Karyotypen europ�ischer, perennierender Sippen der Gramineen-GattungAnthoxanthum

Teppner, Herwig

doi:10.1007/bf01377862

Cited by 15 publications

(16 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Diploid and tetraploid Anthoxanthimi alpinitm belong to the A. odoratum L. sensti lato polyploid complex. Karyological studies have shown that the two species differ in the shape of certain chromosomes that have a secondary constriction (Teppner, 1970). Morphologically, A. alpinum differs from A. odoratum in having a fertile lemma, which is scabrous in the former and smooth in the latter (Eelber, 1987a).…”

Section: Cytotype Characterizationmentioning

confidence: 99%

Habitat differentiation in a narrow hybrid zone between diploid and tetraploid Anthoxanthum alpinum

1996

View full text Add to dashboard Cite

summary Populations of diploid and autotetraploid Anthoxanthum alpinum A. & D. Löve formed a narrow hybrid zone in a study area in the Swiss Prealps. Detailed vegetation analyses were performed along transects in several contact zones between the two cytotypes. The vegetation differed according to the position in the hybrid zone. When considering the hybrid zone as a whole, and for one transect that was analysed in detail, there was strong evidence for habitat segregation between the cytotypes. Vegetation transitions, habitat preference and segregation of the two cytotypes differed according to location in the hybrid zone. The origin and dynamics of the hybrid zone are discussed.

show abstract

Section: Cytotype Characterizationmentioning

confidence: 99%

Habitat differentiation in a narrow hybrid zone between diploid and tetraploid Anthoxanthum alpinum

1996

View full text Add to dashboard Cite

show abstract

“…Analysis of the karyotypes allowed Teppner (1970) to recognize not two but four cytodemes for A. odoratum s. lat.…”

Section: Introductionmentioning

confidence: 99%

“…Whereas the autoploidal origin of tetraploid A. alpinum is not in dispute (Hedberg, 1970;Teppner, 1970), that of tetraploid A. odoratum is still under discussion. Booher (1961), Borril (1963), Jones (1964) and Teppner (1970) believe thatA. odoratum is an allotetraploid derived from a cross between A. alpinum and another diploid taxon.…”

Section: Introductionmentioning

confidence: 99%

SENSITIVITY OF THE FOUR CYTODEMES OF ANTHOXANTHUM ODORATUM L. S. LAT. (POACEAE) TO PUCCINIA SARDONENSIS GÄUMANN (UREDINALES)

Felber¹

1987

TAXON

View full text Add to dashboard Cite

Summary Attempts to infect the four cytodemes of Anthoxanthum odoratum L. s. lat. (Poaceae) with Puccinia sardonensis Gäumann (Uredinales) were successful with half the individuals of A. alpinum A. & D. Löve (diploid and tetraploid) but not with those of A. odoratum s. str. (diploid and tetraploid). For each cytodeme, the sensitivity to the parasite was not dependent on the origin of the material and no correlation was established between the distribution of the rust and that of susceptible individuals. Susceptibility and resistance to P. sardonensis would therefore probably be long‐established characteristics which originated at the time of differentiation of the two diploid taxa of A. odoratum s. str. and of A. alpinum but which preceded their respective polyploidization phases. Resistance to infection would have no adaptive value since resistant A. odoratum is not exposed to infection in nature and probably never has been. These results support the division of A. odoratum s. lat. into A. alpinum and A. odoratum. Résumé Des essais d'infection des quatre cytodèmes d'Anthoxanthum odoratum L. s. lat. (Poaceae) par Puccinia sardonensis Gäumann (Urédinée) réussissent sur la moitié des individus d'A. alpinum A. & D. Löve (diploïde et tétraploïde) mais jamais sur ceux d'A. odoratum s. str. (diploïde et tétraploïde). Pour chaque cytodème, la sensibilité au parasite est indépendante de l'origine du matériel et aucune corrélation n'a été établie entre la distribution de la rouille et celle des individus sensibles. La susceptibilité et la résistance à P. sardonensis représenteraient done des caractères anciens dont l'apparition serait contemporaine de la différentiation des deux taxons diploïdes d'A odoratum s. str. et d'A alpinum mais antérieure à leurs phases respectives de polyploïdisation. La résistance à l'infection n'aurait pas de valeur adaptative puisque A. odoratum résistant n'est pas exposé à l'infection dans la nature et ne l'a vraisemblablement jamais été. Ces résultats témoignent de l'indépendance taxonomique d'A alpinum et d'A. odoratum.

show abstract

“…Later it was assigned by Hedberg (1986) to A. odoratum. Also, Hedberg (1970) was the first to report the existence of two karyotypes in tetraploid A. odoratum, confirmed by Teppner (1970).…”

Section: Introductionmentioning

confidence: 98%

Relationships Among Some Populations of Anthoxanthum alpinum and A. odoratum (Poaceae, Pooideae): a Morphological/Anatomical Approach

Pimentel¹,

Sahuquillo²

2007

aliso

View full text Add to dashboard Cite

The genus Anthoxanthum s.l. (including Hierochloë) (Poaceae, Pooideae, Aveneae) comprises 35-50 species and has a cosmopolitan distribution. Anthoxanthum alpinum was described as a diploid perennial that is distributed in northern Eurasia and in the high mountains of central and eastern Europe. Difficulties in finding reliable morphological differences between this taxon and the widespread tetraploid A. odoratum have resulted in taxonomists treating them as conspecific, despite the cytological differentiation. The purpose of this study was to provide information that may help clarify the relationships between these taxa. Macromorphologial, micromorphological, and anatomical data were gathered and analyzed for 14 populations representing both taxa from Scandinavia and the Iberian Peninsula. Statistical analyses were carried out to identify the most useful characters for taxonomy. The relationships among samples were based on different similarity coefficients and summarized using UPGMA clustering methods. The results show that geography has more statistical weight than ploidy level in explaining the relatedness among individuals and populations. A strong correlation between leaf micromorphological/anatomical characters and environmental parameters was detected. The results of the analyses do not support recognition of A. alpinum as a distinct species.

show abstract

Karyotypen europ�ischer, perennierender Sippen der Gramineen-GattungAnthoxanthum

Cited by 15 publications

References 3 publications

Habitat differentiation in a narrow hybrid zone between diploid and tetraploid Anthoxanthum alpinum

Habitat differentiation in a narrow hybrid zone between diploid and tetraploid Anthoxanthum alpinum

SENSITIVITY OF THE FOUR CYTODEMES OF ANTHOXANTHUM ODORATUM L. S. LAT. (POACEAE) TO PUCCINIA SARDONENSIS GÄUMANN (UREDINALES)

Relationships Among Some Populations of Anthoxanthum alpinum and A. odoratum (Poaceae, Pooideae): a Morphological/Anatomical Approach

Contact Info

Product

Resources

About