Effects of angular leaf spot and rust on leaf gas exchange and yield of common bean (Phaseolus vulgaris)

Title:

Effects of angular leaf spot and rust on leaf gas exchange and yield of common bean (Phaseolus vulgaris)

Creator:

Jesus Junior, W. C., Vale, F. X. R., Martinez, C. A., Coelho, R. R., Costa, L. C., Hau, B., and Zambolim, L.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:7f51efad-212f-4355-a94b-2f5c81cd9a46
uuid:7f51efad-212f-4355-a94b-2f5c81cd9a46
issn:0300-3604
doi:10.1023/A:1015620532467

Subject:

healthy leaf area index, Phaeoisariopsis griseola, photosynthesis, stomatal conductance, Uromyces appendiculatus, and water use efficiency

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Isolated and interactive effects of angular leaf spot (caused by Phaeoisariopsis griseola) and rust (caused by Uromyces appendiculatus) on leaf gas exchange and yield was studied in common bean (Phaseolus vulgaris L. cv. Carioca) plants. Gas exchange was measured on 37, 44, 51, and 58 d after planting using a portable photosynthesis system. The inoculation of plants with P. griseola (P), U. appendiculatus (U), and the combination of both pathogens (P+U) caused a significant reduction of net photosynthetic rate (PN) and yield. The reduction of stomatal conductance (gs), PN, and yield was higher under P and combination of P+U than under U treatment. By effect of U, the reduction on yield was higher than the reductions on gas exchange parameters. On the treatment P+U, a reduction of 23 % in PN and a correspondent reduction of 32 % in yield was observed. The interactive effects of the pathogens on yield could be explained in part by the decreases in gs and in PN of diseased bean leaves. The combined effect of both diseases on yield and gas exchange parameters suggests an antagonistic interaction. and W. C. Jesus Junior ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

603-606

Source:

Photosynthetica | 2001 Volume:39 | Number:4

Harvested from:

CDK

Metadata only:

false