Abstract
The experiment was carried out in order to investigate the effect of fumigation with sulfur dioxide for a long time on grain production of rice plants. Rice plants were fumigated for 10 days at reduction division stage and flowering stage, respectively. The effect of fumigation was examined as to the yield constitutional components, the percentage of germination and the sulfur content in the kernels and leaves. The results obtained were as follows: 1) When rice plant was fumigated with sulfur dioxide in reduction division stage, number of spikelets per panicle and weight of 1, 000 kernels were decreased with increase of SO2 concentration to which the plants were exposed. There were significant effects at concentration of SO2-0.5 and 5 ppm on percentage of ripened grains. 2) When fumigated in the flowering stage, percentage of ripened grains was decreased to some extent with increase of SO2 concentration. Number of panicles per plant decreased slightly. However, the other components were not affected by treatment. 3) In most plot, percentage of germination of seed gained from plant fumigated by SO2 was not affected by treatment. But in the plot fumigated by 5 ppm SO2 at flowering stage, it decreased by 92%, and seminal root of seedling was somewhat translucent. 4) Content of sulfur accumulated in leaves was increased in proportion to exposed SO2 concentration, although that of kernels was not influenced by treatment. These results obtained in this experiment indicate that the sulfur accumulated in leaves were not translocated to kernels.
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Claims 12
Claim · model-written summary
At reduction division, increasing sulfur dioxide decreased spikelets per panicle.
- Taxon
- rice plant
Oryza sativae0 - Organ / stage
- reduction division stagee0
- Treatment
- sulfur dioxidee0
- Outcome
- number of spikelets per paniclee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When rice plant was fumigated with sulfur dioxide in reduction division stage, number of spikelets per panicle and weight of 1, 000 kernels were decreased with increase of SO2 concentration to which the plants were exposed.”
Claim · model-written summary
At reduction division, increasing sulfur dioxide decreased 1,000-kernel weight.
- Taxon
- rice plantOryza sativae0
- Organ / stage
- reduction division stagee0
- Treatment
- sulfur dioxidee0
- Outcome
- weight of 1, 000 kernelse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When rice plant was fumigated with sulfur dioxide in reduction division stage, number of spikelets per panicle and weight of 1, 000 kernels were decreased with increase of SO2 concentration to which the plants were exposed.”
Claim · model-written summary
Sulfur dioxide at 0.5 and 5 ppm significantly affected the percentage of ripened grains.
- Taxon
- rice plantsOryza sativat0
- Treatment
- SO2-0.5 and 5 ppme0
- Outcome
- percentage of ripened grainse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant effects at concentration of SO2-0.5 and 5 ppm on percentage of ripened grains.”
t0“rice plants”
Claim · model-written summary
At flowering, higher sulfur dioxide concentrations reduced the percentage of ripened grains to some extent.
- Taxon
- rice plantsOryza sativat0
- Organ / stage
- flowering stagee0
- Treatment
- SO2e0
- Outcome
- percentage of ripened grainse0
- Direction
- decreasede0
- Qualifier
- to some extente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When fumigated in the flowering stage, percentage of ripened grains was decreased to some extent with increase of SO2 concentration.”
t0“rice plants”
Claim · model-written summary
At flowering, sulfur dioxide slightly reduced panicle number per plant.
- Taxon
- rice plantsOryza sativat0
- Treatment
- sulfur dioxide treatmentt0
- Outcome
- Number of panicles per plante0
- Direction
- decreasede0
- Qualifier
- slightlye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Number of panicles per plant decreased slightly.”
t0“sulfur dioxide treatment for long period on grain production in rice plants”
Claim · model-written summary
Other yield components were unaffected by fumigation at flowering.
- Taxon
- rice plantsOryza sativat0
- Treatment
- sulfur dioxide treatmentt0
- Outcome
- other componentse0
- Direction
- not affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, the other components were not affected by treatment.”
t0“sulfur dioxide treatment for long period on grain production in rice plants”
Claim · model-written summary
Seed germination was unaffected by sulfur dioxide in most plots.
- Taxon
- rice plantsOryza sativat0
- Treatment
- SO2e0
- Outcome
- percentage of germinatione0
- Direction
- not affectede0
- Qualifier
- most plote0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In most plot, percentage of germination of seed gained from plant fumigated by SO2 was not affected by treatment.”
t0“rice plants”
Claim · model-written summary
At flowering, 5 ppm sulfur dioxide reduced germination by 92%.
- Taxon
- rice plantsOryza sativat0
- Organ / stage
- flowering stagee0
- Treatment
- 5 ppm SO2e0
- Outcome
- germinationt1
- Direction
- decreasede0
- Value
- 92%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“But in the plot fumigated by 5 ppm SO2 at flowering stage, it decreased by 92%, and seminal root of seedling was somewhat translucent.”
t0“rice plants”
t1“the percentage of germination and the sulfur content”
Claim · model-written summary
Seedlings from the 5 ppm flowering-stage plot had somewhat translucent seminal roots.
- Taxon
- rice plantsOryza sativat0
- Treatment
- 5 ppm SO2e0
- Outcome
- seminal root of seedling was somewhat translucente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“But in the plot fumigated by 5 ppm SO2 at flowering stage, it decreased by 92%, and seminal root of seedling was somewhat translucent.”
t0“rice plants”
Claim · model-written summary
Leaf sulfur content rose in proportion to sulfur dioxide exposure concentration.
- Taxon
- rice plantsOryza sativat0
- Organ / stage
- leavese0
- Treatment
- SO2e0
- Outcome
- Content of sulfur accumulated in leavese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Content of sulfur accumulated in leaves was increased in proportion to exposed SO2 concentration”
t0“rice plants”
Claim · model-written summary
Kernel sulfur content was not influenced by fumigation.
- Taxon
- rice plantsOryza sativat0
- Organ / stage
- kernelse0
- Treatment
- sulfur dioxide treatmentt0
- Outcome
- sulfur content in the kernelst1
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“although that of kernels was not influenced by treatment.”
t0“sulfur dioxide treatment for long period on grain production in rice plants”
t1“sulfur content in the kernels”
Claim · model-written summary
The authors infer that sulfur accumulated in leaves was not translocated to kernels.
- Taxon
- rice plantsOryza sativat0
- Organ / stage
- leavese0
- Outcome
- sulfur accumulated in leaves were not translocated to kernelse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These results obtained in this experiment indicate that the sulfur accumulated in leaves were not translocated to kernels.”
t0“rice plants”
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pollution · growth · Oryza sativa (rice)Positive and negative results
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See all 10 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.