Changes in biomass, chlorophyll content and gas exchange of beans and peppers under nitrogen and water stress

Title:

Changes in biomass, chlorophyll content and gas exchange of beans and peppers under nitrogen and water stress

Creator:

Peňuelas, J., Biel, C., and Estiarte, M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:33afeda5-362b-49c6-9756-4b6aedf6c4bb
uuid:33afeda5-362b-49c6-9756-4b6aedf6c4bb
urnnbn:urn:nbn:cz:aba007-000fin

Type:

model:internalpart and TEXT

Format:

print

Description:

We experimentally produced moderate water stress that reduced leaf, stem, root and fruit biomass of peppers, and severe nitrogen (N) limitations that almost stopped their development. Root/shoot ratios (R/S) were higher in N-limited plants. Low water availability (and also low N availability) produced lower stomatal conductance (g,). Specific leaf mass was higher and chlorophyll (Chl) concentration was lower under low N-availability. The same experimental conditions produced smaller differences among treatments in beans (with N-fixing symbionts). Water stress increased its relative importance as shown by the induced increase in root/shoot ratio. N stress was less important as shown by the absence of effects on Chl concentrations and g^. Both peppers and beans responded to limited availability of nitrogen and water by allocating to structures involved in uptake (roots), by longer organ duration, and by increasing the efficiency of N and water use.

Language:

Multiple languages

Rights:

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

Coverage:

535-542 and 57-64

Source:

Photosynthetica | 1993 Volume:29 | Number:4

Harvested from:

CDK

Metadata only:

false