نتایج جستجو برای: rye introgression

تعداد نتایج: 7336  

2017
David A Turissini Daniel R Matute

The process of speciation involves populations diverging over time until they are genetically and reproductively isolated. Hybridization between nascent species was long thought to directly oppose speciation. However, the amount of interspecific genetic exchange (introgression) mediated by hybridization remains largely unknown, although recent progress in genome sequencing has made measuring in...

Journal: :Molecular ecology 2014
Yin Qi Bin Lu Haiyan Gao Ping Hu Jinzhong Fu

Mitochondrial genome (mito-genome) introgression among metazoans is commonplace, and several biological processes may promote such introgression. We examined two proposed processes for the mito-genome introgression between Rana chensinensis and R. kukunoris: natural hybridization and sex-biased dispersal. We sampled 477 individuals from 28 sites in the potential hybrid zone in the western Tsinl...

Journal: :iranian journal of allergy, asthma and immunology 0
akefeh ahmadiafshar department of pediatrics, aayatollah mousavi hospital, zanjan university of medical sciences, zanjan, iran and metabolic research center of zanjan university of medical sciences mina maarefvand department of pediatrics, aayatollah mousavi hospital, zanjan university of medical sciences, zanjan, iran babak taymourzade department of pediatrics, aayatollah mousavi hospital, zanjan university of medical sciences, zanjan, iran saeedeh mazloomzadeh metabolic research center of zanjan university of medical sciences and department of medical statistics, medical faculty, zanjan university of medical sciences, zanjan, iran zohreh torabi department of pediatrics, aayatollah mousavi hospital, zanjan university of medical sciences, zanjan, iran

specific local immunotherapy has been recently introduced as an alternative to classic subcutaneous immunotherapy in treatment of allergic rhinitis. in this study, the effects of sublingual immunotherapy (slit) on symptoms and medication score and skin prick test evaluation of patients with allergic rhinitis were investigated. in this placebo controlled trial, twenty four patients aged 5-18 yea...

The recent years' problems of herbicide use have led a growing number of researchers to seek alternative methods that are less reliant on herbicides. This research was conducted to determine the effect of long-term crop rotation, mineral fertilizer and herbicide on the weed infestation and grain yield of winter rye during 2004 and 2005 at the long-term experimental site of the University of Tim...

2011
Frank E. rhEindt Scott V. EdwardS

The Auk, Vol. 128, Number 4, pages 620−632. ISSN 0004-8038, electronic ISSN 1938-4254.  2011 by The American Ornithologists’ Union. All rights reserved. Please direct all requests for permission to photocopy or reproduce article content through the University of California Press’s Rights and Permissions website, http://www.ucpressjournals. com/reprintInfo.asp. DOI: 10.1525/auk.2011.128.4.620 3...

2016
Kathryn R. Ritz Mohamed A. F. Noor

Measures of genetic divergence have long been used to identify evolutionary processes operating within and between species. However, recent reviews have described a bias in the use of relative divergence measures towards incorrectly identifying genomic regions that are seemingly immune to introgression. Here, we present a novel and opposite bias of relative divergence measures: misidentifying r...

Journal: :The Journal of animal ecology 2011
John F Benson Jeffrey A Hostetler David P Onorato Warren E Johnson Melody E Roelke Stephen J O'Brien Deborah Jansen Madan K Oli

1. Inbreeding and low genetic diversity can cause reductions in individual fitness and increase extinction risk in animal populations. Intentional introgression, achieved by releasing genetically diverse individuals into inbred populations, has been used as a conservation tool to improve demographic performance in endangered populations. 2. By the 1980s, Florida panthers (Puma concolor coryi) h...

Journal: :Systematic biology 2012
J Melo-Ferreira P Boursot M Carneiro P J Esteves L Farelo P C Alves

Understanding recent speciation history requires merging phylogenetic and population genetics approaches, taking into account the persistence of ancestral polymorphism and possible introgression. The emergence of a clear phylogeny of hares (genus Lepus) has been hampered by poor genomic sampling and possible occurrence of mitochondrial DNA (mtDNA) introgression from the arctic/boreal Lepus timi...

2000
Xiaomin Zhou Chandra A. Madramootoo Angus F. MacKenzie Donald L. Smith

Concern about NO− 3 leaching and groundwater pollution from corn monoculture has prompted an investigation of alternative production systems that reduce leaching. It is hypothesized that both intercropping and water-table control could increase N uptake and reduce the quantity of N that might be lost due to leaching. This study compared corn (Zea mays L.) with annual Italian rye-grass (Lolium m...

2017
Hannah N Phillips Bradley J Heins Kathleen Delate Robert Turnbull

Meat from Holstein and crossbred organic dairy steers finished on winter rye and winter wheat pastures was evaluated and compared for meat quality, fatty acid and amino acid profiles, and consumer acceptability. Two adjacent 4-ha plots were established with winter rye or winter wheat cover crops in September 2015 at the University of Minnesota West Central Research and Outreach Center (Morris, ...

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