Chlorophyll a fluorescence analysis in response to excitation irradiance in bean plants (Phaseolus vulgaris L. and Vigna unguiculata L. Walp) submitted to high temperature stress

Title:

Chlorophyll a fluorescence analysis in response to excitation irradiance in bean plants (Phaseolus vulgaris L. and Vigna unguiculata L. Walp) submitted to high temperature stress

Creator:

Costa, E. S., Bressan-Smith, R., Oliveira, J. G., and Campostrini, E.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:39669384-d12b-4dd3-af9b-cc6abc996c87
uuid:39669384-d12b-4dd3-af9b-cc6abc996c87
issn:0300-3604
doi:10.1023/A:1025860429593

Subject:

electron transport rate, net photosynthetic rate, and photochemical and non-photochemical quenching

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Bean plants Phaseolus vulgaris L. (cv. Carioca and Negro Huasteco) and Vigna unguiculata L. Walp (cv. Epace-10) were grown in a growth chamber with a photosynthetic photon flux density of 200 μmol m-2 s-1 at leaf level and air temperature of 25+1 °C. Fully expanded, first pair leaves of 12-d-old plants were submitted for 90 min to high temperature (25, 30, 35, 40, 45, and 48 °C). Chlorophyll a fluorescence parameters (ETR, qP, qN, and F0) were investigated using a modulated fluorimeter at 25 °C during recovery considered here as 48 h after stress induction period. An accentuated decrease in qP and an increase in qN at 48 °C in Carioca and Negro Huasteco was not observed in Epace-10. In response to excitation irradiance a great potential for ETR was found in Negro Huasteco at 25 °C, also demonstrated by net photosynthetic rate. At 48 °C ETR was high for Epace-10 while it was equal to zero for Carioca and Negro Huasteco. Tolerance to high temperature observed in Epace-10 provided important information about the adaptative characteristics of Vigna cultivars to warm climates. and E. S. Costa ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

77-82

Source:

Photosynthetica | 2003 Volume:41 | Number:1

Harvested from:

CDK

Metadata only:

false