Abstract
SUMMARY Five clonal plants of three genotypes of Lotus corniculatus were grown in each of eight controlled environments under combinations of two temperature regimes (18/10 °C and 25/15 °C), two CO 2 concentrations (ambient and 700 ppmv) and two water applications ( ad libitum or 60% draughted). Plants were harvested at full flower and measurements made of plant growth and development. Of the three environmental variables studied, higher growth temperatures resulted in the largest number of significant changes to the measured variables. Reproductive capacity, growth rate, shoot biomass, water use efficiency and chlorophyll content were all enhanced by raising the growth temperature from 18 to 25 °C. Doubling the CO 2 concentration enhanced the growth rate, shoot biomass and water use efficiency and ameliorated some of the effects of drought, including reproductive capacity, and biomass production, but reduced flowering time, specific leaf area, and chlorophyll content of both droughted and undroughted plants. Drought alone reduced reproductive capacity, growth rate and above ground biomass but significantly increased root biomass in all environments. The agronomic effects resulting from a combined increase in growth temperature, doubled CO 2 concentration and mild drought in this experiment were a shorter vegetative period and an increase in biomass, but a fall in reproductive capacity.
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Claims 8
Claim · model-written summary
Higher temperature caused the most significant changes among the three environmental variables.
- Taxon
- Lotus corniculatus
_Lotus_corniculatus_-_Plant_habit.jpg?width=60)
Lotus corniculatust0 - Outcome
- largest number of significant changese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Lotus_corniculatus_-_Plant_habit.jpg?width=500)
Verbatim
e0“higher growth temperatures resulted in the largest number of significant changes to the measured variables.”
t0“Lotus corniculatus”
Claim · model-written summary
Raising temperature enhanced reproductive capacity, growth rate, shoot biomass, water-use efficiency and chlorophyll.
- Taxon
- Lotus corniculatusLotus corniculatust0
- Treatment
- raising the growth temperature from 18 to 25 °Ce0
- Outcome
- Reproductive capacity, growth rate, shoot biomass, water use efficiency and chlorophyll contente0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Reproductive capacity, growth rate, shoot biomass, water use efficiency and chlorophyll content were all enhanced by raising the growth temperature from 18 to 25 °C.”
t0“Lotus corniculatus”
Claim · model-written summary
Doubling CO2 enhanced growth rate, shoot biomass and water-use efficiency.
- Taxon
- Lotus corniculatusLotus corniculatust0
- Treatment
- Doubling the CO 2 concentratione0
- Outcome
- growth rate, shoot biomass and water use efficiencye0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Doubling the CO 2 concentration enhanced the growth rate, shoot biomass and water use efficiency”
t0“Lotus corniculatus”
Claim · model-written summary
Doubling CO2 ameliorated drought effects on reproductive capacity and biomass.
- Taxon
- Lotus corniculatusLotus corniculatust0
- Treatment
- droughte0
- Outcome
- reproductive capacity, and biomass productione0
- Direction
- amelioratede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ameliorated some of the effects of drought, including reproductive capacity, and biomass production”
t0“Lotus corniculatus”
Claim · model-written summary
Doubling CO2 reduced flowering time, specific leaf area and chlorophyll in both watering groups.
- Taxon
- Lotus corniculatusLotus corniculatust0
- Treatment
- Doubling the CO 2 concentratione1
- Outcome
- flowering time, specific leaf area, and chlorophyll contente0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“reduced flowering time, specific leaf area, and chlorophyll content of both droughted and undroughted plants”
e1“Doubling the CO 2 concentration”
t0“Lotus corniculatus”
Claim · model-written summary
Drought reduced reproductive capacity, growth rate and aboveground biomass.
- Taxon
- Lotus corniculatusLotus corniculatust0
- Treatment
- Droughte0
- Outcome
- reproductive capacity, growth rate and above ground biomasse0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought alone reduced reproductive capacity, growth rate and above ground biomass”
t0“Lotus corniculatus”
Claim · model-written summary
Drought increased root biomass significantly in all environments.
- Taxon
- Lotus corniculatusLotus corniculatust0
- Treatment
- Droughte1
- Outcome
- root biomasse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significantly increased root biomass in all environments”
e1“Drought alone reduced reproductive capacity”
t0“Lotus corniculatus”
Claim · model-written summary
Combined warming, doubled CO2 and mild drought shortened the vegetative period and increased biomass but reduced reproductive capacity.
- Taxon
- Lotus corniculatusLotus corniculatust0
- Outcome
- shorter vegetative period and an increase in biomass, but a fall in reproductive capacitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a shorter vegetative period and an increase in biomass, but a fall in reproductive capacity”
e1“combined increase in growth temperature, doubled CO 2 concentration and mild drought”
t0“Lotus corniculatus”
The same questions in other papers
drought · growth · Lotus corniculatusPositive and negative results
2 papers in the same direction as this paper · 4 in the opposite direction
- positive
- negative
- negative
3 papers more in this group
See all 7 papers →co2 · physiology: water · Lotus corniculatusResults agree
1 paper in the same direction as this paper
- positive
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.