Page 154 - Zbornik_Konf_2019

https://doi.org/10.15414/2019.9788055220703

4 International Scientific Conference Abstracts Book
th
PHENOLOGICAL GROWTH STAGES OF THE DIOSPYROS VIRGINIANA L.

Yulia Zhabrovets , Alla Kustovska , Olga Grygorieva
1
2
1
1 National Pedagogical Dragomanov University, Kyiv, Ukraine; E-mail.: additive@ukr.net
2 M.M. Gryshko National Botanical Garden of the National Academy of Sciences of Ukraine,
Kyiv, Ukraine
Species of the genus Diospyros spp. belong to the family Ebenaceae Gürke. In Europe, the
considerable interest of national economy to constitute such kinds of as: Diospyros kaki L.
(Japanese persimmon) and Diospyros virginiana L. (American persimmon), fruit plants as
food, Diospyros lotus L. (Date plum) – as rootstock, Diospyros virginiana – as a rootstock and as
a source of high winter hardiness at the hybridization. The natural range of Diospyros
virginiana includes the eastern part of North America from Connecticut to Iowa and from
Kansas to Florida. Today more than 200 cultivars of Diospyros virginiana exist and their fruits
have differences in fruits shape, size, color, and ripening. The Diospyros virginiana is of great
practical interest for fruit growing. In addition, the American persimmon is a valuable
decorative and medicinal plant. For the last years was derived good cultivars of Diospyros
virginiana and some of them are superior the best cultivars of Diospyros kaki.
Climate change and other adverse global factors in each region have a significant effect
on the cultivation of plant species. It is, therefore, necessary to gradually introduce and test
the adaptation of less-known and less-used plant species for different practical uses in each
region. In Ukraine conditions, the Diospyros virginiana is being tested for a longer period of
time. In order to recognize the adaptation of each species, it is necessary to know, inter alia
the phenology of the species.
The aim of the study was the determination of the main phenological growth stages of
Diospyros virginiana in the conditions of M.M. Gryshko National Botanical Garden of NAS of
Ukraine (Kyiv). For the study of the issue, we used 12 individuals produced in the Botanical
Garden. Experimental data gained in years 2018–2019 in phenological studies of Diospyros
virginiana were utilized to describe phenological growth stages of given species. For the
description of phenological growth stages, it was used by BBCH Monograph (1997).
Phenological observations and time data collection were provided at regular intervals in the
text form and photo documentation. Complex phenological growth stages were processed
based on the phenological records. Resulting data will be used for the list of descriptors
preparation specified for the given species and oriented on the practical utilization in the
research, breeding, and genetic resources investigation. A feature of the system is that
homologous stages of different crops are presented by the same codes.
This study made it possible to accurately identify and describe the phenological stages of
perspiration growth of Diospyros virginiana from the growth bud development (stage 0) and
ending with the senescence. Beginning of dormancy (stage 9). The stage of bud development
(stage 0) and the stage of inflorescence emergence (stage 5) are described most fully. This
makes it possible to use the advantages of the extended BBCH scale to describe the fruit crops
for further research.

Keywords: Diospyros virginiana, BBCH-code, growth stage.

Acknowledgments
The publication was prepared with the active participation of researchers in international network
AgroBioNet, as a part of the international program 'Agricultural Biodiversity to Improve Nutrition,
Health and Quality of Life', within the project ITEBIO-ITMS 26220220115 'Support of Technologies
Innovation for Special Bio-Food Products for Human Healthy Nutrition' and National Scholarship
Programme of the Slovak Republic and Polish National Commission for UNESCO.

|154 4 International Scientific Conference Agrobiodiversity Nutrition, Health and Quality of Human and Bees Life
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September 11–13, 2019