Pigment content, chlorophyll fluorescence and photosynthetic activity of spruce dones under normal and limited mineral nutrition

Title:

Pigment content, chlorophyll fluorescence and photosynthetic activity of spruce dones under normal and limited mineral nutrition

Creator:

Hagg, C., Stober, F., and Lichtelnthaler, H. K.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:b2129207-e956-4376-8b96-205055e42202
uuid:b2129207-e956-4376-8b96-205055e42202
urnnbn:urn:nbn:cz:aba007-000fbo

Type:

model:internalpart and TEXT

Format:

print

Description:

During the vegetation period from June to October 1990 the growth, photosynthetic C02-fixation, pigment content and chlorophyll (Chl) fluorescence characteristics were compared in the needles of 5-year-old spruce dones Picea abies (L.) Karst., cultivated for two years on the soil and the sand, with or without addition of minerál fertilizers. Minerál deflciency in the spruce dones grown on the sand instead of a humus containing soil resulted in somewhat reduced lengthwise growth of shoots and needles, lower level of Chl and carotenoids (Car), as well as lower net photosynthetic rates (F^) per needle area unit and in generál also lower stomata conductance (gH2o) values. In contrast, the variable Chl fluorescence measured via the Chl fluorescence decrease ratio (Rfj = fd/fs) was only little affected, indicating an intemal íunctional photosynthetic apparatus even under minerál deflciency with a lower Chl content. In fact, Fj,} expressed on Chl basis was even signiflcantly higher in the newly developed 1990 needles of the sand cultures than in the soil ones. Application of a forestry fertilizer with basic minerals (K, Ca, Mg and some N) to the sand cultures increased growth of shoots and needles, levels of Chl and Čar, F^ and stomata conductance, and decreased the Chl fluorescence ratio F690/F735 and lability of the photosynthetic apparatus, as also seen in increased values of the ratio Chl/Car (a+b/x+c). The hasič minerál elements are thus necessaiy for the photosynthetic apparatus development, as well as stability of its pigment content and physiological function.

Language:

Multiple languages

Rights:

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

Coverage:

385-400 and 121-136

Source:

Photosynthetica | 1992 Volume:27 | Number:3

Harvested from:

CDK

Metadata only:

false