<abstract xmlns="http://www.w3.org/1999/xhtml">

<p><italic>Salix</italic> is a genus of considerable taxonomic complexity, and accurate identification of its species and hybrids is not always possible. Quantification of ovules was used in this study to verify the parentage of a few hybrids of <italic>Salix</italic>. It has been shown that ovule numbers in willow hybrids are the mean of the ovule numbers of their parents. The ovule index of a prostrate specimen of <italic>S. ×cottetii</italic> affirmed that this was a hybrid of <italic>S. myrsinifolia</italic> Salisb. and <italic>S. retusa</italic> L., and the ovule index of the ornamental cultivar ‘The Hague’ affirmed that this was a hybrid of <italic>S. caprea</italic> L. and <italic>S. gracilistyla</italic> Miq. Finally, we also examined a confusing group, previously identified in North America as <italic>S. pentandra</italic>. The ovule indexes and other morphological characters indicated that there were four taxa among the studied specimens: <italic>S. pentandra</italic>, <italic>S. ×meyeriana</italic>, <italic>S. serissima</italic> Fernald, and a hybrid of <italic>S. serissima</italic> and <italic>S. fragilis</italic> that has not previously been described. It was concluded that quantification of ovules in willows is a reliable tool that can be used in willow taxonomy, genetics and population studies.</p>
</abstract>

Salix is a genus of considerable taxonomic complexity, and accurate identification of its species and hybrids is not always possible. Quantification of ovules was used in this study to verify the parentage of a few hybrids of Salix. It has been shown that ovule numbers in willow hybrids are the mean of the ovule numbers of their parents. The ovule index of a prostrate specimen of S. ×cottetii affirmed that this was a hybrid of S. myrsinifolia Salisb. and S. retusa L., and the ovule index of the ornamental cultivar ‘The Hague’ affirmed that this was a hybrid of S. caprea L. and S. gracilistyla Miq. Finally, we also examined a confusing group, previously identified in North America as S. pentandra. The ovule indexes and other morphological characters indicated that there were four taxa among the studied specimens: S. pentandra, S. ×meyeriana, S. serissima Fernald, and a hybrid of S. serissima and S. fragilis that has not previously been described. It was concluded that quantification of ovules in willows is a reliable tool that can be used in willow taxonomy, genetics and population studies.

Identification of hybrid formulae of a few willows (<italic>Salix</italic>) using ovule numbers

Silvae Genetica

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Identification of hybrid formulae of a few willows () using ovule numbers

Salix is a genus of considerable taxonomic complexity, and accurate identification of its species and hybrids is not always possible. Quantification of ovules...

Identification of hybrid formulae of a few willows (Salix) using ovule numbers

Published Online: Apr 30, 2021

Page range: 75 - 83

DOI: https://doi.org/10.2478/sg-2021-0006

Keywords
Salix ×cottetii, Salix ‘The Hague’, Salix ×meyeriana, taxonomy, ovary

© 2021 Аlexander M. Marchenko et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Identification of hybrid formulae of a few willows (Salix) using ovule numbers

Published Online: Apr 30, 2021

Page range: 75 - 83

DOI: https://doi.org/10.2478/sg-2021-0006

KeywordsSalix ×cottetii, Salix ‘The Hague’, Salix ×meyeriana, taxonomy, ovary

© 2021 Аlexander M. Marchenko et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Salix ×cottetii, Salix ‘The Hague’, Salix ×meyeriana, taxonomy, ovary