Claim · model-written summary
High temperature right before anthesis was the second most detrimental to spikelet fertility within the flowering day.
- Taxon
- Indica Rices
Oryza sativa Indica Groupt0 - Treatment
- high temperature right before anthesise1
- Outcome
- spikelet fertilitye1
- Direction
- second moste1
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Indica Rices”
e1“Within the flowering day, high temperature during anthesis time was the most detrimental to spikelet fertility, high temperature right before anthesis being the second most”
Title
High Temperature-Induced Sterility in Indica Rices at Flowering
Tetsuo SATAKE; Shouichi YOSHIDA Japanese Journal of Crop Science 1978. doi:10.1626/jcs.47.6
Other claims from this paper (13)
- Intervention effect High temperature induced spikelet sterility largely on the flowering day.
- Intervention effect High temperature during anthesis was the most detrimental to spikelet fertility within the flowering day.
- Intervention effect High temperature after anthesis had little influence on spikelet fertility.
- Intervention effect Exposure to high temperature one hour after anthesis left spikelet fertility normal.
- Mechanism Sterility induced by high temperature was attributed to disturbed pollen shedding and decreased pollen viability.
- Intervention effect High temperature decreased the number of germinated pollen grains on the stigma.
- Intervention effect The pistil ability to be fertilized remained unaffected by high temperature up to 41°C.
- Observation The critical temperature to induce 20% sterility was 36.5°C for heat-tolerant N22 after 8 hours a day of exposure.
- Observation The critical temperature to induce 20% sterility was 32°C for heat-susceptible BKN6624 after 8 hours a day of exposure.
- Observation The critical duration at 38°C to induce 20% sterility was 4 hours for N22.
- Observation The critical duration at 38°C to induce 20% sterility was 2 hours for BKN6624.
- Intervention effect A 2 hour treatment at 41°C induced about 90% sterility in three rice varieties.
- Mechanism Anther dehiscence and early morning anthesis are considered important characteristics for heat tolerance of rice varieties.