Cortical photosynthesis as a physiological marker for grape breeding: methods and approaches

Photosynthesis occurring in chlorenchymal tissues of lignified branches of perennial plants (cortical photosynthesis) has a significant impact on their productivity and resistance to adverse environmental conditions, such as water deficiency and low temperatures. Cortical photosynthesis occurring un...

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Bibliographic Details
Main Authors: Smolova, Tatiana, Khorobrykh, Andrew, Savchenko, Tatyana
Format: Conference Proceeding
Language:English
Subjects:
Bark
Biochemical analysis
Breeding
Breeding methods
Chlorophyll
Comparative analysis
Environmental conditions
Fluorescence
Grapes
Low temperature
Markers
Photosynthesis
Photosynthetic apparatus
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Summary:Photosynthesis occurring in chlorenchymal tissues of lignified branches of perennial plants (cortical photosynthesis) has a significant impact on their productivity and resistance to adverse environmental conditions, such as water deficiency and low temperatures. Cortical photosynthesis occurring under the outer bark of a lignified grape vine can become a convenient marker for breeding freeze-tolerant varieties. The following approaches can be undertaken to assess the functional state of the cortical photosynthetic apparatus: (1) analysis of the variable chlorophyll fluorescence parameters and (2) biochemical analysis of photosynthetic membrane preparations. To evaluate these approaches, in this work we have carried out the comparative analysis of characteristics of the cortical photosynthetic apparatus in grape varieties differing in freeze tolerance. This work was supported by grant №18-04-00079 from the Russian Foundation for Basic Research.
ISSN:2117-4458
2273-1709
2117-4458
DOI:10.1051/bioconf/20202502018