نتایج جستجو برای: phenotypic traits

تعداد نتایج: 150592  

2017
Albert Barberán Hildamarie Caceres Velazquez Stuart Jones Noah Fierer

Cultivation in the laboratory is essential for understanding the phenotypic characteristics and environmental preferences of bacteria. However, basic phenotypic information is not readily accessible. Here, we compiled phenotypic and environmental tolerance information for >5,000 bacterial strains described in the International Journal of Systematic and Evolutionary Microbiology (IJSEM) with all...

Journal: :Proceedings on Privacy Enhancing Technologies 2015

رشیدی, امیر, زندی باغچه مریم, محمدباقر, شیخ احمدی, محمد, مرادی شهربابک, محمد, میرایی آشتیانی, سید رضا,

  Genetic and phenotypic parameters for body and yearling fleece weigh traits were estimated based on 4008 records. Records gathered across year 1993 to 2007 in the Markhoz goat research stations in Saghez and Sanandaj. Parameters were estimated using univariate and bivariate animal model with restricted maximum like lihood ASREML software. Mean (standard error of means) of birth weight (BW), w...

2014
Huange Wang Fred A. van Eeuwijk

In the context of genetics and breeding research on multiple phenotypic traits, reconstructing the directional or causal structure between phenotypic traits is a prerequisite for quantifying the effects of genetic interventions on the traits. Current approaches mainly exploit the genetic effects at quantitative trait loci (QTLs) to learn about causal relationships among phenotypic traits. A req...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2002
Loren H Rieseberg Alex Widmer A Michele Arntz John M Burke

Selection is widely accepted as the principal force shaping phenotypic variation within populations. Its importance in speciation and macroevolution has been questioned, however, because phenotypic differences between species or higher taxa sometimes appear to be nonadaptive. Here, we use the quantitative trait locus (QTL) sign test to evaluate the importance of directional selection in phenoty...

Journal: :The Plant cell 2014
Dijun Chen Kerstin Neumann Swetlana Friedel Benjamin Kilian Ming Chen Thomas Altmann Christian Klukas

Significantly improved crop varieties are urgently needed to feed the rapidly growing human population under changing climates. While genome sequence information and excellent genomic tools are in place for major crop species, the systematic quantification of phenotypic traits or components thereof in a high-throughput fashion remains an enormous challenge. In order to help bridge the genotype ...

2004
G. P. BROWN R. SHINE D. K. Skelly

Do reproducing female reptiles adaptively manipulate phenotypic traits of their offspring by selecting appropriate nest sites? Evidence to support this hypothesis is indirect, mostly involving the distinctive characteristics of used (vs. available) nest sites, and the fact that physical conditions during egg incubation can modify hatchling phenotypic traits that plausibly might influence fitnes...

Journal: :Journal of animal science 2013
N K Pickering H T Blair R E Hickson K G Dodds P L Johnson J C McEwan

Genetic and phenotypic parameters were estimated for dagginess, breech, wool, and fiber traits from approximately 29,500 progeny born in 2009 and 2010 in New Zealand dual-purpose ram breeding sheep flocks. Dagginess is adherence of fecal matter to the wool, and this study investigates the genetic and phenotypic correlations between dagginess and breech and wool traits. Estimates for heritabilit...

2009
Sarah E Reece Ricardo S Ramiro Daniel H Nussey

Adaptive phenotypic plasticity in life history traits, behaviours, and strategies is ubiquitous in biological systems. It is driven by variation in selection pressures across environmental gradients and operates under constraints imposed by trade-offs. Phenotypic plasticity has been thoroughly documented for multicellular taxa, such as insects, birds and mammals, and in many cases the underlyin...

2014
V. Zink L. Zavadilová J. Lassen M. Štípková M. Vacek L. Štolc

Genetic and phenotypic correlations between production traits, selected linear type traits, and somatic cell score were estimated. The results could be useful for breeding programs involving Czech Holstein dairy cows or other populations. A series of bivariate analyses was applied whereby (co)variance components were estimated using average information (AI-REML) implemented via the DMU statisti...

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