Response of photosynthesis and chlorophyll fluorescence quenching to leaf dichotocarpism in Ligustrum vicaryi, an ornamental herb

Title:

Response of photosynthesis and chlorophyll fluorescence quenching to leaf dichotocarpism in Ligustrum vicaryi, an ornamental herb

Creator:

Yang, Y. Q., Yi, X. F., and Prasad, P.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:37c77c84-b54a-42b3-84d2-cf9bc806b79c
uuid:37c77c84-b54a-42b3-84d2-cf9bc806b79c
issn:0300-3604
doi:10.1007/s11099-009-0022-7

Subject:

carotenoids, chlorophyll, CO2 uptake, energy utilization, photoprotection, sunflecks, and thermal dissipation

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

Net photosynthetic rate of yellow upper leaves (UL) of Ligustrum vicaryi was slightly, but not significantly higher than that of green lower leaves (LL). Diurnally, maximum photochemical efficiency of photosystem 2, PS2 (Fv/Fm) of LL did not significantly decline but the UL showed fairly great daily variations. Yield of PS2 of UL showed an enantiomorphous variation to the photosynthetically active radiation and was significantly lower than in the LL. Unlike Fv/Fm, the efficiency of energy conversion in PS2 and both non-photosynthetic and photosynthetic quenching did not differ in UL and LL. Significant differences between UL and LL were found in contents of chlorophyll (Chl) a, b, and carotenoids (Car) and ratios of Chl a/b, Chl b/Chl (a+b), and Car/Chl (a+b). Leaf colour dichotocarpism in L. vicaryi was mainly caused by different photon utilization; sunflecks affected the LL. and Y. Q. Yang, X. F. Yi, P. Prasad.

Language:

Multiple languages

Rights:

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

Coverage:

137-140

Source:

Photosynthetica | 2009 Volume:47 | Number:1

Harvested from:

CDK

Metadata only:

false