while it improved spikelet pollination rate by absolute values of 10.6and 4.7percentage points in the sensitive and tolerant hybrids,respectively.These results showed that the effect of silicon in alleviating fertility reduction may be mainly attributed to the pollen quality improvement,but not the pollen quantity or the anther dehiscence.Exogenous silicon was more effective for high-temperature sensitive combination than that for the tolerant and the most effective dosage was at the concentration of 2.50mmol/L.
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Claims 17
Claim · model-written summary
Silicate increased germinated pollen per stigma in Jinyou 63 by 16.9%.
- Taxon
- hybrid rice
Oryza sativat0 - Material
- Jinyou 63e0
- Treatment
- sodium silicate applications at the concentration of 1.25 mmol/L,2.50 mmol/L or 3.75 mmol/Le0
- Outcome
- germinated pollen number per stigmae0
- Direction
- increasede0
- Value
- 16.9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sodium silicate applications at the concentration of 1.25 mmol/L,2.50 mmol/L or 3.75 mmol/L under high temperature in field environments effectively increased the germinated pollen number per stigma by 16.9%and 39.6% for the heat-sensitive Jinyou 63and heat-tolerant Shanyou 63,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
Silicate increased germinated pollen per stigma in Shanyou 63 by 39.6%.
- Taxon
- hybrid riceOryza sativat0
- Material
- Shanyou 63e0
- Treatment
- sodium silicate applications at the concentration of 1.25 mmol/L,2.50 mmol/L or 3.75 mmol/Le0
- Outcome
- germinated pollen number per stigmae0
- Direction
- increasede0
- Value
- 39.6%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sodium silicate applications at the concentration of 1.25 mmol/L,2.50 mmol/L or 3.75 mmol/L under high temperature in field environments effectively increased the germinated pollen number per stigma by 16.9%and 39.6% for the heat-sensitive Jinyou 63and heat-tolerant Shanyou 63,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
Silicate increased pollen grains per stigma in Jinyou 63 by 3.4%.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- number of pollen grains per stigmae0
- Direction
- increasede0
- Value
- 3.4%e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of pollen grains per stigma increased by 3.4% and 30.5%,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
Silicate increased pollen grains per stigma in Shanyou 63 by 30.5%.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- number of pollen grains per stigmae0
- Direction
- increasede0
- Value
- 30.5%e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The number of pollen grains per stigma increased by 3.4% and 30.5%,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
Silicate raised pollen germination rate in Jinyou 63 by 11.3 percentage points.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- pollen germination ratee0
- Direction
- rosee0
- Value
- 11.3and 7.0percentage pointse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pollen germination rate rose by 11.3and 7.0percentage points, respectively”
t0“Hybrid Rice”
Claim · model-written summary
Silicate raised pollen germination rate in Shanyou 63 by 7.0 percentage points.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- pollen germination ratee0
- Direction
- rosee0
- Value
- 7.0percentage pointse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The pollen germination rate rose by 11.3and 7.0percentage points, respectively”
t0“Hybrid Rice”
Claim · model-written summary
Silicate increased florets with over 10 germinated pollen grains in Jinyou 63 by 9.3 percentage points.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- percentage of florets with more than 10germinated pollen grainse0
- Direction
- increasede0
- Value
- 9.3and 27.6 percentage pointse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of florets with more than 10germinated pollen grains was increased by 9.3and 27.6 percentage points,respectively”
t0“Hybrid Rice”
Claim · model-written summary
Silicate increased florets with over 10 germinated pollen grains in Shanyou 63 by 27.6 percentage points.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- percentage of florets with more than 10germinated pollen grainse0
- Direction
- increasede0
- Value
- 27.6 percentage pointse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of florets with more than 10germinated pollen grains was increased by 9.3and 27.6 percentage points,respectively”
t0“Hybrid Rice”
Claim · model-written summary
Silicate reduced florets with fewer than 20 pollen grains in Jinyou 63 by 18.8 percentage points.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- percentage of florets with fewer than 20pollen grainse0
- Direction
- reducede0
- Value
- 18.8 and 8.1percentage pointse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of florets with fewer than 20pollen grains was reduced by 18.8 and 8.1percentage points,respectively”
t0“Hybrid Rice”
Claim · model-written summary
Silicate reduced florets with fewer than 20 pollen grains in Shanyou 63 by 8.1 percentage points.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- percentage of florets with fewer than 20pollen grainse0
- Direction
- reducede0
- Value
- 8.1percentage pointse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of florets with fewer than 20pollen grains was reduced by 18.8 and 8.1percentage points,respectively”
t0“Hybrid Rice”
Claim · model-written summary
Silicate increased anther basal dehiscence width in Jinyou 63 by 19.0%.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- silicon fertilizere0
- Outcome
- anther basal dehiscence widthe0
- Direction
- increasede0
- Value
- 19.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of the silicon fertilizer also increased anther basal dehiscence width by relative values of 19.0%and 10.3%,respectively”
t0“Hybrid Rice”
Claim · model-written summary
Silicate increased anther basal dehiscence width in Shanyou 63 by 10.3%.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- silicon fertilizere0
- Outcome
- anther basal dehiscence widthe0
- Direction
- increasede0
- Value
- 10.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of the silicon fertilizer also increased anther basal dehiscence width by relative values of 19.0%and 10.3%,respectively”
t0“Hybrid Rice”
Claim · model-written summary
Silicate improved spikelet pollination in Jinyou 63 by 10.6 percentage points.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- spikelet pollination ratee0
- Direction
- improvede0
- Value
- 10.6and 4.7percentage pointse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it improved spikelet pollination rate by absolute values of 10.6and 4.7percentage points in the sensitive and tolerant hybrids,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
Silicate improved spikelet pollination in Shanyou 63 by 4.7 percentage points.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- spikelet pollination ratee0
- Direction
- improvede0
- Value
- 4.7percentage pointse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it improved spikelet pollination rate by absolute values of 10.6and 4.7percentage points in the sensitive and tolerant hybrids,respectively.”
t0“Hybrid Rice”
Claim · model-written summary
The authors attribute fertility protection mainly to pollen quality improvement.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- alleviating fertility reductione0
- Qualifier
- pollen quality improvemente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effect of silicon in alleviating fertility reduction may be mainly attributed to the pollen quality improvement,but not the pollen quantity or the anther dehiscence.”
t0“Hybrid Rice”
Claim · model-written summary
Silicon was more effective for heat-sensitive than heat-tolerant rice.
- Taxon
- hybrid riceOryza sativat0
- Treatment
- Exogenous silicone0
- Outcome
- more effectivee0
- Direction
- more effectivee0
- Comparator
- the tolerante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Exogenous silicon was more effective for high-temperature sensitive combination than that for the tolerant”
t0“Hybrid Rice”
Claim · model-written summary
The most effective silicon concentration was 2.50mmol/L.
- Taxon
- hybrid riceOryza sativat0
- Outcome
- most effective dosagee0
- Value
- 2.50mmol/Le0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the most effective dosage was at the concentration of 2.50mmol/L.”
t0“Hybrid Rice”
The same questions in other papers
sodium silicate · growth · Oryza sativa (rice)Positive and negative results
4 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
2 papers more in this group
See all 6 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.