intTypePromotion=1
ADSENSE

Plant evolution

Xem 1-20 trên 39 kết quả Plant evolution
  • Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành y học dành cho các bạn tham khảo đề tài: Evidence for the rapid expansion of microRNA-mediated regulation in early land plant evolution

    pdf19p panasonic06 26-12-2011 37 2   Download

  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Minireview cung cấp cho các bạn kiến thức về ngành y đề tài: Concerted gene recruitment in early plant evolution...

    pdf0p thulanh20 12-11-2011 10 1   Download

  • “This book is both up-to-date and “This book covers aiswide range of very informative for traditional subjects, and it refreshing to and new generations of plant virologists in both industrialized and developing nations of the world. Moreover, some chapters present very interesting concepts regarding the use of molecular techniques to gain new insight into long-standing pathological issues, such as virus evolution, host adaptation, and epidemiology.

    pdf557p 3113513 05-10-2012 58 21   Download

  • Chapter 17 - Plants, fungi, and the colonization of land. This chapter presents the following content: Mutualistic relationships between plant roots and the bacteria and fungi that grow in the rhizosphere help plants acquire important nutrients; nonmutualistic nutritional adaptations enable plant survival in adverse habitats.

    pdf140p shiwo_ding2 03-04-2019 7 0   Download

  • When I was asked by Timber Press to write a new book on resins, including amber—Howes’s 1949 Vegetable Gums and Resins was the most recent such effort—the breadth of interdisciplinary coverage seemed too ambitious for an individual person. There have been so many advances in resin research in the past half century, including the development of new fields of research such as chemical ecology, and the exploration of other interesting facets about resins made possible by new chemical, molecular, and microscopic techniques.

    pdf586p phoebe75 01-02-2013 52 18   Download

  • Growth and productivity of higher plants are adversely affected by various environmental stresses which are of two main types, biotic and abiotic, depending on the source of stress. Broad range of abiotic stresses includes osmotic stress caused by drought, salinity, high or low temperatures, freezing, or flooding, as well as ionic, nutrient, or metal stresses, and others caused by mechanical factors, light, or radiation.

    pdf0p hotmoingay 03-01-2013 92 17   Download

  • The theoretical metrics developed, such as genetic variance and heritability (Fisher, 1930; Wright, 1931), provided the quantitative standards necessary for the evolutionary synthesis. Further research has focused on the origin of genetic diversity, its maintenance and its role in evolution. Simple questions such as “who breeds with whom” initiated studies on the relatedness of populations.

    pdf548p conquynho32 18-09-2012 83 11   Download

  • Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Adaptive evolution of centromere proteins in plants and animals...

    pdf17p toshiba3 07-09-2011 62 10   Download

  • Our planet’s atmosphere is thought to have changed gradually and over a very wide range of CO2 concentrations throughout history. From ancient atmospheric gases trapped in ice bubbles, we have strong evidence indicating that atmospheric CO2 values reached minimum concentrations of approximately 180 parts per million during the Last Glacial Maximum, which was only 15,000 years ago. At the other extreme, calculations suggest that some 500 million years ago the atmospheric CO2 concentrations may have been about 4000 to 5000 parts per million....

    pdf545p phoebe75 01-02-2013 34 10   Download

  • How different levels of genetic variance affect the rate of evolutionary change within populations has also been intensively studied. Such changes were originally studied using phenotypic markers: variation among individual plants in traits, such as leaf shape or flower color (Ward et al., 2008). Subsequently the detection of genetic variation has become more sensitive, firstly through the utilization of variation in enzymes (allozymes) and then through PCR-based marker systems allowing direct examination of DNA sequence variation.

    pdf288p conquynho32 18-09-2012 38 7   Download

  • Flow measurement is a basic tool in industry, engineering and research. The existing applications reveal the evolution and development of new methods and devices through the years. Some of the latest emerging technologies, such as microelectronics and nanotechnology, have put forward new challenges in the flow measurement and are treated at the beginning of this book. This book comprises 8 chapters divided into 4 sections, starting with “microflows”, followed by the “biphasic” and “gas flow”.

    pdf194p qsczaxewd 22-09-2012 34 5   Download

  • That public face has or may have an extra dimension – sprezzatura. The term, used by Baldassar Castiglione in his work ‘The book of the courtier’, was described by Stemp (2006, 6) as ‘a lightness of touch that a well educated man should have in a variety of activities such as music painting and writing’. Though determined by its time, the term anticipates the evolution of aesthetic labour. That is the main thrust, the main question of this paper. Castiglione goes on to state (1528, 67) that sprezzatura is ‘to practise in all things a certain nonchalance...

    pdf0p giamdocamnhac 06-04-2013 31 5   Download

  • One of the most remarkable agricultural practices adopted by any civilized people is the centuries-long and well nigh universal conservation and utilization of all human waste in China, Korea and Japan, turning it to marvelous account in the maintenance of soil fertility and in the production of food. To understand this evolution it must be recognized that mineral fertilizers so extensively employed in modern western agriculture, like the extensive use of mineral coal, had been a physical impossibility to all people alike until within very recent years.

    pdf21p asus1122 24-10-2012 52 4   Download

  • We approximate credit risk developments at the bank level by considering non- performing loans of each institution and rating changes at the individual security level. Importantly, our database allows us to identify not only the rating of these securities at the time of origination but also their evolution over time. We also analyze to what extent housing prices, securitization activity and lending may have asymmetric effects across institutions and geographically (at the regional level) by identifying the role of each of these factors.

    pdf47p enterroi 01-02-2013 35 4   Download

  • In this section, we aim to use a comparative analysis between the Arab Region and the rest of the world to assess the current state of the media industry and identify key opportunities for growth. We will assess the similarities between the media industry in the Arab Region and the global landscape, such as changing consumption trends, the evolution of new platforms and new monetisation models.

    pdf160p nhacsihuytuan 13-04-2013 65 4   Download

  • It would seem that an introduction to oxygen is unnecessary, for we deal with it and depend upon it every moment of our lives. Oxygen is to us the essential stuff of the air we breathe. We are aerobic animals who obtain energy by oxidizing foodstuffs. As such, we are wholly dependent on oxygen for life – go without it for a couple of minutes and we panic and may even suffer irreversible brain damage. In a few more minutes, we perish. Animal metabolism depends upon oxygen for almost all of its energy-generating processes. Yet this was not always so. Early in the history of the Earth,...

    pdf0p thienbinh1311 13-12-2012 32 3   Download

  • Sometimes a burst of diversification is accompanied by dramatic morphologi - cal evolution—an event known as an adaptive radiation. When the ancestors of Darwin’s finches arrived on the Galápagos Islands a few million years ago, they did not simply evolve into 14 barely distinguishable species. They evolved dis- tinctive beaks and behaviors that allowed them to feed on cactuses, crack hard nuts, and even drink the blood of other birds. The Great Lakes of East Africa also saw an adaptive radiation of cichlid fishes.

    pdf45p machuavo 19-01-2013 40 3   Download

  • We have observed that the more that is captured, the more correlations are possible to help find things. For example, suppose you want to refer to a document you recall viewing when visiting Boston last year. A GPS trail or travel calendar entry can be used a the starting point for a search performed for all events from the same day, where the entry for viewing the document along with its name and thumbnail appears. We could multiply examples of this sort – perhaps you recall it was a hot day; perhaps you remember an appointment on...

    pdf22p yasuyidol 02-04-2013 38 3   Download

  • Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Évolution du potentiel hydrique et du système racinaire de et jeunes plants de cèdre, pin laricio de Corse pin noir plantés à l’automne et au printemps...

    pdf14p toshiba9 13-10-2011 37 2   Download

  • Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học Wertheim cung cấp cho các bạn kiến thức về ngành y đề tài: Vive la différence: biogenesis and evolution of microRNAs in plants and animals...

    pdf13p thulanh22 20-11-2011 21 2   Download

CHỦ ĐỀ BẠN MUỐN TÌM

ADSENSE

p_strKeyword=Plant evolution
p_strCode=plantevolution

nocache searchPhinxDoc

 

Đồng bộ tài khoản
2=>2