Effects of leaf-to-fruit ratio on chlorophyll fluorescence parameters of walnut (Juglans regia L.) leaves

Title:

Effects of leaf-to-fruit ratio on chlorophyll fluorescence parameters of walnut (Juglans regia L.) leaves

Creator:

Zhang, C. F., Pan, C. D., and Chen, H.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:268e6563-71f2-4c47-a1d3-9bceb7557295
uuid:268e6563-71f2-4c47-a1d3-9bceb7557295
issn:0300-3604
doi:10.1007/s11099-018-0842-4

Subject:

defoliace, ovocné stromy, defoliation, fruit trees, photochemical efficiency of PSII, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

In this study, we investigated maximal quantum yield of PSII photochemistry(Fv/Fm),effective quantum yield of PSII photochemistry (ΦPSII), and nonphotochemical quenching (NPQ) of walnut (Juglans regia ‘Xinxin2’) leaves with different leaf-to-fruit ratios (LFRs). The results indicated that the increasing LFR increased the values of Fv/Fm, ΦPSII, and NPQ in leaves on the girdled shoot with one and two leaves, and decreased the values of Fv/Fm and ΦPSII in leaves on the girdled shoot with five leaves, whereas had no effect on the chlorophyll (Chl) fluorescence in leaves on the girdled shoot with three and four leaves. These results indicate that the effects of LFR on Chl fluorescence depend on a LFR range and show a transitional trend transition, and that excessive fruit load accelerates leaf senescence resulting in the destruction of the reaction center in PSII., C. F. Zhang, C. D. Pan, H. Chen., and Obsahuje bibliografii

Language:

Multiple languages

Rights:

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

Coverage:

1429-1436

Source:

Photosynthetica | 2018 Volume:56 | Number:4

Harvested from:

CDK

Metadata only:

false