Diurnal and seasonal trends in photosynthetic performance of Dalbergia sissoo Roxb. and Hardwickia binata Roxb. from a semi-arid ecosystem

Title:

Diurnal and seasonal trends in photosynthetic performance of Dalbergia sissoo Roxb. and Hardwickia binata Roxb. from a semi-arid ecosystem

Creator:

Saraswathi, S. G. and Paliwal, K.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:4b7a8b7c-9b81-4f3e-bb0b-0f9da3c68e74
uuid:4b7a8b7c-9b81-4f3e-bb0b-0f9da3c68e74
issn:0300-3604
doi:10.1007/s11099-008-0041-9

Subject:

net photosynthetic rate, photosynthetic photon flux density, species differences, stomatal conductance, temperature, transpiration rate, vapour pressure deficit, and water use efficiency

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Diurnal and seasonal trends in net photosynthetic rate (PN), stomatal conductance (g), transpiration rate (E), vapour pressure deficit, temperature, photosynthetic photon flux density, and water use efficiency (WUE) were compared in a two-year-old Dalbergia sissoo and Hardwickia binata plantation. Mean daily maximum PN in D. sissoo ranged from 21.40±2.60 µmol m-2 s-1 in rainy season I to 13.21±2.64 µmol m-2 s-1 in summer whereas in H. binata it was 20.04±1.20 µmol m-2 s-1 in summer and 13.64±0.16 µmol m-2 s-1 in winter. There was a linear relationship between daily maximum PN and gs in D. sissoo but there was no strong linear relationship between PN and gs in H. binata. In D. sissoo, the reduction in gs led to a reduction in both PN and E enabling the maintenance of WUE during dry season thereby managing unfavourable environmental conditions efficiently whereas in H. binata, an increase in gs causes an increase of PN and E with a significant moderate WUE. and S. G. Saraswathi, K. Paliwal.

Language:

Multiple languages

Rights:

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

Coverage:

248-254

Source:

Photosynthetica | 2008 Volume:46 | Number:2

Harvested from:

CDK

Metadata only:

false