Infraspecific morphological and genome size variations in Linum glaucum in Iran

Abstract

There are many discussions about taxonomic position of Linum glaucum in different Flora. In this study, the morphological traits associated with the nuclear genome size were used for identification of infraspecific variations in the nine populations of L. glaucum. Twenty three qualitative and quantitative morphological characteristics were investigated. The Analysis of variance tests showed significant difference for some morphological features. The Canonical Correspondence Analysis of habitat ecological factors showed that each of the habitats had prominent characteristics, and also Pearson's coefficient of correlation confirmed the significant correlations between the morphological features in relation to ecological factors. In the morphological Unweighted Paired Group using Average method tree, populations were separated from each other, so that population No. 4 was separated from others. In the flow cytometery investigations, variation of about 1.19 times was presented between the maximum and minimum averages of the genome sizes in the populations. Minimum amount of genome size was found in populations No. 4. Significant correlations occurred between the nuclear genome size with habitat elevation as well as some of the quantitative morphological features. The mentioned variations caused to difference between the populations and lead to creation of ecotype and ecophene in the studied populations.

Pollen morphology of endemic Linum species (Linoideae: Linaceae) from Mexico

“…The pollen morphology of the species studied here, as well as in previous works (Saad 1961;Erdtman 1966;Xavier 1967;Ockendon 1971;Rogers and Xavier 1971;Rogers 1980Rogers , 1982Rogers , 1985Chester and Raine 2001;Perveen and Qaiser 2008;Lattar et al 2012;Talebi et al 2012;Kluza-Wieloch et al 2015, is accompanied by a variety in floral and fruit morphology within the genus (Xavier et al 1980). Diversification among Linum species in North America, as opposed to those in South America, is mainly attributed to the biogeographical and ecological conditions where they thrive, but also to their evolutionary history (McDill et al 2009;McDill and Simpson 2011;Ruiz-Mart ın et al 2018).…”

“…However, the multivariate statistical analyses defined the degree of importance of these traits in pollen variation, grouping those species that display narrow similarities in pollen morphology and identifying significant differences in three of the 11 species. The application of multivariate statistical analysis was not reported in previous studies on the pollen morphology of Linum (Saad 1961;Erdtman 1966;Xavier 1967;Ockendon 1971;Rogers and Xavier 1971;Rogers 1980Rogers , 1982Rogers , 1985Chester and Raine 2001;Perveen and Qaiser 2008;Lattar et al 2012;Talebi et al 2012;Kluza-Wieloch et al 2015. Therefore, the present work is one of the first efforts to strengthen the conclusions derived from the study of the pollen morphological traits in Linum.…”

“…Although palynological work in Linum has been carried out since the 1950s worldwide (Saad 1961;Erdtman 1966;Xavier 1967;Ockendon 1971;Rogers and Xavier 1971;Rogers 1980Rogers , 1982Rogers , 1985Chester and Raine 2001;Perveen and Qaiser 2008;Lattar et al 2012;Talebi et al 2012;Kluza-Wieloch et al 2015, none of these publications includes a comprehensive report on pollen morphology, and there are no studies addressing all species of the genus. As a result, the characteristics of many species of the genus Linum, including the Mexican species, remain unknown.…”

Bayesian and Multivariate Analyses of combined molecular and morphological data in Linum austriacum (Linaceae) populations: Evidence for infraspecific taxonomic groups

“…In order to adaptation to these conditions, different morphological traits of L. austriacum adapted to ecological factors of habitat, therefore morphological variations occurred between populations. Infraspecific studies on various species of this genus or other genera such as Linum album (Talebi et al 2014 a), Linum glaucum (Talebi et al 2015) as well as Stachys inflata (Talebi et al 2014b) confirmed these findings. Abhar,2.…”

Infra-generic morphological variations in some Nepeta L. taxa of Iran

“…Link. (Talebi, 2015) Stachys inflate (Talebi et al, 2014a) and also species of other families, for example Linaceae (Afshar et al, 2015). Different reasons were proposed for infra-specific morphological variations, such as creation of ecotype or ecophene.…”