Temat: intraspecific variation - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The variability of reed [Phragmites australis [Cav.] Trin. ex Steud. [Poaceae]] populations expressed in morphological traits of panicles
Autorzy:: Krzakowa, M
Kolodziejczak, M.
Drapikowska, M.
Jakubiak, H.
Powiązania:: https://bibliotekanauki.pl/articles/57623.pdf
Data publikacji:: 2003
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: Phragmites australis
variability
morphological trait
reed
Poaceae
intraspecific variation
panicle morphology
population
Odra River
plant
Opis:: Using a transect technique, each of 12 reed Phragmites australis (Cav.) Trin ex Steud. populations collected in middle part of Odra River-basin, represented by more than 30 plants, were compared with 3 populations from other part of the country and 1 from France. Each panicle was examined according to 15 morphological traits. Results of measurements were subjected to multivariate analysis of variance, to analysis of canonical variables and used for construction of a minimum spanning tree (= dendrite) on the basis of the shortest Mahalanobis distances. The obtained results indicate that populations are generally similar. One population from France (Orleans) shows visible separateness. It may suggest that morphological traits of panicles may be useful in investigations of the reed P. australis populations of a larger geographical distribution.
Źródło:: Acta Societatis Botanicorum Poloniae; 2003, 72, 2
0001-6977
2083-9480
Pojawia się w:: Acta Societatis Botanicorum Poloniae
Dostawca treści:: Biblioteka Nauki

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Tytuł:: Biosystematic studies of Elymus repens [L.] Gould [Poaceae]: patterns of phenotypic variation
Autorzy:: Szczepaniak, M
Powiązania:: https://bibliotekanauki.pl/articles/56840.pdf
Data publikacji:: 2009
Wydawca:: Polskie Towarzystwo Botaniczne
Tematy:: intraspecific variability
taxonomy
perennial grass
morphometry
Poaceae
Elymus repens
Triticum repens zob.Elymus repens
phenotypic variation
Opis:: Inter- and intrapopulational morphological variability of Elymus repens, a cool-season peren-nial grass and a tenacious weed that spreads both by seeds and rhizomes forming a thick and stout net, was examined. Multivariate statistical analysis of 48 initial morphological characters obtained from 44 population samples (1180 specimens) collected in different habitats revealed the conspicuous variation within E. repens. Principal Component Analysis revealed three extremes of the morphological gradient that were referred to as three varieties of E. repens: var. repens, var. aristatus and var. subulatus, not correlated with the habitat type or geographi-cal location. Canonical Discriminant Analysis proved the taxonomic usefulness of characters such as awned or awnless glumes and lemmas as well as the shape of glumes for variety di-stinction. Results of morphological analysis, in relation to the low level of genetic variation showed in the previous studies, suggest that the extensive morphological variation of E. re-pens can be caused by its plasticity where different morphological patterns are realized on the same genome basis. Additionally, the open-pollinated system of mating results in new combi-nations of morphological characters of plants that further reproduce vegetatively by rhizomes. The nomenclature, taxonomic descriptions and a key to the three varieties are provided.
Źródło:: Acta Societatis Botanicorum Poloniae; 2009, 78, 1; 51-61
0001-6977
2083-9480
Pojawia się w:: Acta Societatis Botanicorum Poloniae
Dostawca treści:: Biblioteka Nauki

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