Xem 1-20 trên 225 kết quả Plant genes
  • Công nghệ chuyển gen: là đưa một đoạn DNA ngoại lai vào gen của cơ thể đa bào, sau đó DNA ngoại lai này sẽ có mặt ở hầu hết các tế bào và được truyền lại cho thế hệ sau. Gen chuyển:(transgene) là gen ngoại lai được chuyển từ một cơ thể sang một cơ thể mới bằng kỹ thuật di truyền. GMP (genetically modified plant): thực vật biến đổi gen

    ppt72p huuai_91 25-08-2011 361 182   Download

  • The wide geographical distribution of the rice plant ( Oryza sativa L.) and its long history of cultivation in Asian countries have led to the development of a great diversity of varietal types. Similarly, workers in various rice-growing countries use different terms to designate identical morphological and physiological characters, agronomic traits, gene symbols, and cultural practices. Whereas varietal diversity in germ plasm is desired in rice breeding, variations in nomenclature hinder scientific communication among the workers.

    pdf40p lulanphuong 20-03-2012 74 27   Download

  • Clear and concise, this easy-to-use text offers an introductory course on the language of gene cloning, covering microbial, plant, and animal systems. The essential concepts in biology relevant to the understanding of gene cloning are presented in a well-organized and accessible manner. This updated version of the first edition is an invaluable book for nonscientists as well as scientists with little background knowledge in gene cloning, providing a wealth of information for anyone wishing to gain proficiency in reading and speaking the language of gene cloning....

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  • The genomics revolution of the past decade has greatly enhanced our understanding of the genetic composition of living organisms including many plant species of economic importance. Complete genomic sequences of Arabidopsis and several major crops, together with high-throughput technologies for analyses of transcripts, proteins and mutants, provide the basis for understanding the relationship between genes, proteins and phenotypes.

    pdf755p diennmri 19-09-2013 56 19   Download

  • Property, plant and equipment is carried at cost less accumulated depreciation. Assets manufactured by the Company include direct manufacturing costs, production overheads and interest charges incurred during the construction period. Government grants are deducted from the cost of the related asset. Depreciation is calculated using the straight-line method over the expected economic life of the asset. Depreciation of special tooling costs is based on the expected future economic benefit of these tools.

    pdf198p bin_pham 06-02-2013 26 7   Download

  • This book is about the conservation of genetic diversity of wild plants in situ in their natural surroundings, primarily in existing protected areas but also outside conventional protected areas. A lot of effort has been dedicated to conserving plant biodiversity, but most of this has focused on rare plant communities or individual species threatened with extinction.

    pdf232p coeus75 29-01-2013 30 6   Download

  • PLANT BIOLOGISTS MAY BE FORGIVEN for taking abiding satisfaction in the fact that Mendel’s classic studies on the role of heritable factors in development were carried out on a flowering plant: the garden pea. The heritable factors that Mendel discovered, which control such characters as flower color, flower position, pod shape, stem length, seed color, and seed shape, came to be called genes. Genes are the DNA sequences that encode the RNA molecules directly involved in making the enzymes and structural proteins of the cell.

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  • Despite a variety of processes and the availability of raw-material sources, the widespread utilisation of annual plants in pulping has not been technically or economically feasible in Western countries due to the lack of a simple and environmentally efficient pulping method and the problems associated with raw material storage and logistics. An ideal non-wood pulping process is simple and environmentally efficient and can be applied on a small scale.

    pdf91p loixinloi 08-05-2013 15 5   Download

  • Non coding endogenous RNAs were first discovered in the last decade of the previous century. These new discoveries changed our views of the transcriptome landscape of plant genomes and paradigms of the regulation of gene expression. With the beginning of this century, we have witnessed an explosion of studies on small regulatory RNAs that has yielded a basic understanding of the many types of small RNAs in diverse eukaryotic species and how they are functioning as RNA–protein complexes along the RNA silencing pathways.

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  • Although the main consideration of policy must be the reduction in pollution at source, there has been an increasing recognition that the biosphere is an important sink for many pollutants, with plant canopies being considered more effective than other land uses. Thus, the biosphere provides benefits additional to those associated directly with their aesthetic and wildlife characteristics. Plants facilitate the uptake, transport and assimilation or decomposition of many gaseous and particulate pollutants.

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  • MicroRNAs (miRNAs) have been proven to play important roles at the post-transcriptional level in animals and plants. To investigate clustering patterns and specific sequence characteristics in the flanking regions of plant miRNA genes, we performed genome-wide analyses ofArabidopsis thaliana, Populus trichocarpa, Oryza sativaand Sorghum bicolor.

    pdf12p cosis54 05-01-2013 21 2   Download

  • DNA methylation affects important developmental processes in both plants and animals. The process of methylation of cytosines at C-5 is catalysed by DNA methyltransferases (MTases), which are highly conserved, both struc-turally and functionally, in eukaryotes. In this study, we identified and characterized cytosine DNA MTase genes that are activated with the onset of reproductive development in rice.

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  • Yellow stem borer has been identified as a major insect pest of deepwater rice, causing severe yield losses. Bt gene(s) from Bacillus thuringiensis have been proven very effective in pest resistance program. The use of transgenic plants expressing Bt gene(s) is now occupied effective approach to control insect infestation. We have successfully introduced a synthetic cryIA(b) gene into embryogenic calli of a deepwater indica rice variety, Vaidehi, by using the biolistic method of transformation.

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  • In smaller regions such as the Carpathian Basin (located in Eastern/Central Europe), 50 km horizontal resolution may still not be appropriate to describe the meso-scale processes (e.g., cloud formation and convective precipitation). For this purpose on a national level several RCMs have been adapted with finer resolution (25 and 10 km). Here, results from two of the adapted RCMs for Hungary are analyzed, namely, models PRECIS and RegCM. In this paper, first, data and models from PRUDENCE, PRECIS and RegCM are presented.

    pdf290p lulaula 25-10-2012 26 17   Download

  • Does this mean that differences in genetic diversity levels will have predictable ecological consequences? The answer is no, because only one portion of genetic diversity is connected to ecological factors, i.e. adaptation. Ecological adaptation is a significant factor for example, in range expansion of plant species. Plants with different genotypes conferring the highest levels of fitness are expected to survive and reproduce better, shifting the gene pool over time towards higher frequencies of the alleles making up the more successful genotypes (Ward et al., 2008).

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  • The promoter or sponsor must be involved in all of the planning phases to ensure a successful event. Often, the promoter is interested in monetary gain more than he or she is interested in public safety. If this appears to be his or her primary goal, local agency participation is essential. You may encourage the promoter to cooperate by linking attendance at planning meetings with the permit process and issuance. For example, the permit to host the event may require the promoter’s presence at the initial planning meeting. Teamwork promotes successful events. One way...

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  • Chlorophyll fluorescence represents an intrinsic signal emitted by plants that can be employed to monitor their physiological state including changes of the photosynthetic apparatus, developmental processes of leaves, state of health, stress events, stress tolerance, and also to detect diseases or nutrient deficiency of plants. In particular, the application of laser induced chlorophyll fluorescence spectroscopy has drawn much attention recently owing to the non-invasive and nondestructive nature of the technique (Svanberg, 1995; Lang & Lichtenthaler, 1991; Chappelle et al., 1984)....

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  • SPB2 2/27/2003 4:06 PM Page 35 2 Plant tissue culture Introduction Most methods of plant transformation applied to GM crops require that a whole plant is regenerated from isolated plant cells or tissue which have been genetically transformed. This regeneration is conducted in vitro so that the environment and growth medium can be manipulated to ensure a high frequency of regeneration. In addition to a high frequency of regeneration, the regenerable cells must be accessible to gene transfer by whatever technique is chosen (gene transfer methods are described in Chapter 3).

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  • Events are continuously generated and consumed by clients within the system. Clients have intermittent connection semantics. Clients can be present in the system for a certain duration and be disconnected later on. Clients reconnect at a later time and receive events, which they were supposed to receive in their past incarnations as well as events that they are supposed to receive during their present incarnation. Clients issue/create events while in disconnected mode, these events would be held in a local queue to be released to the system during a reconnect.

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  • Sales promotions can be seen as a service that provides encouragement to purchase a product or service by changing the perceived value-for-money equation. In the past decade manufacturers and retailers have been gradually switching from above the line mass media advertising to a variety of below the line sales promotions. Although sales promotions take up a very large share of total marketing expenditure, they remain an area which has less strategic consideration or attention than any other aspect of the promotion mix, especially in the international market arena.

    pdf16p khanhchilam 01-04-2013 23 8   Download

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