Matthias Baltisberger's research while affiliated with Eawag: Das Wasserforschungs-Institut des ETH-Bereichs and other places

... Seeds are dispersed in July. It is a diploid species with chromosome number 2n = 16 (Májovský et al. 1974, Dobea & Hahn 1997. Biogeographically, it is an Illyrian species, i.e. belongs to the group of species with a distribution centre in the northwestern Balkan Peninsula. ...

... There are high diversity and differences in chromosomal length characteristics of the inter and intraspecies of this genus Fig. 3, 4. Given that the existence of diversity and difference in chromosome length indicates an advanced karyotype and has chromosomes in different sizes (Afshari et al. 2013), the species of this genus have advanced karyotypes. The existence of x=9 as the base chromosome number on the yarrow genus has been proven in several reports, yet the number of chromosomes and ploidy levels vary among different species of this genus, which could range from 2n=2x= 18 to 2n=8x=72 even though most species are Diploid ( Guo et al. 2005, Baltisberger andWidmer 2016). In addition to inter-species diversity in ploidy levels, there are numerous reports of ploidy level diversity in populations within a species. ...

... Нативный ареал вида -восток Северной Америки (Frey et al., 2003), инвазионный ареал включает Северную Америку, Европу, Японию, Корею, Новую Зеландию (Виноградова и др., 2010;Lambdon et al., 2008). Растение массово распространено в Средней России, отмечено на юге Дальнего Востока, в Новосибирской области (Баркалов, 1992; Виноградова и др., 2010; ...

... Polyploidy is common and differences in ploidy levels can occur even within species (Küpfer, 1974;Baltisberger, 1981;Huber, 1988;Baack, 2005;Hörandl et al., 2005). Karyotypes vary considerably within the genus and even non-closely related species can interbreed, at least under experimental conditions (Goepfert, 1974;Vuille and Küpfer, 1985;Baack, 2004;Baltisberger, 2005). For this reason, hybridization and polyploidy may play an important role in the speciation and evolutionary process of Ranunculus. ...

... Chromosomes serve as the carriers of genetic information, and alterations in their number and structure play a crucial role in plant evolution (Escudero et al., 2014). Chromosomal characteristics, including number, size, and shape (karyotype), serve as defining features for numerous plant taxa across different taxonomic levels (Baltisberger and Hörandl, 2016). In the genus Allium, a basic chromosome number of x=8 is predominant, although a few sections exhibit x=7, 9, and 11 (Friesen et al., 2006). ...

... The valley is U-shaped with the northeast-and southwest-facing slopes being steep. Climate is continental (Baltisberger et al., 2013) with a mean annual temperature of − 2.2 • C and a mean annual precipitation of 1200 mm (climate reference period 1961-1990, refer to chapter 2.4). The land cover is currently dominated by rock (37%) and loose rock (40%). ...

... Environmental association studies have formerly concentrated on the correlation between genetic and geographic distances to analyze IBD, while more recent studies also incorporate multiple environmental variables with a main focus on environmental gradients (e.g., climatic-, elevation-, environmental-and habitat gradients) with climatic variables being the most commonly used (Gerber et al. 2004;Nahum et al. 2008;Nakazato et al. 2008;Manel et al. 2012;Jones et al. 2013;Gray et al. 2014;Harter et al. 2015). Environmental association studies by means of climatic variables generally comprise temperature and precipitation that over large geographic distances normally change simultaneously. ...

... Ranunculus L. is the largest genus of Ranunculaceae and one of the 50 largest angioperm genera, with a worldwide distribution and around 600 herbaceous species (Tamura 1995, Frodin 2004, Cires et al. 2014). The majority of species are found in temperate to arctic/ subantarctic zones; nonetheless, the genus exhibits significant variety in the Mediterranean (Paun et al. 2005). ...

... It is an apomictic plant, producing large numbers of minute seeds that are genetically identical to the mother plant. Thus, it can maintain the dominant performance of the mother plant for a long time, and its genetic diversity is reduced within populations; however, most populations contain several dominant genotypes, suggesting that sexual reproduction does occur occasionally (Edwards et al., 2006;Trtikova et al., 2011;Ma and Li, 2018). Owing to its strong apomictic reproductive ability and rapid dispersal, it can invade local ecosystems across broad anthropogenic habitats in China, particularly grasslands and farmlands (Wang et al., 2010;Liu et al., 2022). ...

... Jammu and Kashmir holds a significant portion of Kashmir Himalayas, a rich biodiversity hot-spot of the planet with immense diversity of aromatic and medicinal flora (Khuroo et al. 2007;Hanson et al. 2009). Aconitum heterophyllum an endemic perennial medicinal plant from Western Himalayas is distributed at an altitude of 2500 to 4000 m (Utelli et al. 2000). Among the 300 species of genus Aconitum found globally, 24 species are reported from India (Beigh et al. 2006). ...