Abstract
To elucidate effects of climate change on growth and yield of crop plants, we developed a new growth chamber with an air-curtain shed roof. The chamber space was divided into two: one side followed outdoor temperature and the other side was several degrees higher than the outdoor temperature. Furthermore, we tried to assess the real temperature effect by achieving the same vapor pressure deficit (VPD) in two divided spaces and grew rice plants from seedling to maturity stages as an experimental material. For the high temperature (HT) plot, we adopted +4℃ of the outdoor-temperature-following (control; CONT) plot because, in a preliminary experiment, +5℃ of CONT induced sterility in most grains. The HT conditions advanced the day to flowering of rice, but its grain yield was lower than those obtained under CONT conditions. Trial of the same VPD under HT and CONT conditions suggested that the effect of VPD on rice growth and yield was not large during the June―October growth season.
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Claims 5
Claim · model-written summary
The chamber maintained a warm side several degrees above outdoor temperature.
- Taxon
- Rice
Oryza sativat0 - Outcome
- temperaturee0
- Direction
- highere0
- Value
- several degreese0
- Comparator
- outdoor temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one side followed outdoor temperature and the other side was several degrees higher than the outdoor temperature”
t0“Rice”
Claim · model-written summary
A preliminary temperature increase of 5°C induced sterility in most grains.
- Taxon
- RiceOryza sativat0
- Treatment
- +5℃ of CONTe0
- Outcome
- sterility in most grainse0
- Comparator
- CONTe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“+5℃ of CONT induced sterility in most grains”
t0“Rice”
Claim · model-written summary
High temperature advanced flowering day in rice.
- Taxon
- RiceOryza sativat0
- Treatment
- HT conditionse0
- Outcome
- day to floweringe0
- Direction
- advancede0
- Comparator
- CONT conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT conditions advanced the day to flowering of rice, but its grain yield was lower than those obtained under CONT conditions”
t0“Rice”
Claim · model-written summary
High temperature lowered grain yield compared with control.
- Taxon
- RiceOryza sativat0
- Treatment
- HT conditionse0
- Outcome
- grain yielde0
- Direction
- lowere0
- Comparator
- CONT conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“HT conditions advanced the day to flowering of rice, but its grain yield was lower than those obtained under CONT conditions”
t0“Rice”
Claim · model-written summary
Under matched vapor pressure deficit, its effect on rice growth and yield was not large during June to October.
- Taxon
- RiceOryza sativat0
- Treatment
- VPDe0
- Outcome
- rice growth and yielde0
- Direction
- not largee0
- Qualifier
- June―October growth seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effect of VPD on rice growth and yield was not large during the June―October growth season”
t0“Rice”
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