The photosynthetic response to elevated CO2 in high altitude potato species (Solanum curtilobum)

Title:

The photosynthetic response to elevated CO2 in high altitude potato species (Solanum curtilobum)

Creator:

Olivo, N., Martinez, C. A., and Oliva, M. A.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:d5a5d40a-f754-4fd8-9949-fa9fcea0979e
uuid:d5a5d40a-f754-4fd8-9949-fa9fcea0979e
issn:0300-3604
doi:10.1023/A:1021370429699

Subject:

CO2 enrichment, C3 photosynthesis, instaneous transpiration efficiency, Solanum tuberosum, and stomatal conductance

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Plants of Solanum curtilobum (from high altitude) and Solanum tuberosum (from low altitude) were grown in open-top chambers in a greenhouse at either ambient (AC, 360 µmol mol-1) or ca. twice ambient (EC, 720 µmol mol-1) CO2 concentrations for 30 d. CO2 treatments started at the reproductive stage of the plants. There were similar patterns in the physiological response to CO2 enrichment in the two species. Stomatal conductance was reduced by 59 % in S. tuberosum and by 55 % in S. curtilobum, but such a reduction did not limit the net photosynthetic rate (PN), which was increased by approximately 56 % in S. curtilobum and 53 % in S. tuberosum. The transpiration rate was reduced by 16 % in both potato species while instantaneous transpiration efficiency increased by 80 % in S. tuberosum and 90 % in S. curtilobum. Plants grown under EC showed 36 and 66 % increment in total dry biomass, whereas yields (dry mass of tubers) were increased by 40 and 85 % in S. tuberosum and S. curtilobum, respectively. EC promoted productivity by increasing PN. Thus S. tuberosum, cultivated around the world at low altitudes, and S. curtilobum, endemic of the highland Andes, respond positively to EC during the tuberisation stage. and N. Olivo, C. A. Martinez, M. A. Oliva.

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

309-313

Source:

Photosynthetica | 2002 Volume:40 | Number:2

Harvested from:

CDK

Metadata only:

false