Photosynthesis and nitrogen allocation in needles in the sun and shade crowns of hybrid larch saplings: effect of nitrogen application

Title:

Photosynthesis and nitrogen allocation in needles in the sun and shade crowns of hybrid larch saplings: effect of nitrogen application

Creator:

Mao, Q. Z., Watanabe, M., Imori, M., Kim, Y. S., Kita, K., and Koike, T.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:3c37b22c-4d85-467c-a8ad-67e42d949218
uuid:3c37b22c-4d85-467c-a8ad-67e42d949218
issn:0300-3604
doi:10.1007/s11099-012-0049-z

Subject:

botanika, botany, foliar nutrient, hybrid larch, nitrogen deposition, sun- and shade needles, 2, and 58

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

We studied the effects of applying 50 kg(N) ha-1 year-1 of nitrogen (N) on needle photosynthesis, N allocation and nutrient content in the sun- and shade crowns of the hybrid larch F1 (Larix gmelinii var. japonica × L. kaempferi). The light-saturated net photosynthetic rate (PNmax) was not significantly affected by N application or crown position, although the contents of N, P, K, and chlorophyll (Chl), and the maximum rates of carboxylation and electron transport were lower in needles of the shade crown than of the sun crown. This difference was mainly due to an increase in the intercellular CO2 concentration (Ci) in the needles of the shade crown. Analysis of N allocation in photosynthetic systems revealed that more N was allocated to functions related to electron transport and ribulose-1,5-bisphosphate (RuBP) regeneration in needles of the shade crown. N allocation in needles of the hybrid larch F1 was regulated mainly by the light conditions, rather than by N application., Q. Z. Mao ... [et al.]., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

422-428

Source:

Photosynthetica | 2012 Volume:50 | Number:3

Harvested from:

CDK

Metadata only:

false