Claim · model-written summary
Elevated CO2 had no effect on pollen viability, seed-set or seed number per pod of peanut.
- Taxon
- peanut
Arachis hypogaeae6 - Treatment
- elevated CO 2e1
- Outcome
- pollen viability, seed‐set, seed number per pode1
- Direction
- no_changeinferrede1
Not reportedComparator
Verbatim
e1“There were no effects of elevated CO 2 on pollen viability, seed‐set, seed number per pod, seed size, harvest index or shelling percentage”
e6“We conclude that there are no beneficial interactions between elevated CO 2 and temperature, and that seed yield of peanut will decrease under future warmer climates, particularly in regions where present temperatures are near or above optimum”
Title
P. V. Vara Prasad; Kenneth J. Boote; L. Hartwell Allen; et al. Global Change Biology 2003. doi:10.1046/j.1365-2486.2003.00708.x
Other claims from this paper (12)
- Intervention effect Doubling CO2 increased leaf photosynthesis of peanut relative to ambient CO2.
- Intervention effect Doubling CO2 increased seed yield of peanut relative to ambient CO2.
- Intervention effect Elevated CO2 had no effect on seed size, harvest index or shelling percentage of peanut.
- Intervention effect At ambient CO2, seed yield of peanut decreased by 14% as temperature rose from 32/22 to 36/26°C.
- Intervention effect At ambient CO2, seed yield of peanut decreased by 59% as temperature rose from 32/22 to 40/30°C.
- Intervention effect At ambient CO2, seed yield of peanut decreased by 90% as temperature rose from 32/22 to 44/34°C.
- Intervention effect Seed yield of peanut decreased by similar percentages at temperatures above 32/22 under elevated CO2, despite greater photosynthesis and vegetative growth.
- Mechanism Decreased seed yield of peanut at high temperature resulted from lower seed-set due to poor pollen viability.
- Mechanism Smaller seed size of peanut at high temperature resulted from decreased seed growth rates and decreased shelling percentages.
- Intervention effect Seed harvest index of peanut decreased from 0.41 to 0.05 as temperature increased from 32/22 to 44/34°C under both ambient and elevated CO2.
- Association There are no beneficial interactions between elevated CO2 and temperature for peanut seed yield.
- Association Seed yield of peanut is projected to decrease under future warmer climates.