Guide to the genus Rubus L. (Rosaceae) in South Africa - Disentangling a taxonomic Gordian knot with the help of ploidy and reproductive data

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F22%3A10175184" target="_blank" >RIV/00027006:_____/22:10175184 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61989592:15310/22:73613003

Výsledek na webu

<a href="https://www.sciencedirect.com/journal/south-african-journal-of-botany/vol/147/suppl/C" target="_blank" >https://www.sciencedirect.com/journal/south-african-journal-of-botany/vol/147/suppl/C</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.sajb.2022.01.044" target="_blank" >10.1016/j.sajb.2022.01.044</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Guide to the genus Rubus L. (Rosaceae) in South Africa - Disentangling a taxonomic Gordian knot with the help of ploidy and reproductive data

Popis výsledku v původním jazyce

Rubus is notorious for its taxonomic complexity. Although some light has been recently shed on the taxonomy of the species from the Greater Cape Floristic Region in South Africa, many questions remain unanswered. This contribution is based on extensive field and herbarium studies across South Africa and aims at clarifying Rubus taxonomy in the region with the help of DNA-ploidy estimation and assessment of reproductive mode. We dis-tinguish a total of 18 taxa from the region, of which six are native. Furthermore, the two native species R. pinnatus and R. ludwigii exhibit geographic variation that can be treated at the level of subspecies, and the new combination R. pinnatus subsp. pappei is provided. We do not recognise any infraspecific taxa in the widely dis-tributed sexual hexaploid R. rigidus. All of the taxa are described and are photographically documented. Several other taxa were found only as solitary inadequate specimens and need further study. Moreover, 12 primary hybrids were identified, of which seven were derived from hybridization between native and alien species. Contrary to previous reports, each of the species exhibited a single ploidy level, and hybrids were, with one or two exceptions, intermediate between the parents in their ploidy. Whereas native taxa are strictly sexual, most polyploid aliens reproduce by facultative apomixis and hybrids are mostly sterile or sexual. However, apomixis was detected in R. sect. Arguti x R. pinnatus and R. bergii x R. thaumasius.

Název v anglickém jazyce

Guide to the genus Rubus L. (Rosaceae) in South Africa - Disentangling a taxonomic Gordian knot with the help of ploidy and reproductive data

Popis výsledku anglicky

Rubus is notorious for its taxonomic complexity. Although some light has been recently shed on the taxonomy of the species from the Greater Cape Floristic Region in South Africa, many questions remain unanswered. This contribution is based on extensive field and herbarium studies across South Africa and aims at clarifying Rubus taxonomy in the region with the help of DNA-ploidy estimation and assessment of reproductive mode. We dis-tinguish a total of 18 taxa from the region, of which six are native. Furthermore, the two native species R. pinnatus and R. ludwigii exhibit geographic variation that can be treated at the level of subspecies, and the new combination R. pinnatus subsp. pappei is provided. We do not recognise any infraspecific taxa in the widely dis-tributed sexual hexaploid R. rigidus. All of the taxa are described and are photographically documented. Several other taxa were found only as solitary inadequate specimens and need further study. Moreover, 12 primary hybrids were identified, of which seven were derived from hybridization between native and alien species. Contrary to previous reports, each of the species exhibited a single ploidy level, and hybrids were, with one or two exceptions, intermediate between the parents in their ploidy. Whereas native taxa are strictly sexual, most polyploid aliens reproduce by facultative apomixis and hybrids are mostly sterile or sexual. However, apomixis was detected in R. sect. Arguti x R. pinnatus and R. bergii x R. thaumasius.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

South African Journal of Botany

ISSN

0254-6299

e-ISSN

—

Svazek periodika

147

Číslo periodika v rámci svazku

JUL 2022

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

57

Strana od-do

511-567

Kód UT WoS článku

000781103600001

EID výsledku v databázi Scopus

2-s2.0-85124717007