Original scientific paper

https://doi.org/10.2478/botcro-2013-0020

Morphological variation of Lactuca serriola L. achenes as a function of their geographic origin

Křístková Eva ; Palacký University in Olomouc, Faculty of Science, Department of Botany, Czech Republic
Aleš Lebeda ; Palacký University in Olomouc, Faculty of Science, Department of Botany, Czech Republic
Alžbeta Novotná ; Palacký University in Olomouc, Faculty of Science, Department of Botany, Czech Republic
Ivana Doležalová ; Palacký University in Olomouc, Faculty of Science, Department of Botany, Czech Republic
Tomaš Berka ; Podlesí 5411, 760 01 Zlín, Czech Republic

Abstract

The morphological characteristics of achenes of Lactuca serriola represented by 34 local populations from Slovenia and 12 local populations from Sweden were studied in relation to their eco- geographical conditions. In total, eight quantitative morphological characters were evaluated: length and width of achene body; index length/width of achene body; number of ribs on achene body; length of beak; length of pappus bristles; pappus area and discus diameter. NestedANOVAanalysis indicated significant differences in length and width of achene body, length of pappus bristles, and pappus area between Slovenian and Swedish populations. Achenes from Slovenia were longer, wider and possessed longer pappus bristles than achenes from Sweden. Among geographical factors, latitude had the greatest impact on the morphological characters evaluated. Significant differences in seven parameters were also found between populations within countries and between samples within populations. It is probable that this variation has a genetic basis with sufficient variation
within populations to permit continued selection.

Keywords

Achen; Lactuca serriola; eco-geographical conditions; fruit; morphology; pappus; wind-dispersed diaspore

Hrčak ID:

118943

URI

https://hrcak.srce.hr/118943

Publication date:

1.4.2014.

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