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Morphological and Anatomical Characterization of Solidago × niederederi and OtherSympatric Solidago Species

Published online by Cambridge University Press:  20 January 2017

Birutė Karpavičienė*
Affiliation:
Institute of Botany, Nature Research Centre Akademijos 2, 08412 Vilnius, Lithuania
Jolita Radušienė
Affiliation:
Institute of Botany, Nature Research Centre Akademijos 2, 08412 Vilnius, Lithuania
*
Corresponding author's E-mail: birute.karpaviciene@botanika.lt

Abstract

Two species of invasive goldenrods, Solidago canadensis and Solidago gigantea, are spread over all territories ofLithuania. Solidago × niederederi, a putative hybridbetween S. canadensis and native Solidago virgaurea, was found in 27 populations mixed with the parentalspecies. This research represents the characterization of S. × niederederi in comparison to the other mentioned Solidago species, with the use of one-way analysis ofvariance (ANOVA), principal-components analysis (PCA), and discriminantanalysis of a large data set. Twenty quantitative, four qualitative, andfive ratio morphological and anatomical characteristics, pollen viability,and somatic chromosome numbers of the four Solidago specieswere studied with the aim to ascertain inter- and intraspecific variationand reliable features identifying S. × niederederi, and totest the hypothesized hybrid origin. The PCA of morphological and anatomicalcharacteristics showed the clear intermediate position of S. × niederederi compared to S. canadensis and S. virgaurea. The results showed that the mostinformative characteristics for the distinction of hybrids from parentalspecies are floral traits such as the lengths of the disc, ray florets, andinvolucre. The intermediate stomatal characteristics and sharply decreasedpollen viability discovered herein could potentially be used as anadditional discriminating character in Solidago hybrididentification and support the hybrid origin of S. × niederederi.

Information

Type
Weed Biology and Ecology
Copyright
Copyright © Weed Science Society of America 

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