Abstract
Sufficient supply of high quality planting materials is vital for a successful rice production. Pre-anthesis drought stress significantly reduces yield components of the lowland cultivated rice hence scientific information on its effect on seed quality is still very much lacking. This study was conducted to compare the effects of pre-anthesis drought stress on yield components and seed quality of two rice genotypes, a drought tolerant Moroberekan (V1), and local drought susceptible MR297 (V2). Three durations of drought stress used in this study were well-watered condition (S1), five days stress duration (S2), and ten days stress duration (S3). Complete (100%) spikelet sterility was observed for MR297 as compared with Moroberekan (31%) under S3. The seed germination rate of Moroberekan was significantly lower (p<0.05) under S1 (48%) as compared with S2 (80%) and S3 (70%). However, embryo of the non-germinated seeds of Moroberekan were still alive based on tetrazolium test thus indicated that the seeds were still viable yet dormant. In contrast, seed germination rate of MR297 was not affected by pre-anthesis drought stress (88% for S1 compared to 93% for S2). Therefore, seeds of MR297 produced under pre-anthesis drought stressed condition could be safely distributed in rice seeds supply chain.
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Claims 8
Claim · model-written summary
Pre-anthesis drought stress significantly reduced yield components of lowland rice
- Taxon
- rice
Oryza sativae1 - Treatment
- Pre-anthesis drought stresse1
- Outcome
- yield componentse1
- Direction
- reducese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pre-anthesis drought stress significantly reduces yield components of the lowland cultivated rice”
Claim · model-written summary
MR297 had complete spikelet sterility under the ten-day drought stress, compared with 31% for Moroberekan
- Taxon
- riceOryza sativae1
- Material
- MR297e7
- Treatment
- ten days stress duratione2
- Outcome
- spikelet sterilitye7
- Value
- 100%e7
- Qualifier
- 31%e7
- Comparator
- Moroberekane7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pre-anthesis drought stress significantly reduces yield components of the lowland cultivated rice”
e2“ten days stress duration (S3)”
e7“Complete (100%) spikelet sterility was observed for MR297 as compared with Moroberekan (31%) under S3”
Claim · model-written summary
Moroberekan germination rate under well-watered condition was significantly lower than under five days of drought stress
- Taxon
- riceOryza sativae1
- Material
- Moroberekane3
- Treatment
- well-watered conditione2
- Outcome
- seed germination ratee3
- Direction
- significantly lowere3
- Value
- 48%e3
- Qualifier
- 80%e3
- Comparator
- five days stress duratione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pre-anthesis drought stress significantly reduces yield components of the lowland cultivated rice”
e2“Three durations of drought stress used in this study were well-watered condition (S1), five days stress duration (S2), and ten days stress duration (S3)”
e3“The seed germination rate of Moroberekan was significantly lower (p<0.05) under S1 (48%) as compared with S2 (80%) and S3 (70%)”
Claim · model-written summary
Moroberekan germination rate under well-watered condition was significantly lower than under ten days of drought stress
- Taxon
- riceOryza sativae1
- Material
- Moroberekane3
- Treatment
- well-watered conditione2
- Outcome
- seed germination ratee3
- Direction
- significantly lowere3
- Value
- 48%e3
- Qualifier
- 70%e3
- Comparator
- ten days stress duratione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pre-anthesis drought stress significantly reduces yield components of the lowland cultivated rice”
e2“Three durations of drought stress used in this study were well-watered condition (S1), five days stress duration (S2), and ten days stress duration (S3)”
e3“The seed germination rate of Moroberekan was significantly lower (p<0.05) under S1 (48%) as compared with S2 (80%) and S3 (70%)”
Claim · model-written summary
Embryos of non-germinated Moroberekan seeds were still alive by tetrazolium test
- Taxon
- riceOryza sativae1
- Material
- Moroberekane4
- Organ / stage
- embryoe4
- Outcome
- embryo of the non-germinated seedse4
- Direction
- still alivee4
- Qualifier
- based on tetrazolium teste4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pre-anthesis drought stress significantly reduces yield components of the lowland cultivated rice”
e4“However, embryo of the non-germinated seeds of Moroberekan were still alive based on tetrazolium test thus indicated that the seeds were still viable yet dormant”
Claim · model-written summary
Non-germinated Moroberekan seeds were viable yet dormant
- Taxon
- riceOryza sativae1
- Material
- Moroberekane4
- Outcome
- viable yet dormante4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pre-anthesis drought stress significantly reduces yield components of the lowland cultivated rice”
e4“However, embryo of the non-germinated seeds of Moroberekan were still alive based on tetrazolium test thus indicated that the seeds were still viable yet dormant”
Claim · model-written summary
Germination rate of MR297 was not affected by pre-anthesis drought stress
- Taxon
- riceOryza sativae1
- Material
- MR297e5
- Treatment
- pre-anthesis drought stresse5
- Outcome
- seed germination ratee5
- Direction
- not affectede5
- Value
- 88%e5
- Qualifier
- 93%e5
- Comparator
- well-watered conditione2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Pre-anthesis drought stress significantly reduces yield components of the lowland cultivated rice”
e2“Three durations of drought stress used in this study were well-watered condition (S1), five days stress duration (S2), and ten days stress duration (S3)”
e5“seed germination rate of MR297 was not affected by pre-anthesis drought stress (88% for S1 compared to 93% for S2)”
Claim · model-written summary
Seeds of MR297 produced under drought stress could be safely distributed in the rice seed supply chain
- Taxon
- riceOryza sativae6
- Material
- MR297e6
- Outcome
- safely distributed in rice seeds supply chaine6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Therefore, seeds of MR297 produced under pre-anthesis drought stressed condition could be safely distributed in rice seeds supply chain”
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See all 325 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.