نتایج جستجو برای: 4x and 6x

تعداد نتایج: 16827372  

Journal: :Cytogenetic and genome research 2005
N Cuñado S Blazquez L Melchor M Pradillo J L Santos

The allohexaploid Aegilops species (2n = 6x = 42), Ae. neglecta 6x (UUXtXtNN), Ae. juvenalis (DcDcXcXcUU), and Ae. vavilovii (DcDcXcXcSsSs) regularly form bivalents at metaphase I. However, in Ae. crassa 6x (DcDcXcXcDD) 0.27 quadrivalents per cell were observed probably as a consequence of the partial homology displayed by the D and Dc genomes. Likewise, the synthetic amphiploid Ae. ventricosa-...

2001
Alexander A. T. Johnson Richard E. Veilleux Eric P. Beers Glenn R. Buss Glenda E. Gillaspy M. A. Saghai Maroof Richard Veilleux

Recent advances in plant genetic engineering offer substantial benefits to farmers throughout the world. Genetic research has identified many exogenous genes that could considerably decrease production costs through transgene-mediated resistance to insect, viral, fungal and bacterial pathogens. Potato can be produced from true potato seed (TPS) through a sexual polyploidization step, known as 4...

2012
Michael Emmans Dean Raj Karsandas J Martin Bland Debbie Gooch Hugh MacPherson

BACKGROUND Difficulty in controlling attention can lead to mental fatigue in the healthy population. We identified one trial reporting a benefit in patients' attention using a homeopathic formula preparation. One component of the preparation was potassium phosphate, widely available off the shelf as Kali phos 6x for cognitive problems. The aim of this exploratory trial was to assess the effecti...

2001
M Coelho W McKnight B Cousins G. F. Yi G. L. Allee J. W. Frank J. D. Spencer K. J. Touchette A. M. Gaines H. J. Liu

Nine thousand eight hundred, day old male Cobb X Cobb broilers were utilized in a 5x2 factorial design (10 replications/treatment) to determine the effects of five B-vitamins (riboflavin, pantothenic acid, niacin, B12 and folic acid) fortification levels (NRC, 2X, 4X, 8X and 16X NRC) and two levels of stress (low and moderate) on the performance of 0-49 day broilers. Diets were formulated to be...

1999
Joseph D. Sherman

The small-angle source (SAS), 4X source, and 8X source are Penning surface-plasma sources (SPS) that produce high-current, high-brightness H" ion beams for accelerator applications. The scaling from the SAS (IX source) to the 4X source, and from the 4X source to the 8X source is at least as good as predicted by the scaling laws. In many instances, the scaling is better than predicted, particula...

Journal: :The Journal of general virology 2000
A Merits O N Fedorkin D Guo N O Kalinina S Y Morozov

The putative replication initiation protein (Rep) of Coconut foliar decay virus (CFDV) was expressed as a 6x His recombinant protein in E. coli and in recombinant baculovirus. Purified 6x His-Rep protein was demonstrated to possess sequence non-specific RNA- and ssDNA-binding activities as well as magnesium-dependent ATPase/GTPase activity. The yeast two-hybrid system revealed that CFDV Rep cou...

Journal: :Journal of Plant Registrations 2021

Cultivated peanut (Arachis hypogaea L.) has a narrow genetic base and is isolated from its wild relatives. This bottleneck results in lack of strong resistance to biotic abiotic stress. However, high levels variation exist among the In order enlarge cultivated introgress beneficial alleles relatives, interspecific hybrids were produced set selected diploid species. Upon colchicine treatment, fe...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه بوعلی سینا - دانشکده علوم پایه 1389

این پروژه با هدف بررسی وجود تنوع درون گونه ای گیاه hypericum perforatum l. (st john’s wort) در استان گیلان، با استفاده از روش تعیین زیستگاه ویژه (d.s.s) انجام شد. گیاه h. perforatum یک گیاه علفی چند ساله، فاقد کرک از تیره hypericaceae و جنس hypericum است. hypericum تنها جنس این تیره است که در ایران رشد می کند. این گیاه با طیف وسیعی از متابولیت های ثانویه و دارای خواص داروئی ضد افسردگی، ضد میکرو...

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