Abstract
Intraspecific variation in crop responses to global climate change conditions would provide opportunities to adapt crops to future climates. These experiments explored intraspecific variation in response to elevated CO2 and to high temperature during anthesis in Chenopodium quinoa Wild. Three cultivars of quinoa were grown to maturity at 400 (“ambient”) and 600 (“elevated”) μmol·mol−1 CO2 concentrations at 20/14 °C day/night (“control”) temperatures, with or without exposure to day/night temperatures of 35/29 °C (“high” temperatures) for seven days during anthesis. At control temperatures, the elevated CO2 concentration increased the total aboveground dry mass at maturity similarly in all cultivars, but by only about 10%. A large down-regulation of photosynthesis at elevated CO2 occurred during grain filling. In contrast to shoot mass, the increase in seed dry mass at elevated CO2 ranged from 12% to 44% among cultivars at the control temperature. At ambient CO2, the week-long high temperature treatment greatly decreased (0.30 × control) or increased (1.70 × control) seed yield, depending on the cultivar. At elevated CO2, the high temperature treatment increased seed yield moderately in all cultivars. These quinoa cultivars had a wide range of responses to both elevated CO2 and to high temperatures during anthesis, and much more variation in harvest index responses to elevated CO2 than other crops that have been examined.
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Claims 8
Claim · model-written summary
At control temperatures, elevated CO2 increased total aboveground dry mass by about 10% similarly in all cultivars.
- Taxon
- Chenopodium quinoa
Chenopodium quinoae0 - Treatment
- elevated CO2 concentratione1
- Outcome
- total aboveground dry masse1
- Direction
- increasede1
- Value
- about 10%e1
- Qualifier
- similarly in all cultivarse1
- Comparator
- ambiente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These experiments explored intraspecific variation in response to elevated CO2 and to high temperature during anthesis in Chenopodium quinoa Wild”
e2“Three cultivars of quinoa were grown to maturity at 400 (“ambient”) and 600 (“elevated”) μmol·mol−1 CO2 concentrations”
e1“At control temperatures, the elevated CO2 concentration increased the total aboveground dry mass at maturity similarly in all cultivars, but by only about 10%”
Claim · model-written summary
Elevated CO2 increased seed dry mass by 12% to 44% among cultivars at control temperature.
- Taxon
- Chenopodium quinoaChenopodium quinoae0
- Treatment
- elevated CO2e3
- Outcome
- seed dry masse3
- Direction
- increasee3
- Value
- 12% to 44%e3
- Comparator
- ambiente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These experiments explored intraspecific variation in response to elevated CO2 and to high temperature during anthesis in Chenopodium quinoa Wild”
e2“Three cultivars of quinoa were grown to maturity at 400 (“ambient”) and 600 (“elevated”) μmol·mol−1 CO2 concentrations”
e3“In contrast to shoot mass, the increase in seed dry mass at elevated CO2 ranged from 12% to 44% among cultivars at the control temperature”
Claim · model-written summary
Elevated CO2 caused a large down-regulation of photosynthesis during grain filling.
- Taxon
- Chenopodium quinoaChenopodium quinoae0
- Organ / stage
- grain fillinge2
- Treatment
- elevated CO2e2
- Outcome
- down-regulation of photosynthesise2
- Direction
- down-regulatione2
- Comparator
- ambiente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These experiments explored intraspecific variation in response to elevated CO2 and to high temperature during anthesis in Chenopodium quinoa Wild”
e1“Three cultivars of quinoa were grown to maturity at 400 (“ambient”) and 600 (“elevated”) μmol·mol−1 CO2 concentrations”
e2“A large down-regulation of photosynthesis at elevated CO2 occurred during grain filling”
Claim · model-written summary
A week-long high temperature treatment at ambient CO2 decreased seed yield to 0.30 × control in some cultivars.
- Taxon
- Chenopodium quinoaChenopodium quinoae0
- Treatment
- week-long high temperature treatmente4
- Outcome
- seed yielde4
- Direction
- decreasede4
- Value
- 0.30 × controle4
- Qualifier
- depending on the cultivare4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These experiments explored intraspecific variation in response to elevated CO2 and to high temperature during anthesis in Chenopodium quinoa Wild”
e4“At ambient CO2, the week-long high temperature treatment greatly decreased (0.30 × control) or increased (1.70 × control) seed yield, depending on the cultivar”
Claim · model-written summary
A week-long high temperature treatment at ambient CO2 increased seed yield to 1.70 × control in some cultivars.
- Taxon
- Chenopodium quinoaChenopodium quinoae0
- Treatment
- week-long high temperature treatmente4
- Outcome
- seed yielde4
- Direction
- increasede4
- Value
- 1.70 × controle4
- Qualifier
- depending on the cultivare4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These experiments explored intraspecific variation in response to elevated CO2 and to high temperature during anthesis in Chenopodium quinoa Wild”
e4“At ambient CO2, the week-long high temperature treatment greatly decreased (0.30 × control) or increased (1.70 × control) seed yield, depending on the cultivar”
Claim · model-written summary
At elevated CO2, the high temperature treatment moderately increased seed yield in all cultivars.
- Taxon
- Chenopodium quinoaChenopodium quinoae0
- Treatment
- high temperature treatmente5
- Outcome
- seed yielde5
- Direction
- increasede5
- Qualifier
- moderatelye5
- Comparator
- controle4
- Setting
- elevated CO2e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These experiments explored intraspecific variation in response to elevated CO2 and to high temperature during anthesis in Chenopodium quinoa Wild”
e4“At ambient CO2, the week-long high temperature treatment greatly decreased (0.30 × control) or increased (1.70 × control) seed yield, depending on the cultivar”
e5“At elevated CO2, the high temperature treatment increased seed yield moderately in all cultivars”
Claim · model-written summary
The quinoa cultivars had a wide range of responses to both elevated CO2 and high temperature during anthesis.
- Taxon
- Chenopodium quinoaChenopodium quinoae0
- Outcome
- wide range of responsese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These experiments explored intraspecific variation in response to elevated CO2 and to high temperature during anthesis in Chenopodium quinoa Wild”
e7“These quinoa cultivars had a wide range of responses to both elevated CO2 and to high temperatures during anthesis”
Claim · model-written summary
Harvest index responses to elevated CO2 varied much more among quinoa cultivars than in other crops.
- Taxon
- Chenopodium quinoaChenopodium quinoae0
- Outcome
- harvest index responses to elevated CO2e6
- Qualifier
- much more variatione6
- Comparator
- other cropse6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“These experiments explored intraspecific variation in response to elevated CO2 and to high temperature during anthesis in Chenopodium quinoa Wild”
e6“much more variation in harvest index responses to elevated CO2 than other crops that have been examined”
The same questions in other papers
heat · yield · Chenopodium quinoa (quinoa)Positive and negative results
1 in the opposite direction
- negative
co2 · growth · Chenopodium quinoa (quinoa)Positive and negative results
1 paper in the same direction as this paper · 2 in the opposite direction
- positive
- negative
- negative
co2 · molecular: expression · Chenopodium quinoa (quinoa)Results agree
1 paper in the same direction as this paper
- negative
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.