Germination requirements of invasive and non-invasive Atriplex species: a comparative study

Mandák, Bohumil

doi:10.1078/0367-2530-00075

Cited by 65 publications

(81 citation statements)

References 44 publications

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“…Flowers are borne in terminal and axillary inflorescences. They are dimorphic and produce three types of fruits differing both morphologically (mainly in colour and presence/absence of bracteoles), and ecologically (Kopecky´and Lhotska´, 1990;Manda´k, 1997Manda´k, , 2003Manda´k and Holmanova´, 2004;Manda´k and Pysˇek, 1998, 1999a, 2001a:…”

Section: Study Speciesmentioning

confidence: 99%

How does seed heteromorphism influence the life history stages of Atriplex sagittata (Chenopodiaceae)?

Mandák

̆ek

2005

Flora - Morphology, Distribution, Functional Ecology of Plants

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Section: Study Speciesmentioning

confidence: 99%

How does seed heteromorphism influence the life history stages of Atriplex sagittata (Chenopodiaceae)?

Mandák

̆ek

2005

Flora - Morphology, Distribution, Functional Ecology of Plants

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“…As a candidate character for adaptation, we selected the seed germination requirement, because it is expected to be critical both in survival during long-distance transport and in adaptation to different climates. Rapid and high germination rates have often been associated with invasiveness (Baker 1974;Radford and Cousens 2000;Manda´k 2003), but it has been reported that invasive species do not necessarily show rapid and high germination rates (Manda´k 2003;Milbau et al 2003). Furthermore, only a few studies really compared seed germination characteristics between invasive and native populations (Erfmeier and Bruelheide 2005).…”

Section: Introductionmentioning

confidence: 99%

Does invasion involve alternation of germination requirements? A comparative study between native and introduced strains of an annual Brassicaceae, Cardamine hirsuta

Kudoh

Nakayama

Lihová

et al. 2007

Ecological Research

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Cardamine hirsuta is a European annual weed that has been naturalized in Japan. Although the species is a widespread weed in Europe, its introduction to the Japanese Islands occurred recently. We hypothesized that the introduction of Cardamine hirsuta required adaptation that has delayed its spread in Japan. The aim of this study is to determine whether there is a difference in temperature requirements for seed germination between Japanese and European strains of Cardamine hirsuta. We compared temperature requirements for seed germination, because it is known to be a critical determinant of phenology and thus is expected to be important in the success of introduction into different climates. Seeds of six and five strains from Japan and Europe, respectively, were used in seed germination experiments under five different temperature regimes. Japanese strains generally showed stronger initial seed dormancy and were characterized by suppressed germination in higher temperature regimes. European strains showed variable patterns of temperature‐dependent seed germination. It turned out that these temperature‐dependent dormancies are mediated by abscisic acid (ABA), because dormant seeds germinated under the presence of an inhibitor of ABA synthesis. Seed germination characteristics shared by Japanese strains presumably enhance long transport and autumn germination, while these characteristics are not necessarily common among European strains. The results are supportive for the idea that adaptation has altered germination characteristics of Cardamine hirsuta through the introduction process into Japan.

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“…Alien species on the way of their expansion might meet congenerous species. Few investigations deal with comparisons of geographically close relatives, local and alien ones like in the cases of genera Atriplex (Mandak, 2003) and Medicago (Vyšniauskienė et al, 2013). …”

Section: Introductionmentioning

confidence: 99%

Comparison of genetic diversity of three Impatiens species from Central Europe and Baltic region

Kupčinskienė

Zybartaitė

Paulauskas

2015

Zemdirbyste-Agriculture

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The present study is aimed at evaluation of genetic diversity of populations of three Impatiens species from two countries by employing multilocus markers of two different types. The total number of individuals was 355, the number of populations for each species -native Impatiens noli-tangere and invasive -I. parviflora, I. glandulifera, was 8 (4 from Lithuania and 4 from the Czech Republic). Impatiens species were evaluated according to 8 randomly amplified polymorphic DNA (RAPD) loci and 5 inter-simple sequence repeat (ISSR) loci. Independently of the site, at the species level polymorphism was the highest for I. glandulifera at RAPD loci (35.2%, as a mean per population) and for I. noli-tangere at ISSR loci (48%). RAPD and ISSR based dendrograms for individuals and populations also principal coordinate analyses clearly clustered populations of each species according to their countries, except for ISSR based dendrogram for the populations of I. noli-tangere. Estimated at ISSR loci, molecular variance among the populations of the two countries was much smaller for native I. noli-tangere (7.3%), when compared to invasive I. parviflora (49.7%) or I. glandulifera (45.6%). Genetic differentiation among the populations was the smallest for I. noli-tangere (G ST = 0.36). The populations of both invasive species from the Czech Republic were more polymorphic at ISSR loci, when compared to those from Lithuania. Mantel test showed significant correlations between geographic and genetic distances in the case of both DNA markers. The Czech Republic's populations were bigger in size, grew in higher altitudes, mean annual temperatures of the site were higher by several degrees and mean annual rainfall was lower compared to Lithuania's. Polymorphisms at RAPD and ISSR loci might play different role for viability of populations of Impatiens species. ISSR markers were more useful for the assessment of genetic differences between native and invasive Impatiens species.

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Germination requirements of invasive and non-invasive Atriplex species: a comparative study

Cited by 65 publications

References 44 publications

How does seed heteromorphism influence the life history stages of Atriplex sagittata (Chenopodiaceae)?

How does seed heteromorphism influence the life history stages of Atriplex sagittata (Chenopodiaceae)?

Does invasion involve alternation of germination requirements? A comparative study between native and introduced strains of an annual Brassicaceae, Cardamine hirsuta

Comparison of genetic diversity of three Impatiens species from Central Europe and Baltic region

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