Claim · model-written summary
Seed-set of kidney bean decreased with temperature over 28/18 to 40/30 °C under both ambient and elevated CO2.
Verbatim
e0“Red kidney bean cv. Montcalm was grown in controlled environments”
e2“There were strong negative relations between temperature over a range of 28/18–40/30 °C and seed‐set (slope, − 6.5% °C −1 ) and seed number per pod (− 0.34 °C −1 ) under both ambient and elevated CO2 levels”
Title
P. V. Vara Prasad; Kenneth J. Boote; L. Hartwell Allen; et al. Global Change Biology 2002. doi:10.1046/j.1365-2486.2002.00508.x
Other claims from this paper (15)
- Association Seed number per pod of kidney bean decreased with temperature over 28/18 to 40/30 °C.
- Association Exposure to temperature above 28/18 °C reduced photosynthesis under ambient CO2 by 0.3 µmol m −2 s −1 per °C.
- Association Exposure to temperature above 28/18 °C reduced photosynthesis under elevated CO2 by 0.9 µmol m −2 s −1 per °C.
- Association Exposure to temperature above 28/18 °C reduced seed number under ambient CO2 by 2.3 per °C.
- Association Exposure to temperature above 28/18 °C reduced seed number under elevated CO2 by 3.3 per °C.
- Association Exposure to temperature above 28/18 °C reduced seed yield under ambient CO2 by 1.1 g per plant per °C.
- Association Exposure to temperature above 28/18 °C reduced seed yield under elevated CO2 by 1.5 g per plant per °C.
- Mechanism Reduced seed-set and seed number at high temperatures were primarily owing to decreased pollen production and pollen viability.
- Intervention effect Elevated CO2 did not affect seed size of kidney bean compared with ambient CO2.
- Association Temperature above 31/21 °C linearly reduced seed size by 0.07 g per °C.
- Intervention effect Elevated CO2 increased photosynthesis of kidney bean by approximately 50% compared with ambient CO2.
- Intervention effect Elevated CO2 increased seed yield of kidney bean by 24% compared with ambient CO2.
- Observation There was no beneficial interaction of CO2 and temperature on kidney bean.
- Observation CO2 enrichment did not offset the negative effects of high temperatures on reproductive processes and yield of kidney bean.
- Observation Yield losses owing to high temperature above 34/24 °C are likely to occur, especially at sensitive stages.