Results 11 to 20 of about 211,250 (391)

A Guide to QTL Mapping with R/qtl [PDF]

Journal of Statistical Software, 2009
Importing and simulating data.- Data checking.- Single-QTL analysis.- Non-normal phenotypes.- Experimental design and power.- Working with covariates.- Two-dimensional, two-QTL scans.- Fit and exploration of multiple-QTL models.- Case study I.- Case ...
Qing Zhou
semanticscholar   +4 more sources

R/qtl: high-throughput multiple QTL mapping [PDF]

Bioinformatics, 2010
AbstractMotivation: R/qtl is free and powerful software for mapping and exploring quantitative trait loci (QTL). R/qtl provides a fully comprehensive range of methods for a wide range of experimental cross types. We recently added multiple QTL mapping (MQM) to R/qtl.
Arends, D., Prins, J.C.P., Jansen, R.C., Broman, K.   +3 more
openaire   +3 more sources

Genomewide Mapping of Selection Signatures and Genes for Extreme Feather Pecking in Two Divergently Selected Laying Hen Lines

Animals, 2020
Feather pecking (FP) is a longstanding serious problem in commercial flocks of laying hens. It is a highly polygenic trait and the genetic background is still not completely understood.
Hanna Iffland, Robin Wellmann, Markus Schmid, Siegfried Preuß, Jens Tetens, Werner Bessei, Jörn Bennewitz   +6 more
doaj   +1 more source

Multiple QTL for horticultural traits and quantitative resistance to Phytophthora infestans linked on Solanum habrochaites chromosome 11. [PDF]

, 2014
Previously, a Phytophthora infestans resistance QTL from Solanum habrochaites chromosome 11 was introgressed into cultivated tomato (S. lycopersicum). Fine mapping of this resistance QTL using near-isogenic lines (NILs) revealed some co-located QTL with ...
Haggard, J Erron, Johnson, Emily B, St Clair, Dina A   +2 more
core   +1 more source

اثر تعداد و توزیع اثرات QTL بر صحت پیش‌بینی‌های ژنومی برخی روش‌های آماری در یک صفت آستانه‌ای [PDF]

پژوهشهای علوم دامی ایران, 2017
هدف این مطالعه استفاده از شبیه‌ سازی تصادفی برای محاسبه ارزش‌های اصلاحی ژنومی در سناریوهایی با تعداد و توزیع مختلف آماری برای اثرات QTL در یک صفت آستانه‌ای با استفاده از روش‌های بیزیA، B، C، L و R بود. برای شبیه سازی سناریوهای مختلف، ابتدا یک نسل پایه با
صاحب فروتنی فر
doaj   +1 more source

Seeing the wood for the trees: hyperspectral imaging for high throughput QTL detection in raspberry, a perennial crop species

Fruit Research, 2021
Physiological and physical traits are excellent indicators of many crop characteristics, but precise phenotyping of these traits is time consuming and, therefore, limits progress in crop breeding and the speed of crop monitoring.
Dominic Williams, Christine A. Hackett, Alison Karley, Susan McCallum, Kay Smith, Avril Britten, Julie Graham   +6 more
doaj   +1 more source

Sensitivity of methods for estimating breeding values using genetic markers to the number of QTL and distribution of QTL variance [PDF]

, 2010
The objective of this simulation study was to compare the effect of the number of QTL and distribution of QTL variance on the accuracy of breeding values estimated with genomewide markers (MEBV).
Albart Coster, John WM Bastiaansen, Mario PL Calus, Johan AM van Arendonk, Henk Bovenhuis, LR Schaeffer, THE Meuwissen, M Calus, MPL Calus, M Goddard, T Solberg, JA Sved, W Muir, TR Solberg, B Hayes, H Daetwyler, A De Roos, B Efron, T Park, S de Jong, S Datta, G Moser, A Coster, R Development Core Team, JF Crow, T Hastie, R Wehrens, B Grisart, M Mele, J Jeon, MN Weedon, DF Gudbjartsson, G Lettre, BJ Hayes, L Grapes, N Wray, DS Falconer   +36 more
core   +2 more sources

Copulas in QTL Mapping [PDF]

Behavior Genetics, 2004
The standard variance components method for mapping quantitative trait loci is derived on the assumption of normality. Unsurprisingly, statistical tests based on this method do not perform so well if this assumption is not satisfied. We use the statistical concept of copulas to relax the assumption of normality and derive a test that can perform well ...
Basrak, B., Klaassen, C.A.J., Beekman, M., Martin, N., Boomsma, D.   +4 more
openaire   +4 more sources

Bayesian multi-QTL mapping for growth curve parameters [PDF]

, 2010
Background Identification of QTL affecting a phenotype which is measured multiple times on the same experimental unit is not a trivial task because the repeated measures are not independent and in most cases show a trend in time. A complicating factor is
Heuven, H.C.M., Janss, L.L.G.
core   +3 more sources

Single nucleotide polymorphism markers with applications in aquaculture and assessment of its impact on natural populations

Aquatic Living Resources, 2018
An increase in aquatic animal production can be achieved by extending aquaculture areas geographically, utilizing new species for culture, and using new technologies.
Wenne Roman
doaj   +1 more source