E3S Web Conf.
Volume 254, 2021International Scientific and Practical Conference “Fundamental and Applied Research in Biology and Agriculture: Current Issues, Achievements and Innovations” (FARBA 2021)
|Number of page(s)||7|
|Section||Mechanisms of Adaptation, Methods of its Regulation in Plants|
|Published online||05 May 2021|
Study of frost resistance of generative buds of scion/ rootstock combinations of sweet cherry by freezing in controlled conditions
FSBSI “Federal Horticultural Research Center for Breeding, Agrotechnology and Nursery”, Moscow, Russia
* Corresponding author: firstname.lastname@example.org
The paper presents the results of two-year research on frost resistance study in 18 scion/rootstock combinations of sweet cherry: Fatezh and Chermashnaya varieties grafted on 9 rootstocks (Izmailovsky, AVCH-2, V-5-88, VC-13, Moskoviya, VSL-2, Stepnoy Rodnik, Colt and seedling rootstock Prunus magaleb L.). The research was carried out in 2019-2020 in the laboratory of physiology and biochemistry of FSBSI «Federal Horticultural Research Center for Breeding, Agrotechnology and Nursery» by artificial freezing method in the climate chamber TH-6 JEIO TECH -1000. It was established that after freezing at t = - 29ºC, the floral rudiments' preservation in the Fatezh variety was more than 80%, and in the Chermashnaya variety — about 40%. Limits of frost resistance change of varieties' reproductive buds depending on the rootstock were shown: Fatezh variety — from 62.2% (VSL-2) to 81.7% (Izmailovsky), and Chermashnaya variety — from 25.5% (P. magaleb L) to 65% (Izmailovsky). When using Izmailovsky and AVCH-2 clone rootstock, the preservation of flower rudiments increased by 15 -20% compared to P. magaleb L. The most frost-resistant scion/rootstock combinations were revealed: Fatezh/Izmailovsky and Fatezh/AVCH-2, which preserved more than 87% of live rudiments. A positive correlation between floral buds' frost resistance and chlorogenic acid content has been established.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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