نتایج جستجو برای: شناسایی qtl
تعداد نتایج: 88546 فیلتر نتایج به سال:
در بررسی مولکولی 96 لاین f3 با 32 پرایمر چند شکل ژنوتیپ یابی انجام شد. و نقشه لینکاژی جمعیت با مجموع طول 3/1351 سانی مورگان ترسیم گردید. برای اندازه گیاهچه، ارتفاع، وزن سنبله اصلی، وزن دانه در سنبله اصلی، تعداد دانه در سنبله اصلی، تعداد سنبلچه، تعداد کل دانه، پنجه بارور، ، تعداد میانگره، طول میانگره، در مجموع جمعا 17 qtl برای تحمل به شوری یافت شد که در مجموع 13 qtl بر روی کروموزوم d7 و 3 qtl بر...
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 undesirable effects on plant size, canopy density, and fruit size traits. Subsequently, higher-resolution mapping with sub-NILs detected multip...
صفات مرتبط با رشد حیوانات اهلی، به دلیل ارتباط مستقیمی که با سود اقتصادی دارند از اهمیت بالایی برخوردار می باشند. بلدرچین ژاپنی (coturnix coturnix japonica) یکی از گونه های طیور است که تاکنون در زمینه های تحقیقاتی و اقتصادی مورد استفاده قرار گرفته است. همچنین بررسی خصوصیات ژنتیکی این پرنده نیز در طی چندین پژوهش انجام گرفته است. اما، پژوهش های ژنومی اندکی برای یافتن جایگاه های موثر بر صفات کمی (...
Selection on quantitative trait loci (QTL) may vary among natural environments due to differences in the genetic architecture of traits, environment-specific allelic effects or changes in the direction and magnitude of selection on specific traits. To dissect the environmental differences in selection on life history QTL across climatic regions, we grew a panel of interconnected recombinant inb...
Given the relative ease of identifying genetic markers linked to QTL (compared to finding the loci themselves), it is natural to ask whether linked markers can be used to address questions concerning the contemporary dynamics and recent history of the QTL. In particular, can a marker allele found associated with a QTL allele in a QTL mapping study be used to track population dynamics or the his...
Detection and characterization of quantitative trait loci for growth and reproduction traits in pigs
A genome scan was performed on F animals of a cross between Meishan and Dutch commercial pigs. Phenotypic data 2 were available for growth traits and ultrasonic backfat thickness on 942–1151 animals, and for litter size on 249 and 206 animals at first and second parity, respectively. QTL analyses were performed using interval mapping by regression under the line-cross approach complemented by t...
We analyzed the genetic basis of morphological differences between two wild species of teosinte (Zea diploperennis and Z. mays ssp. parviglumis), which are relatives of maize. These two species differ in a number of taxonomically important traits including the structure of the tassel (male inflorescence), which is the focus of this report. To investigate the genetic inheritance of six tassel tr...
BACKGROUND Nested association mapping (NAM) is a novel genetic mating design that combines the advantages of linkage analysis and association mapping. This design provides opportunities to study the inheritance of complex traits, but also requires more advanced statistical methods. In this paper, we present the detailed algorithm of a QTL linkage mapping method suitable for genetic populations ...
Most agronomical traits exhibit quantitative variation, which is controlled by multiple genes and are environmentally dependent. To study the genetic variation of flowering time in Brassica napus, a DH population and its derived reconstructed F(2) population were planted in 11 field environments. The flowering time varied greatly with environments; 60% of the phenotypic variation was attributed...
Growth and fatness are economically important traits in pigs. In this study, a genome scan was performed to detect quantitative trait loci (QTL) for 14 growth and fatness traits related to body weight, backfat thickness and fat weight in a large-scale White Duroc × Erhualian F(2) intercross. A total of 76 genome-wide significant QTL were mapped to 16 chromosomes. The most significant QTL was fo...
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