نتایج جستجو برای: نقشهیابی qtl

تعداد نتایج: 8581  

2016
Lianguang Shang Lingling Ma Yumei Wang Ying Su Xiaocui Wang Yuhua Li Abdugheni Abduweli Shihu Cai Fang Liu Kunbo Wang Jinping Hua

Plant height, which shows dynamic development and heterosis, is a major trait affecting plant architecture and has an indirect influence on economic yield related to biological yield in cotton. In the present study, we carried out dynamic analysis for plant height and its heterosis by quantitative trait loci (QTL) mapping at multiple developmental stages using two recombinant inbred lines (RILs...

Journal: :Genetics 2004
Chi Zhang Dirk-Jan De Koning Jules Hernández-Sánchez Chris S Haley John L Williams Pamela Wiener

A whole-genome scan was conducted to map quantitative trait loci (QTL) for BSE resistance or susceptibility. Cows from four half-sib families were included and 173 microsatellite markers were used to construct a 2835-cM (Kosambi) linkage map covering 29 autosomes and the pseudoautosomal region of the sex chromosome. Interval mapping by linear regression was applied and extended to a multiple-QT...

Journal: :Genetics research 2008
Suzanne J Rowe Ricardo Pong-Wong Christopher S Haley Sara A Knott Dirk-Jan De Koning

Dominance is an important source of variation in complex traits. Here, we have carried out the first thorough investigation of quantitative trait locus (QTL) detection using variance component (VC) models extended to incorporate both additive and dominant QTL effects. Simulation results showed that the empirical distribution of the test statistic when testing for dominant QTL effects did not be...

Journal: :Agriculture 2023

This paper proposes the use of weighted multiple linear regression to estimate triple3interaction (additive×additive×additive) quantitative trait loci (QTLs) effects. The unweighted yielded an improvement (in absolute value) in QTL×QTL×QTL interaction effects compared assessment based on phenotypes alone three cases (severe drought 2010, control 2012 and severe 2012). In contrast, evaluation aa...

حسن زینالی عباس رضایی‌زاد عباسعلی زالی محسن مردی ولی‌الله محمدی

  به منظور مکان‌یابی QTL های عملکرد و اجزای عملکرد کلزا در شرایط آبیاری معمول و تنش خشکی، 135 رگه هاپلویید مضاعف کلزا حاصل تلاقی بین یک لاین زمستانه فرانسوی (Darmo-Bzh) و یک لاین بهاره کره‌ای (Yudal) مورد ارزیابی قرار گرفتند. نقشه لینکاژی نوزده کروموزوم کلزا به کمک 459 نشانگر مولکولی شامل نشانگرهای آیزوزیم، RFLP ، RAPD ، SSR ، NSP و AFLP ترسیم شد. بر اساس روش مکان‌یابی فاصله‌ای مرکب مجموعاً تعدا...

Journal: :علوم دامی ایران 0
غلامرضا داشاب دکتری ژنتیک و اصلاح دام-دانشگاه زابل علی اصغر اسلمی نژاد استادیار د انشگاه فردوسی مشهد محمدرضا نصیری دانشیار دانشگاه علی اسماعیل زاده کشکوئیه دانشیار باهنرکرمان داود علی ساقی عضو هیئت علمی

regions on three ovine chromosomes (oar1, oar5 and oar25) were selected to study quantitative trait loci (qtl) segregating for wool traits in baluchi sheep. a total of 503 progeny from 13 half-sib families were genotyped for 15 microsatellite markers. the average number of progeny per sire was 38 and ranged between 16 and 59. data were collected from research centre on baluchi breed in 2009 and...

Journal: :Genetics 2002
Theo H E Meuwissen Astrid Karlsen Sigbjørn Lien Ingrid Olsaker Mike E Goddard

A novel and robust method for the fine-scale mapping of genes affecting complex traits, which combines linkage and linkage-disequilibrium information, is proposed. Linkage information refers to recombinations within the marker-genotyped generations and linkage disequilibrium to historical recombinations before genotyping started. The identity-by-descent (IBD) probabilities at the quantitative t...

Journal: :Genetics 2010
Xin Chen Fuping Zhao Shizhong Xu

Environment-specific quantitative trait loci (QTL) refer to QTL that express differently in different environments, a phenomenon called QTL-by-environment (Q × E) interaction. Q × E interaction is a difficult problem extended from traditional QTL mapping. The mixture model maximum-likelihood method is commonly adopted for interval mapping of QTL, but the method is not optimal in handling QTL in...

Journal: :Genetics 2006
Julian K Christians Andreas Hoeflich Peter D Keightley

Identifying genes responsible for quantitative variation remains a major challenge. We previously identified a quantitative trait locus (QTL) affecting body size that segregated between two inbred strains of mice. By fine mapping, we have refined the location of this QTL to a genomic region containing only four protein-coding genes. One of these genes, PAPPA2, is a strong candidate because it c...

Journal: :Plant, cell & environment 2008
Jianjun Zhao Diaan C L Jamar Ping Lou Yanhua Wang Jian Wu Xiaowu Wang Guusje Bonnema Maarten Koornneef Dick Vreugdenhil

Phytate, being the major storage form of phosphorus in plants, is considered to be an anti-nutritional substance for human, because of its ability to complex essential micronutrients. In the present study, we describe the genetic analysis of phytate and phosphate concentrations in Brassica rapa using five segregating populations, involving eight parental accessions representing different cultiv...

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