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2 edition of Molecular variation in populations of Betula L.. found in the catalog.

Molecular variation in populations of Betula L..

Diane E. Howland

Molecular variation in populations of Betula L..

by Diane E. Howland

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  • 30 Currently reading

Published by University of East Anglia in Norwich .
Written in English


Edition Notes

Thesis (Ph.D.), University of East Anglia, School of Biological Sciences, 1992.

ID Numbers
Open LibraryOL21507262M

The genus Desmodium contains ca. species, distributed in Eastern Asia, Mexico, and Brazil, with 40 endemic species in Mexico, including Desmodium sumichrastii (Schinder) Standley. Randomly amplified polymorphic DNA (RAPD) variation was used to assess genetic variation within and among five populations of D. sumichrastii from west-central Mexico, constituting .   Birches (Betula L., Betulaceae) have been known to hybridize between species (Erikkson & Jonsson ).Introgression between tetraploid and diploid species through triploids was confirmed in Iceland based on morphological, cytological and molecular evidence (Thorsson et al. ).Extensive introgression of chloroplast haplotypes was found among three .

  Correlation between air pollution and concentrations of low molecular mass phenolics (LMMP) was studied in young and mature birch leaves (Betula pubescens Ehrh.) in trees growing at different distances from Harjavalta copper-nickel smelter, SW trations of low molecular mass phenolics were determined by analytical HPLC. Ecological genetics is the study of genetics in natural populations. Traits in a population can be observed and quantified to represent a species adapting to a changing environment. This contrasts with classical genetics, which works mostly on crosses between laboratory strains, and DNA sequence analysis, which studies genes at the molecular level.

A new record of Betula litwinowii (Betulaceae) and a review of the geographical distribution of the genus Betula L. in Iran. Iranian Journal of Botany – Zeng J., Zou Y., Bai J., Zheng H. (). RAPD analysis of genetic variation in natural populations of Betula alnoides from Guangxi, China. Euphytica 33– Birches (Betula L., Betulaceae) have been known to hybridize between species (Erikkson & Jonsson ). Introgression between tetraploid and diploid species through triploids was confirmed in Iceland based on morphological, cytological and molecular evidence (Thorsson et .


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Molecular variation in populations of Betula L. by Diane E. Howland Download PDF EPUB FB2

Molecular population genetics aims to explain genetic variation and molecular evolution from population genetics principles. The field was born 50 years ago with the first measures of genetic variation in allozyme loci, continued with the nucleotide sequencing era, and is currently in the era of population genomics.

During this period, molecular population Cited by:   Background and Aims Betula L. (birch) is a genus of approx. 60 species, subspecies or varieties with a wide distribution in the northern hemisphere, of ecological and economic importance. A new classification of Betula has recently been proposed based on morphological characters.

This classification differs somewhat from previously published molecular Cited by: Durand EY, Patterson N, Reich D, Slatkin M. Testing for ancient admixture between closely related populations. Molecular Biology and Evolution. ; – [PMC free article] Elkington TT. Introgressive hybridization between Betula nana L.

and B. pubescens Ehrh. in North-West Iceland. New Phytologist. ; –Cited by: Molecular variation in populations of Betula L. Author: Howland, Diane E.

ISNI: Awarding Body: University of East Anglia Current Institution: University of East Anglia Date of Award: Availability of Full Text: Full text unavailable from EThOS. Molecular variation in populations of Betula L.

Howland DE. Dissertation from University of East Anglia, 21 Jul ETH: Share this article Share with email Share with twitter Share with linkedin Share with facebook. Abstract. No abstract provided. Full text links. Free to read at EThOS.

Population History, Genetic Variation and Conservation Status of the Endangered Birch Species Betula nana L. in Poland Article (PDF Available) in Silva Fennica 46(4). The paper presents data on the ecological and phytocoenotic conditions of habitats of the G.

conopsea (L.) R. orchid in the Northeast of European Russia (Komi Republic, Russia). The data include characteristics of the populations of this species on the northern border of its range (size and ontogenetic structure of the populations, density of specimens, phenology), as well.

Birch trees inhabiting the high-altitude Hyrcanian forest (the southern shores of the Caspian Sea of Iran and Azerbaijan) are classified in the EN (endangered) category of the International Union for Conservation of Nature (IUCN).

Taxonomic status and phylogenetic relationship of Iranian populations, molecular taxonomy, and biogeography of the genus Betula.

The mountain birch, Betula pubescens ssp. tortuosa is a tetraploid tree species which forms the tree limit in northern Fennoscandia. We identified nine polymorphic microsatellite loci. We analysed individuals of B. humilis from 19 populations and 67 specimens of Betula pendula and Betula pubescens sampled in four geographical regions in Poland and Belarus for polymorphism in.

Population and molecular datasets for Gymnadenia conopsea (Orchidaceae) complex of G. conopsea s.l. included in the Red Data Book Patterns of ploidy variation among and within populations. Evolutionary forces shape the patterns of genetic diversity that vary greatly within and among species and populations (Small et al.,Vieira and Charlesworth, ), and the adaptation at the molecular level can be detected by genetic evidence of the past positive selection (Yang and Bielawski,Jobson et al., ).

Genetic variation in adjacent Nordic populations of Acer platanoides L. and Betula pendula Roth was assessed by allozymes and in growth and. Molecular marker technology is an important tool for genomic studies, and the polymorphism of markers can reflect the same and discrepant features among individuals or populations at a certain level [8,9,10].Simple sequence repeat (SSR) markers are widely used in population genetics and molecular marker assisted breeding, such as genome-wide association study.

1. Introduction. Forest genetic resources of noble hardwood species are threatened by harvesting and habitat destruction (Eriksson, ).Knowledge of the genetic diversity and genetic structure is a prerequisite for managing and conserving populations of these tree species (Hamrick et al.,Williams and Hamrick,Geburek, ).Stand.

Molecular analysis of Betula papyrifera populations from a mining reclaimed region: genetic and transcriptome characterization of metal resistant and susceptible genotypes by Gabriel Theriault A thesis submitted in partial fulfillment of the requirements for the degree of Doctor (PhD) in Biomolecular Sciences The Faculty of Graduate Studies.

Analysis of molecular data showed significant dissimilarities between population. High level of variation within population was also detected, possibly as a consequence of the multiclonal composition of the populations but might also be due to mutations occurring over time (chromosomal aberrations, aneuploidy, polyploidy etc) which have been.

White birch (Betula papyrifera) is an open pollinate species that is, dominant in the Northern Ontario after land fact, this species represents 65% of all trees in the region. We hypothesized that the exchange of genetic information between fragmented populations by range-wide paternal introgression is possible in wind-pollinated species such as B.

papyrifera. Betula humilis is an endangered plant species in Central Europe. In order to protect this species, it is necessary to document its genetic diversity in this region and to identify areas for conservation prioritisation.

As molecular investigations conducted throughout the ranges of many plant species have shown that the highest genetic diversities are found within. INTRODUCTION. Morphological variation in birch (Betula L.) is known to be extensive, due in part to frequent hybridization in this genus (Woodworth, ; Johnsson, ; Walters, ; Furlow, ).This has made taxonomy of Betula problematic.

However, there are generally acknowledged to be two species of tree birch in most of Europe: silver birch (B. pendula Roth. Katarzyna A. Jadwiszczak, Stanisław Kłosowski, Iwona Zalewska, Agata Banaszek, Agnieszka Chrzanowska.

Genetic diversity and sexual reproduction in relict populations of Betula nana. Jadwiszczak K.A., Kłosowski S., Zalewska I., Banaszek A., Chrzanowska A.

(). Genetic diversity and sexual reproduction in relict populations of Betula Fennica vol. 51. Plant growth and herbivore resistance is affected by both environmental and genetic factors. The aim of this study was to examine (1) whether genotype explains variation in herbivore resistance, plant growth and tolerance of feeding within natural silver birch populations, (2) whether there is significant interaction between birch genotype and .Genetic diversity enrichment is urgently necessary to develop climate-resilient faba bean cultivars.

The present study aimed to measure the enrichment of genetic diversity and changes in the population structure of faba bean, following induced mutagenesis. samples, including M2 mutant plants, generated by exposing the ILB accession to four mutagen treatments .