Abstract
At present in the context of climate change, temperature is one of the most important environmental factors influencing the rice crop growth, development, and yield. The duration of each phenological stage is influenced by temperature which has direct impact on yield. The objective of this study is to provide an overview of the influence of elevated temperature on rice phenology and accumulated growing degree days. The experiment was conducted during Kharif 2012 under temperature control chamber, in which temperature is elevated from the ambient level (2°C and 4°C) for the entire crop growth period. The results showed that the days taken to attain maturity was less under elevated temperature of 4°C (96 days) and 2°C (102 days) when compared to the ambient temperature (108 days). The accumulated growing degree days were higher under elevated temperature of 4°C and nearer value for 2°C viz., 1641 and 1583 respectively from that of ambient. Under elevated temperature of 4°C and 2°C, the grain yield was 23 and 13.3 percent less from the ambient. The highest grain yield is from the treatment under ambient temperature with 6.2 t/ha followed by 5.3t/ha under 2oC level and 4.7 t/ha at 4oC level. The yield loss under elevated temperature is due to the sterile florets and lesser crop duration.
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Claims 7
Claim · model-written summary
Rice reached maturity in 96 days at 4°C above ambient, compared with 108 days at ambient temperature.
- Taxon
- Rice
Oryza sativat0 - Treatment
- elevated temperature of 4°Ce0
- Outcome
- days taken to attain maturitye0
- Direction
- lesse0
- Value
- 96 dayse0
- Qualifier
- 108 dayse0
- Comparator
- ambient temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the days taken to attain maturity was less under elevated temperature of 4°C (96 days) and 2°C (102 days) when compared to the ambient temperature (108 days).”
t0“Rice”
Claim · model-written summary
Rice reached maturity in 102 days at 2°C above ambient, compared with 108 days at ambient temperature.
- Taxon
- RiceOryza sativat0
- Treatment
- 2°Ce0
- Outcome
- days taken to attain maturitye0
- Direction
- lesse0
- Value
- 102 dayse0
- Qualifier
- 108 dayse0
- Comparator
- ambient temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the days taken to attain maturity was less under elevated temperature of 4°C (96 days) and 2°C (102 days) when compared to the ambient temperature (108 days).”
t0“Rice”
Claim · model-written summary
Accumulated growing degree days under 4°C warming were 1641, above ambient.
- Taxon
- RiceOryza sativat0
- Treatment
- elevated temperature of 4°Ce0
- Outcome
- accumulated growing degree dayse0
- Direction
- highere0
- Value
- 1641e0
- Comparator
- ambiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulated growing degree days were higher under elevated temperature of 4°C and nearer value for 2°C viz., 1641 and 1583 respectively from that of ambient.”
t0“Rice”
Claim · model-written summary
Accumulated growing degree days under 2°C warming were 1583, near ambient.
- Taxon
- RiceOryza sativat0
- Treatment
- 2°Ce0
- Outcome
- accumulated growing degree dayse0
- Direction
- nearere0
- Value
- 1583e0
- Comparator
- ambiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The accumulated growing degree days were higher under elevated temperature of 4°C and nearer value for 2°C viz., 1641 and 1583 respectively from that of ambient.”
t0“Rice”
Claim · model-written summary
Rice grain yield under 4°C warming was 23 percent below ambient, at 4.7 t/ha versus 6.2 t/ha.
- Taxon
- RiceOryza sativat0
- Treatment
- elevated temperature of 4°Ce0
- Outcome
- grain yielde0
- Direction
- lesse0
- Value
- 23e0
- Qualifier
- 4.7 t/hae1
- Comparator
- ambiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under elevated temperature of 4°C and 2°C, the grain yield was 23 and 13.3 percent less from the ambient.”
e1“The highest grain yield is from the treatment under ambient temperature with 6.2 t/ha followed by 5.3t/ha under 2oC level and 4.7 t/ha at 4oC level.”
t0“Rice”
Claim · model-written summary
Rice grain yield under 2°C warming was 13.3 percent below ambient, at 5.3t/ha.
- Taxon
- RiceOryza sativat0
- Treatment
- 2°Ce0
- Outcome
- grain yielde0
- Direction
- lesse0
- Value
- 13.3 percente0
- Qualifier
- 5.3t/hae1
- Comparator
- ambiente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under elevated temperature of 4°C and 2°C, the grain yield was 23 and 13.3 percent less from the ambient.”
e1“The highest grain yield is from the treatment under ambient temperature with 6.2 t/ha followed by 5.3t/ha under 2oC level and 4.7 t/ha at 4oC level.”
t0“Rice”
Claim · model-written summary
The authors attributed yield loss under warming to sterile florets and a shorter crop duration.
- Taxon
- RiceOryza sativat0
- Treatment
- elevated temperaturee0
- Outcome
- yield losse0
- Qualifier
- sterile florets and lesser crop duratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield loss under elevated temperature is due to the sterile florets and lesser crop duration.”
t0“Rice”
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