SOME MORPHOPHYSIOLOGICAL FEATURES OF LAVANDER CULTIVAR MICROPROPAGATED IN VITRO BY MERISTEM CULTURE

The parameters of photosynthetic activity were measured using a portable fluorometer LPT-1/CFU (Russia), which had been designed to assess the functional state of photosynthetic apparatus in various plant organs and tissues in vitro according to the parameters of chlorophyll fluorescence induction....

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Bibliographic Details
Published in:Poljoprivreda i šumarstvo 2018-03, Vol.64 (1), p.105-111
Main Authors: YEGOROVA, Natalia, BRAILKO, Valentina, STAVTZEVA, Irina, MITROFANOVA, Irina
Format: Article
Language:English
Subjects:
Abnormalities
Bound water
Chlorophyll
Cultivars
Flowers & plants
Fluorescence
Fluorometers
Lavandula
Lavandula angustifolia
Lavandula intermedia
Leaves
Moisture content
Oils & fats
Organs
Oxidation
Parameters
Photosynthesis
Physiology
Plant tissues
Retention capacity
Water content
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Summary:The parameters of photosynthetic activity were measured using a portable fluorometer LPT-1/CFU (Russia), which had been designed to assess the functional state of photosynthetic apparatus in various plant organs and tissues in vitro according to the parameters of chlorophyll fluorescence induction. The revealed features of lightinduction processes indicated a high photosynthetic activity in leaves and shoots of regenerants. [...]the relative photosynthetic activity (Fm-Fst)/Fm varied from 0.51 ± 0.04 to 0.68 ± 0.04 a.u. However, the cultivars Vdala and Sineva were characterized with the maximum values of this index, and in the cultivar Rannyaya it was minimal. In the cultivar Stepnaya we noticed minor abnormalities in the functioning of lightharvesting complexes: a significant part of the light energy was reflected, the maximum fluorescence was 117 a.u. Markers of lavender microshoots functional state determined by the method of chlorophyll fluorescence induction demonstrated the absence of photoinhibition and normal functioning of photosystems both at the level of light-harvesting complexes (the exception was the cultivar Stepnaya) and at the moment of electron donors oxidation in the photosystem II reaction center. Significant water retention capacity due to the bound water fraction was found under the high values of the total water content in leaf tissues of microshoots.
ISSN:0554-5579
1800-9492
DOI:10.17707/AgricultForest.64.1.13