Alterations in photosynthesis and antioxidant enzyme activity in winter wheat subjected to post-anthesis water-logging

Title:

Alterations in photosynthesis and antioxidant enzyme activity in winter wheat subjected to post-anthesis water-logging

Creator:

Tan, W., Liu, J., Dai, T., Jing, Q., Cao, W., and Jiang, D.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:7855cd66-cc5f-4d1b-81cd-90a613424555
uuid:7855cd66-cc5f-4d1b-81cd-90a613424555
issn:0300-3604
doi:10.1007/s11099-008-0005-0

Subject:

catalase, chlorophyll fluorescence; ;, dry matter redistribution, net photosynthetic rate, peroxidase, photosystem 2, superoxide dismutase, Triticum aestivum, and yield

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Winter wheat (Triticum aestivum L.) cultivars Yangmai 9 (water-logging tolerant) and Yumai 34 (water-logging sensitive) were subjected to water-logging (WL) from 7 d after anthesis to determine the responses of photosynthesis and anti-oxidative enzyme activities in flag leaf. At 15 d after treatment (DAT), net photosynthetic rate under WL was only 3.7 and 8.9 µmol(CO2) m-2 s-1 in Yumai 34 and Yangmai 9, respectively, which was much lower than in the control. Ratios of variable to maximum and variable to initial fluorescence, actual photosynthetic efficiency, and photochemical quenching were much lower, while initial fluorescence and non-photochemical quenching were much higher under WL than in control, indicating damage to photosystem 2. WL decreased activities of superoxide dismutase and catalase in both cultivars, and activity of peroxidase (POD) in Yumai 34, while POD activity in Yangmai 9 was mostly increased. The obvious decrease in the amount of post-anthesis accumulated dry matter, which was redistributed to grains, also contributed to the grain yield loss under WL. and W. Tan ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

21-27

Source:

Photosynthetica | 2008 Volume:46 | Number:1

Harvested from:

CDK

Metadata only:

false