Some special features of the water regime and the photosynthetic apparatus activity in Feijoa sellowiana (O. Berg) O. Berg plants under the water stress

When assessing the drought tolerance of Feijoa sellowiana cultivars and forms, the total water content in leaf tissues and their waterretaining and regenerative capacity were determined, and the parameters of chlorophyll fluorescence induction were measured at different water content in leaves. Curr...

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Autores principales: Shishkina Elena, Gubanova Tatiyna, Titov Valerii
Formato: article
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FR
Publicado: EDP Sciences 2021
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Acceso en línea:https://doaj.org/article/1a7b7088c1f140edb90fff7d08fd1b88
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spelling oai:doaj.org-article:1a7b7088c1f140edb90fff7d08fd1b882021-11-08T15:17:37ZSome special features of the water regime and the photosynthetic apparatus activity in Feijoa sellowiana (O. Berg) O. Berg plants under the water stress2117-445810.1051/bioconf/20213800117https://doaj.org/article/1a7b7088c1f140edb90fff7d08fd1b882021-01-01T00:00:00Zhttps://www.bio-conferences.org/articles/bioconf/pdf/2021/10/bioconf_napd2021_00117.pdfhttps://doaj.org/toc/2117-4458When assessing the drought tolerance of Feijoa sellowiana cultivars and forms, the total water content in leaf tissues and their waterretaining and regenerative capacity were determined, and the parameters of chlorophyll fluorescence induction were measured at different water content in leaves. Current-year leaves were characterized by a higher sensitivity to drought. According to the complex of water regime parameters and characteristics of the chlorophyll fluorescence induction (CFI), it was found that the cultivar Aromatnaya Fantazia and the form 3/1 are characterized by a relatively high drought tolerance. It has been demonstrated that the common method for assessing plant tolerance by the index of their water-retaining forces, in relation to Feijoa sellowiana genotypes, does not allow determining the critical level of water deficit. It has been found that in the cultivars and forms with low water stress tolerance, with the water loss of 20-25% from the leaf tissues complete hydration, irreversible irregularities in the PS II structures occurred. The most sensitive to the lack of water in the leaves were such parameters as variable fluorescence, rate constants of the photochemical and non-photochemical deactivation of the excitation, as well as the processes of Qa reduction in the reaction centers of PS II.Shishkina ElenaGubanova TatiynaTitov ValeriiEDP SciencesarticleMicrobiologyQR1-502PhysiologyQP1-981ZoologyQL1-991ENFRBIO Web of Conferences, Vol 38, p 00117 (2021)
institution DOAJ
collection DOAJ
language EN
FR
topic Microbiology
QR1-502
Physiology
QP1-981
Zoology
QL1-991
spellingShingle Microbiology
QR1-502
Physiology
QP1-981
Zoology
QL1-991
Shishkina Elena
Gubanova Tatiyna
Titov Valerii
Some special features of the water regime and the photosynthetic apparatus activity in Feijoa sellowiana (O. Berg) O. Berg plants under the water stress
description When assessing the drought tolerance of Feijoa sellowiana cultivars and forms, the total water content in leaf tissues and their waterretaining and regenerative capacity were determined, and the parameters of chlorophyll fluorescence induction were measured at different water content in leaves. Current-year leaves were characterized by a higher sensitivity to drought. According to the complex of water regime parameters and characteristics of the chlorophyll fluorescence induction (CFI), it was found that the cultivar Aromatnaya Fantazia and the form 3/1 are characterized by a relatively high drought tolerance. It has been demonstrated that the common method for assessing plant tolerance by the index of their water-retaining forces, in relation to Feijoa sellowiana genotypes, does not allow determining the critical level of water deficit. It has been found that in the cultivars and forms with low water stress tolerance, with the water loss of 20-25% from the leaf tissues complete hydration, irreversible irregularities in the PS II structures occurred. The most sensitive to the lack of water in the leaves were such parameters as variable fluorescence, rate constants of the photochemical and non-photochemical deactivation of the excitation, as well as the processes of Qa reduction in the reaction centers of PS II.
format article
author Shishkina Elena
Gubanova Tatiyna
Titov Valerii
author_facet Shishkina Elena
Gubanova Tatiyna
Titov Valerii
author_sort Shishkina Elena
title Some special features of the water regime and the photosynthetic apparatus activity in Feijoa sellowiana (O. Berg) O. Berg plants under the water stress
title_short Some special features of the water regime and the photosynthetic apparatus activity in Feijoa sellowiana (O. Berg) O. Berg plants under the water stress
title_full Some special features of the water regime and the photosynthetic apparatus activity in Feijoa sellowiana (O. Berg) O. Berg plants under the water stress
title_fullStr Some special features of the water regime and the photosynthetic apparatus activity in Feijoa sellowiana (O. Berg) O. Berg plants under the water stress
title_full_unstemmed Some special features of the water regime and the photosynthetic apparatus activity in Feijoa sellowiana (O. Berg) O. Berg plants under the water stress
title_sort some special features of the water regime and the photosynthetic apparatus activity in feijoa sellowiana (o. berg) o. berg plants under the water stress
publisher EDP Sciences
publishDate 2021
url https://doaj.org/article/1a7b7088c1f140edb90fff7d08fd1b88
work_keys_str_mv AT shishkinaelena somespecialfeaturesofthewaterregimeandthephotosyntheticapparatusactivityinfeijoasellowianaobergobergplantsunderthewaterstress
AT gubanovatatiyna somespecialfeaturesofthewaterregimeandthephotosyntheticapparatusactivityinfeijoasellowianaobergobergplantsunderthewaterstress
AT titovvalerii somespecialfeaturesofthewaterregimeandthephotosyntheticapparatusactivityinfeijoasellowianaobergobergplantsunderthewaterstress
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