Relationships between nitrogen content and net gas exchange components of a cotton leaf during ontogeny

Title:

Relationships between nitrogen content and net gas exchange components of a cotton leaf during ontogeny

Creator:

Bondada, B. R. and Oosterhuis, D. M.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:98b4b1ef-cc17-45ce-b31e-6e555f3a5781
uuid:98b4b1ef-cc17-45ce-b31e-6e555f3a5781
issn:0300-3604
doi:10.1023/A:1006999511907

Subject:

Gossypium hirsutum, leaf age, photosynthesis, stomatal conductance, and transpiration

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Relationships between leaf nitrogen (N) content and leaf gas exchange components of a single cotton (Gossypium hirsutum L.) leaf subtending the fruit during ontogeny were investigated under field conditions. A 20-d old leaf exhibited the highest physiological activity characterized by net photosynthetic (PN) and transpiration (E) rates, stomatal conductances to CO2 exchange (gsCO2) and water vapor transfer (gsH2O), and nitrogen (N) content. With the advent of leaf senescence, the gas exchange rates declined as exhibited by the 30-, 40-, and 60-d old leaves. Regression analysis indicated close relationships between gsCO2 and PN, and gsH2O and E as the leaves advanced towards senescence. Both PN and gsCO2 were related to N as they declined with leaf age. Thus, the declines in PN were associated with stomatal closure and removal of N during leaf ontogeny. and B. R. Bondada, D. M. Oosterhuis.

Language:

Multiple languages

Rights:

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

Coverage:

631-635

Source:

Photosynthetica | 1998 Volume:35 | Number:4

Harvested from:

CDK

Metadata only:

false