scholarly journals Thladiantha dubia Bunge as an invasively dangerous species in Ukraine

2021 ◽  
pp. 183-188
Author(s):  
T. M. Kostruba ◽  
G. A. Chorna ◽  
T. V. Mamchur
Keyword(s):  
Invasive Species ◽  
Vegetative Propagation ◽  
Dioecious Plant ◽  
Thladiantha Dubia ◽  
Univer Sity ◽  
Cucurbitaceae Family

The distribution of a potentially invasive species from the Cucurbitaceae family — Thladiantha dubia is considered in Ukraine. The current significant increase in the distribution of the species in many regions of Ukraine has been clarified. It was established that the species was introduced in Uman in 1964. It was found that due to vegetative propagation the species spread beyond the primary introduction site in the botanical nursery of Uman National Univer- sity of Horticulture and around it. The absence of generative reproduction in the analyzed introductory population was established, as there are only male specimens of this dioecious plant. Measures to prevent further spread of Thladiantha dubia are recommended.

scholarly journals In vivo callus formation on the surface of tubers of Manchu tubergourd (Thladiantha dubia, Cucurbitaceae)

2020 ◽  
Author(s):  
D. Yu. Shvets ◽  
B. R. Kuluev
Keyword(s):  
Invasive Species ◽  
Vegetative Propagation ◽  
Callus Formation ◽  
Wide Distribution ◽  
Thladiantha Dubia ◽  
First Time

For the first time, shingles of callus-like structures were found in Thladiantha dubia. Of these formations, shoots and roots are intensively regenerated in vivo. Such a mechanism underlies the active vegetative propagation and wide distribution of this invasive species.

scholarly journals Reduced pollen viability and achene development in Solidago ×niederederi Khek from Poland

2014 ◽  
Vol 83 (3) ◽  
pp. 251-255 ◽  
Author(s):  
Grzegorz Migdałek ◽  
Jolanta Kolczyk ◽  
Artur Pliszko ◽  
Maria Kościńska-Pająk ◽  
Aneta Słomka
Keyword(s):  
Invasive Species ◽  
Vegetative Propagation ◽  
Interspecific Hybrid ◽  
High Frequency ◽  
Seed Set ◽  
Parental Species ◽  
Pollen Viability ◽  
Viable Pollen ◽  
Ne Poland ◽  
Potential Impact

Pollen and achene characters of natural interspecific hybrid <em>Solidago</em> ×<em>niederederi</em> Khek were analyzed and compared with putative parental species <em>S. virgaurea</em> L. and <em>S. canadensis</em> L. to estimate the level of disturbances in generative reproduction resulting from its hybrid nature. Pollen viability (stainability) of <em>Solidago</em> ×<em>niederederi</em> from one newly discovered locality in NE Poland was evidently reduced to ~65% in both viability tests (acetocarmine and Alexander). The diameter of viable pollen (median 21.11 µm) fell between <em>S. canadensis</em> (median 19.52 µm) and <em>S. virgaurea</em> (median 23.48 µm). Both parental species produced normally developed achenes with high frequency (~90%) whereas in the hybrid, the seed set was dramatically low (6%). The results clearly indicated that sexual reproduction of hybridogenous taxon <em>S.</em> ×<em>niederederi</em> is disturbed, and its potential impact as an invasive species depends mainly on vegetative propagation.

Invasive Shot Hole Borers Euwallacea fornicatus, E. kuroshio, and E. perbrevis (Coleoptera: Curculionidae: Scolytinae)

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. 7
Author(s):  
Demian F. Gomez ◽  
Jiri Hulcr ◽  
Daniel Carrillo
Keyword(s):  
South Africa ◽  
Invasive Species ◽  
Prevention And Control ◽  
Economic Impacts ◽  
Forest Resources ◽  
Economic Damage ◽  
Ambrosia Beetles ◽  
Invasive Insects ◽  
The World ◽  
And Control

Invasive species, those that are nonnative and cause economic damage, are one of the main threats to ecosystems around the world. Ambrosia beetles are some of the most common invasive insects. Currently, severe economic impacts have been increasingly reported for all the invasive shot hole borers in South Africa, California, Israel, and throughout Asia. This 7-page fact sheet written by Demian F. Gomez, Jiri Hulcr, and Daniel Carrillo and published by the School of Forest Resources and Conservation describes shot hole borers and their biology and hosts and lists some strategies for prevention and control of these pests. http://edis.ifas.ufl.edu/fr422

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