Abstract
Global climate change accompanied by continuous increases in atmospheric carbon dioxide (CO2) concentration and temperature affects the growth and yield of important crops. The present study investigated the effect of elevated temperature and CO2 concentrations on the growth, yield, and photosynthesis of potato (Solanum tuberosum L. cv. Superior) crops using Korean Soil-Plant-Atmosphere-Research chambers that allow the regulation of temperature and CO2 concentration under daylight conditions. Based on the average temperature from 1991 to 2010 in the Jeonju area, South Korea, potato plants were exposed to four different conditions: ambient weather (400 μmol mol-1, aCaT), elevated temperature (+4°C, aCeT), elevated CO2 concentration (800 μmol mol-1, eCaT), and concurrently elevated CO2 concentration and temperature (eCeT). Under aCeT conditions, the temperature exceeded the optimal growth temperature range towards the late growth phase that decreased stomatal conductance and canopy net photosynthetic rate and subsequently reduced biomass and tuber yield. Stomatal conductance and chlorophyll concentration were lower under eCaT conditions than under aCaT conditions, whereas late-growth phase biomass and tuber yield were greater. Compared to other conditions, eCeT yielded a distinct increase in growth and development and canopy net photosynthetic rate during tuber initiation and bulking. Consequently, biomass and canopy net photosynthesis increased, and tuber yield increased by 20.3%, which could be attributed to the increased tuber size, rather than increased tuber number. Elevated CO2 reduced chlorophyll, magnesium, and phosphorus concentrations; reducing nitrogen concentration (by approximately 39.7%) increased the C:N ratio. The data indicate that future climate conditions will likely change nutrient concentration and quality of crops. The present study shows that while elevated temperature may negatively influence the growth and yield of potato crops, especially towards the late-growth phase, the concurrent and appropriate elevation of CO2 and temperature could promote balanced development of source and sink organs and positively effect potato productivity and quality.
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Claims 11
Claim · model-written summary
Elevated temperature decreased stomatal conductance and canopy photosynthesis in late growth.
- Taxon
- potato
Solanum tuberosume1 - Material
- Solanum tuberosum L. cv. Superiore1
- Treatment
- aCeT conditionse0
- Outcome
- stomatal conductance and canopy net photosynthetic ratee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under aCeT conditions, the temperature exceeded the optimal growth temperature range towards the late growth phase that decreased stomatal conductance and canopy net photosynthetic rate”
e1“potato (Solanum tuberosum L. cv. Superior) crops”
Claim · model-written summary
Elevated temperature reduced potato biomass and tuber yield in late growth.
- Taxon
- potatoSolanum tuberosume1
- Material
- Solanum tuberosum L. cv. Superiore1
- Treatment
- aCeT conditionse0
- Outcome
- biomass and tuber yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under aCeT conditions, the temperature exceeded the optimal growth temperature range towards the late growth phase that decreased stomatal conductance and canopy net photosynthetic rate and subsequently reduced biomass and tuber yield.”
e1“potato (Solanum tuberosum L. cv. Superior) crops”
Claim · model-written summary
Elevated CO2 lowered stomatal conductance and chlorophyll relative to ambient weather.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- eCaT conditionse0
- Outcome
- Stomatal conductance and chlorophyll concentratione0
- Direction
- lowere0
- Comparator
- aCaT conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stomatal conductance and chlorophyll concentration were lower under eCaT conditions than under aCaT conditions”
e1“potato (Solanum tuberosum L. cv. Superior) crops”
Claim · model-written summary
Elevated CO2 increased late phase biomass and tuber yield relative to ambient weather.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- eCaT conditionse0
- Outcome
- late-growth phase biomass and tuber yielde0
- Direction
- greatere0
- Comparator
- aCaT conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stomatal conductance and chlorophyll concentration were lower under eCaT conditions than under aCaT conditions, whereas late-growth phase biomass and tuber yield were greater.”
e1“potato (Solanum tuberosum L. cv. Superior) crops”
Claim · model-written summary
Combined elevated CO2 and temperature increased growth, development and photosynthesis during tuber initiation and bulking.
- Taxon
- potatoSolanum tuberosume1
- Organ / stage
- tuber initiation and bulkinge0
- Treatment
- eCeTe0
- Outcome
- growth and development and canopy net photosynthetic ratee0
- Direction
- increasee0
- Comparator
- other conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared to other conditions, eCeT yielded a distinct increase in growth and development and canopy net photosynthetic rate during tuber initiation and bulking.”
e1“potato (Solanum tuberosum L. cv. Superior) crops”
Claim · model-written summary
Under combined elevation, biomass and canopy photosynthesis increased.
- Taxon
- potatoSolanum tuberosume2
- Treatment
- concurrently elevated CO2 concentration and temperaturee1
- Outcome
- biomass and canopy net photosynthesise0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Consequently, biomass and canopy net photosynthesis increased”
e1“concurrently elevated CO2 concentration and temperature (eCeT)”
e2“potato (Solanum tuberosum L. cv. Superior) crops”
Claim · model-written summary
Combined elevation increased tuber yield by 20.3%.
- Taxon
- potatoSolanum tuberosume2
- Treatment
- concurrently elevated CO2 concentration and temperaturee1
- Outcome
- tuber yielde0
- Direction
- increasede0
- Value
- 20.3%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tuber yield increased by 20.3%”
e1“concurrently elevated CO2 concentration and temperature (eCeT)”
e2“potato (Solanum tuberosum L. cv. Superior) crops”
Claim · model-written summary
Authors attributed the combined treatment yield increase to tuber size.
- Taxon
- potatoSolanum tuberosume1
- Organ / stage
- tuber sizee0
- Outcome
- tuber yielde0
- Qualifier
- rather than increased tuber numbere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“tuber yield increased by 20.3%, which could be attributed to the increased tuber size, rather than increased tuber number”
e1“potato (Solanum tuberosum L. cv. Superior) crops”
Claim · model-written summary
Elevated CO2 reduced chlorophyll, magnesium and phosphorus concentrations.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- Elevated CO2e0
- Outcome
- chlorophyll, magnesium, and phosphorus concentrationse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO2 reduced chlorophyll, magnesium, and phosphorus concentrations”
e1“potato (Solanum tuberosum L. cv. Superior) crops”
Claim · model-written summary
Elevated CO2 reduced nitrogen concentration by approximately 39.7%.
- Taxon
- potatoSolanum tuberosume1
- Treatment
- Elevated CO2e0
- Outcome
- nitrogen concentratione0
- Direction
- reducinge0
- Value
- approximately 39.7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Elevated CO2 reduced chlorophyll, magnesium, and phosphorus concentrations; reducing nitrogen concentration (by approximately 39.7%)”
e1“potato (Solanum tuberosum L. cv. Superior) crops”
Claim · model-written summary
The nitrogen decrease under elevated CO2 increased the C:N ratio.
- Taxon
- potatoSolanum tuberosume2
- Treatment
- Elevated CO2e1
- Outcome
- C:N ratioe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reducing nitrogen concentration (by approximately 39.7%) increased the C:N ratio”
e1“Elevated CO2 reduced chlorophyll”
e2“potato (Solanum tuberosum L. cv. Superior) crops”
The same questions in other papers
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See all 15 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.