Measurements of reflectance and fluorescence spectra for nondestructive characterizing ripeness of grapevine berries

Title:

Measurements of reflectance and fluorescence spectra for nondestructive characterizing ripeness of grapevine berries

Creator:

Navrátil, M. and Buschmann, C.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:6f7e2599-8243-4aaf-a777-8e7ac0dd46c1
uuid:6f7e2599-8243-4aaf-a777-8e7ac0dd46c1
issn:0300-3604
doi:10.1007/s11099-015-0163-9

Subject:

fotosyntéza, photosynthesis, Cabernet Sauvignon, CIE 1931, plant pigments, Riesling, 2, and 581

Type:

model:article and TEXT

Format:

print, bez média, and svazek

Description:

In vivo reflectance and fluorescence spectra from berry skins of a white (Riesling) and red (Cabernet Sauvignon) grapevine variety were measured during a ripening season with a new CMOS radiometer instrument. Classical reference measurements were also carried out for a sugar content of the berry juice [°Brix] and pigment contents (chlorophyll a and b, carotenoids, anthocyanins) from methanol extracts of the berry skin. We showed that the colours and the spectra analysed from them could be taken as an unambiguous indicator of grapevine ripening. Reflectance spectra, which were affected by the content of pigments (chlorophylls and anthocyanins), effects of surface (wax layers), and tissue structure (cell size) of the berries well correlated (R2 = 0.89) with the °Brix measurements of the berries. The fast data acquisition of both reflectance and fluorescence spectra in one sample with our radiometer instrument made it superior over the time-consuming, traditional, and mostly destructive chemical analysis used in vine-growing management., M. Navrátil, C. Buschmann., and Obsahuje seznam literatury

Language:

Multiple languages

Rights:

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

Coverage:

101-109

Source:

Photosynthetica | 2016 Volume:54 | Number:1

Harvested from:

CDK

Metadata only:

false