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2013 | 61 | 4 |
Tytuł artykułu

Seed mass variation in Central European populations of invasive Impatiens glandulifera Royle

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Języki publikacji
Positive correlation between seed weight and germination capacity is common for the vast majority of species. It is also known that seed weight can vary along a latitudinal gradient. The seed mass of the invasive Himalayan balsam (Impatiens glandulifera), which is native to East Asia, was examined in relation to distinct geographical regions in Poland (Bielsko-Biala: N49°52′32″, E18°57′43″; Katowice: N50°12′8.3″, E18°57′26″; Tworków: N50°01′22″, E18°15′28”); Hungary (Rum: N47°06′41″, E16°50′45″; Rábahídvég: N47°03′54″, E16°44′59″) and Germany (Halle: N51°28′47″, E11°57′12″; Marburg: N50°48′32″, E8°46′31″). The study revealed that seed mass varied both among the countries and among specific populations within Poland and Germany. In Hungary, the 50 seed lots were the lightest 0.29 g and 0.31 g in respective localities and the heaviest in single populations in Poland – 0.61 g and in Germany – 0.57 g. In the present study, populations located more southwards had the lightest seeds in contrast to the commonly encountered pattern. Higher temperature, lower precipitation and as a consequence, a shortage of water can be crucial factors that affect the seed mass of I. glandulifera. Taking into account the lower frequency and abundance of the species in Hungary, the lower seed mass may probably contribute to the limited distribution range in this region.
Opis fizyczny
  • Institute of Engineering and Environmental Protection, Faculty of Materials and Environmental Sciences, University of Bielsko-Biala, Willowa 2, 43–309 Bielsko–Biala, Poland
  • Institute for Soil Sciences and Agricultural Chemistry, Centre for Agricultural Research, Hungarian Academy of Sciences, Herman O. ut 15, Budapest, H–1022, Hungary
  • Department of Plant Systematics, Faculty of Biology and Environmental Protection, Jagiellonska 28, 40–032 Katowice, Poland
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