Ontogenetic changes of photosynthetic and dark respiration rates in relation to nitrogen content in individual leaves of field crops

Title:

Ontogenetic changes of photosynthetic and dark respiration rates in relation to nitrogen content in individual leaves of field crops

Creator:

Osaki, M., Shinano, T., Kaneda, T., Yamada, S., and Nakamura, T.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:c94bb61d-a8f7-403a-b4b8-038d5795b6e5
uuid:c94bb61d-a8f7-403a-b4b8-038d5795b6e5
issn:0300-3604
doi:10.1023/A:1013774908492

Subject:

carbon-nitrogen interaction, growth respiration, leaf mass per area, and maintenance respiration

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Ontogenetic changes of rates of photon-saturated photosynthesis (Psat) and dark respiration (RD) of individual leaves were examined in relation to nitrogen content (Nc) in rice, winter wheat, maize, soybean, field bean, tomato, potato, and beet. Psat was positively correlated with Nc as follows: Psat = CfNc + Psat0, where Cf and Psat0 are coefficients. The value of Cf was high in maize, medium in rice and soybean, and low in field bean, potato, tomato, and beet, of which difference was not explained by ribulose-1,5-bisphoshate carboxylase/oxygenase (RuBPCO) content. RD was explained by Psat and/or Nc, however, two models must be applied according to plant species. RD related linearly with Psat and Nc in maize, field bean, and potato as follows: RD = a Psat + b, or RD = a'Nc + b', where a, a', b and b' are coefficients. In other species, the RD/Psat ratio increased exponentially with the decrease of Nc as follows: RD/Psat = a exp(b Nc), where a and b are coefficients. Therefore, RD in these crops was expressed as follows: In(RD) = ln(a Psat) + b Nc, indicating that RD in these crops was regulated by both Psat and Nc. and M. Osaki ... [et al.].

Language:

Multiple languages

Rights:

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

Coverage:

205-213

Source:

Photosynthetica | 2001 Volume:39 | Number:2

Harvested from:

CDK

Metadata only:

false