Abstract
Rice plants (Oryza sativa L. cv. Akebono) were cultured in Kimura B solution. The effect of silicon on plant growth and the characteristics of the uptake and distribution of silicon at different growth stages were studied from both aspects: the addition and removal of silicon during the vegetative, reproductive and ripening stages. When silicon was removed during the reproductive stage, the dry weights of straw (stem+leaf blade) and grain decreased by 20 and 50% respectively, compared with those of the plants cultured in the solution with silicon throughout the growth period. Conversely, when silicon was added during the reproductive stage, the dry weights of straw and grain increased by 243 and 30%, respectively, over those of the plants cultured in a solution devoid of silicon throughout the growth period. The effect of silicon on the dry weights of straw and grain was small when silicon was either added or removed during the vegetative and ripening stages. The percentage of filled spikelets remarkably increased or decreased when silicon was added or removed during the reproductive stage. The 1,000-grain weight was hardly influenced by the addition or removal of silicon regardless of the growth stage. About 66% of silicon in the whole plant and 70 to 75% of silicon in the leaf blades were absorbed during the reproductive stage. About 75% of silicon in the panicle was absorbed during the ripening stage although no beneficial effect was detected in this experiment. Forty to 50% of the silicon absorbed during the vegetative and reproductive stages was present in the leaf blades, whereas only 20 to 30% of silicon absorbed during the ripening stage was present in the leaf blades. Based on these results, it is concluded that the supply of silicon during the reproductive stage is most important for plant growth.
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Claims 14
Claim · model-written summary
Removing silicon during reproduction decreased straw dry weight by 20%.
- Taxon
- Rice
Oryza sativae1 - Material
- Akebonoe1
- Treatment
- silicon was removed during the reproductive stagee0
- Outcome
- dry weights of strawe0
- Direction
- decreasede0
- Value
- 20e0
- Comparator
- solution with silicon throughout the growth periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When silicon was removed during the reproductive stage, the dry weights of straw (stem+leaf blade) and grain decreased by 20 and 50% respectively, compared with those of the plants cultured in the solution with silicon throughout the growth period.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
Removing silicon during reproduction decreased grain dry weight by 50%.
- Taxon
- RiceOryza sativae1
- Material
- Akebonoe1
- Treatment
- silicon was removed during the reproductive stagee0
- Outcome
- graine0
- Direction
- decreasede0
- Value
- 50%e0
- Comparator
- solution with silicon throughout the growth periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When silicon was removed during the reproductive stage, the dry weights of straw (stem+leaf blade) and grain decreased by 20 and 50% respectively, compared with those of the plants cultured in the solution with silicon throughout the growth period.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
Adding silicon during reproduction increased straw dry weight by 243%.
- Taxon
- RiceOryza sativae1
- Treatment
- silicon was added during the reproductive stagee0
- Outcome
- dry weights of strawe0
- Direction
- increasede0
- Value
- 243e0
- Comparator
- solution devoid of silicon throughout the growth periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when silicon was added during the reproductive stage, the dry weights of straw and grain increased by 243 and 30%, respectively, over those of the plants cultured in a solution devoid of silicon throughout the growth period.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
Adding silicon during reproduction increased grain dry weight by 30%.
- Taxon
- RiceOryza sativae1
- Treatment
- silicon was added during the reproductive stagee0
- Outcome
- graine0
- Direction
- increasede0
- Value
- 30%e0
- Comparator
- solution devoid of silicon throughout the growth periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“when silicon was added during the reproductive stage, the dry weights of straw and grain increased by 243 and 30%, respectively, over those of the plants cultured in a solution devoid of silicon throughout the growth period.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
Adding or removing silicon during vegetative or ripening stages had little effect on straw and grain dry weight.
- Taxon
- RiceOryza sativae1
- Treatment
- silicon was either added or removed during the vegetative and ripening stagese0
- Outcome
- dry weights of straw and graine0
- Direction
- smalle0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effect of silicon on the dry weights of straw and grain was small when silicon was either added or removed during the vegetative and ripening stages.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
Adding silicon in reproduction markedly increased filled spikelets.
- Taxon
- RiceOryza sativae1
- Treatment
- silicon was addede0
- Outcome
- percentage of filled spikeletse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of filled spikelets remarkably increased or decreased when silicon was added or removed during the reproductive stage.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
Removing silicon in reproduction markedly decreased filled spikelets.
- Taxon
- RiceOryza sativae1
- Treatment
- silicon was added or removed during the reproductive stagee0
- Outcome
- percentage of filled spikeletse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The percentage of filled spikelets remarkably increased or decreased when silicon was added or removed during the reproductive stage.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
Silicon addition or removal had little influence on thousand grain weight at any stage.
- Taxon
- RiceOryza sativae1
- Treatment
- addition or removal of silicone0
- Outcome
- 1,000-grain weighte0
- Direction
- hardly influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The 1,000-grain weight was hardly influenced by the addition or removal of silicon regardless of the growth stage.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
About 66% of whole-plant silicon was absorbed during reproduction.
- Taxon
- RiceOryza sativae1
- Organ / stage
- whole plante0
- Outcome
- silicon in the whole plante0
- Value
- 66%e0
- Qualifier
- during the reproductive stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“About 66% of silicon in the whole plant and 70 to 75% of silicon in the leaf blades were absorbed during the reproductive stage.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
About 70 to 75% of leaf-blade silicon was absorbed during reproduction.
- Taxon
- RiceOryza sativae1
- Organ / stage
- leaf bladese0
- Outcome
- silicon in the leaf bladese0
- Value
- 70 to 75%e0
- Qualifier
- during the reproductive stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“About 66% of silicon in the whole plant and 70 to 75% of silicon in the leaf blades were absorbed during the reproductive stage.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
About 75% of panicle silicon was absorbed during ripening, with no detected growth benefit.
- Taxon
- RiceOryza sativae1
- Organ / stage
- paniclee0
- Outcome
- silicon in the paniclee0
- Value
- 75%e0
- Qualifier
- no beneficial effect was detectede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“About 75% of silicon in the panicle was absorbed during the ripening stage although no beneficial effect was detected in this experiment.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
Forty to 50% of silicon absorbed in vegetative and reproductive stages was present in leaf blades.
- Taxon
- RiceOryza sativae1
- Organ / stage
- leaf bladese0
- Outcome
- silicon absorbede0
- Value
- Forty to 50%e0
- Qualifier
- during the vegetative and reproductive stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Forty to 50% of the silicon absorbed during the vegetative and reproductive stages was present in the leaf blades”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
Twenty to 30% of silicon absorbed during ripening was present in leaf blades.
- Taxon
- RiceOryza sativae1
- Organ / stage
- leaf bladese0
- Outcome
- silicon absorbede0
- Value
- 20 to 30%e0
- Qualifier
- during the ripening stagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only 20 to 30% of silicon absorbed during the ripening stage was present in the leaf blades”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
Claim · model-written summary
The authors concluded that silicon supply during reproduction is most important for rice growth.
- Taxon
- RiceOryza sativae1
- Outcome
- supply of silicon during the reproductive stagee0
- Direction
- most importante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the supply of silicon during the reproductive stage is most important for plant growth.”
e1“Rice plants (Oryza sativa L. cv. Akebono)”
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See all 218 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.