نتایج جستجو برای: number of qtl

تعداد نتایج: 21179269  

Journal: :Genetics 2002
Martin P Boer Cajo J F Ter Braak Ritsert C Jansen

Epistasis is a common and important phenomenon, as indicated by results from a number of recent experiments. Unfortunately, the discovery of epistatic quantitative trait loci (QTL) is difficult since one must search for multiple QTL simultaneously in two or more dimensions. Such a multidimensional search necessitates many statistical tests, and a high statistical threshold must be adopted to av...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علوم کشاورزی و منابع طبیعی گرگان - دانشکده تولیدات گیاهی و دامی 1391

میزان نشو و نما و قدرت باروری شبپره ی مدیترانه ای آرد 2) جوانه ی ) ،(fb) ( رژیم غذ ایی تهیه شده از ( 1) آرد گندم + سبوس گندم ( 75 درصد و 25 درصد 3) جوانه ی گندم + ) ،(myg) ( گندم + مخمر نان + گلیسرول به نسبت ( 10 به 1 به 2 وزن به وزن 4) سبوس گندم + مخمر نان + گلی سرول ( 20 به 1 به 2 ) ،(my) ( مخمر نان ( 10 به 1 وزن به وزن و ( 5) سبوس گندم + مخمر نان + گلیسرول + آب ( 100 به 5 به 10 به 5 وزن ...

Journal: :Molecular ecology 2013
Alexandre Fournier-Level Amity M Wilczek Martha D Cooper Judith L Roe Jillian Anderson Deren Eaton Brook T Moyers Renee H Petipas Robert N Schaeffer Bjorn Pieper Matthieu Reymond Maarten Koornneef Stephen M Welch David L Remington Johanna Schmitt

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...

Journal: :Genetics 1993
R C Jansen

The interval mapping method is widely used for the mapping of quantitative trait loci (QTLs) in segregating generations derived from crosses between inbred lines. The efficiency of detecting and the accuracy of mapping multiple QTLs by using genetic markers are much increased by employing multiple QTL models instead of the single QTL models (and no QTL models) used in interval mapping. However,...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم پایه 1393

یک k رنگ آمیزی گراف g را رنگ آمیزی پویا می نامند, اگر در همسایه های هر رأس آن با حداقل درجه دو, حداقل 2 رنگ متفاوت ظاهر شوند. کوچکترین عدد صحیح k را به طوری کهg دارای یک k-رنگ آمیزی پویا باشد, عدد رنگی پویای g می نامند. در این پایان نامه به بررسی مفهوم رنگ آمیزی پویا, عدد رنگی پویای برخی گراف های خاص و کران بالای عدد رنگی پویا که در مقاله lai, h. j.,b. montgomery, h. poon, (2003), upper bounds ...

Journal: :Journal of animal science 2012
J F Schneider L A Rempel W M Snelling R T Wiedmann D J Nonneman G A Rohrer

Reproductive efficiency has a great impact on the economic success of pork (sus scrofa) production. Number born alive (NBA) and average piglet birth weight (ABW) contribute greatly to reproductive efficiency. To better understand the underlying genetics of birth traits, a genome-wide association study (GWAS) was undertaken. Samples of DNA were collected and tested using the Illumina PorcineSNP6...

Journal: :Evolution; international journal of organic evolution 2002
Anna Westerbergh John Doebley

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...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه زنجان - دانشکده علوم انسانی 1390

the main purpose of this study was to investigate any relationship between high school efl teachers metaphorical understandings of their role in class and their self-efficacy beliefs. teachers metaphors were elicited through two different prompts: one picturing what they believed a language teacher should be like in class, and the other demonstrating what they are actually like in class; such...

Journal: :The plant genome 2016
Hannah Robinson Lee Hickey Cecile Richard Emma Mace Alison Kelly Andrew Borrell Jerome Franckowiak Glen Fox

Water availability is a major limiting factor for crop production, making drought adaptation and its many component traits a desirable attribute of plant cultivars. Previous studies in cereal crops indicate that root traits expressed at early plant developmental stages, such as seminal root angle and root number, are associated with water extraction at different depths. Here, we conducted the f...

Journal: :Genetics 2007
Y Long J Shi D Qiu R Li C Zhang J Wang J Hou J Zhao L Shi Beom-Seok Park S R Choi Y P Lim J Meng

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...

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