14CO2 assimilation and 14C-photosynthate translocation in different leaves of sunflower

Title:

14CO2 assimilation and 14C-photosynthate translocation in different leaves of sunflower

Creator:

Subrahmanyam, Desiraju and Rathore, V. S.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:1a786767-5fcc-4c30-a63b-4a59d6d0eee9
uuid:1a786767-5fcc-4c30-a63b-4a59d6d0eee9
issn:0300-3604
doi:10.1023/B:PHOT.0000040607.67963.38

Subject:

14C-partioning, Helianthus, and seed filling

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Chlorophyll and nitrogen contents were highest in leaves of middle position, similarly as photosynthetic efficiency represented by 14C fixation (maxima in leaf 5 from the top). All the leaves lost 14C after 2 weeks of 14CO2 exposure. However, the reduction in radioactivity was less in young upper leaves than in the mature lower leaves. Leaves exported 14C-photosynthates to stem both above and below the exposed leaf. Very little radioactivity was recovered from the seeds of plants in which only first or second leaves were exposed to 14CO2 implying thereby that the carbon contribution of first two leaves to seed filling was negligible. The contribution of leaves to seed filling increased with the leaf position up to the sixth leaf from the top and after the seventh leaf their contribution to seed filling declined gradually. and Desiraju Subrahmanyam, V. S. Rathore.

Language:

Multiple languages

Rights:

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

Coverage:

313-316

Source:

Photosynthetica | 2004 Volume:42 | Number:2

Harvested from:

CDK

Metadata only:

false