Is Salix fursaevii Mavrodiev (Salicaceae) a palaeoendemic of the Volga River valley or an ecotype of S. triandra L.?
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Resource type
Journal article
Date published
October 10, 2022
Abstract
Salix fursaevii, a species endemic to the Volga River flood plain, was described by E. Mavrodiev and co-authors in Byull. Moskovsk. Obshch. Isp. Prir. in 2012. It differs from the closely related and widespread S. triandra by a few quantitative morphological characters and, most of all by its much later flowering time. This late-flowering willow was known and studied before as an ecotype of S. triandra. Our study of a large sample of S. triandra s. l. revealed that 1) S. triandra s. str. and S. fursaevii could not be clearly distinguished using several morphological characters and the time of flowering; 2) specimens morphologically corresponding to S. fursaevii are with a single exception strictly confined to the Volga River flood plain; 3) the populations of S. triandra and S. fursaevii do not differ by nrITS sequences; 4) the populations of S. triandra and S. fursaevii are poorly differentiated by chloroplast atpB-rbcL sequences; 5) representatives of both taxa are tetraploids 2n = 4x = 76. Poor differentiation of populations by chloroplast sequences is indicative of the intraspecific variability, the geographic pattern of which suggests that the Volga River valley was a probable glacial refugium and a source of post glacial spread of S. triandra.
Project(s)
Priority 4: Accelerated Taxonomy
Priority 5: Enhanced Partnerships
Priority 2: Trait Diversity and Function
Funder
| Funder name | Awards |
Russian Foundation for Basic Research | Grant no. 19-04-01308 |
Ministry of Science and Higher Education, Russia | Center for Collective Use "Herbarium of the GBS RAS", Grant no. 075-15-2021-678 |
Journal title
Turczaninowia
Volume
23
Issue
3
Publisher
Altai State University
Place of publication
Barnaul, Russia
ISSN
1560-7259
eISSN
1560-7267
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In Copyright
Additional information
IF = 0.704 (2021-2022)