Crop species

Xem 1-20 trên 87 kết quả Crop species
  • 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: Unfashionable crop species flourish in the 21st century...

    pdf0p thulanh21 15-11-2011 13 2   Download

  • Mechanisms of salt tolerance in halophytes: can crop plants resistance to salinity be improved? High concentrations of sodium are toxic to most plant species, making soil salinity a major abiotic stress in plant productivity world wide. Many crop species, which countless people rely for survival, are negatively affected.

    pdf11p nguyenngocsonctu 24-11-2010 90 12   Download

  • As rates of deforestation and land degradation, and losses of biodiversity and ecosystem services, continue to rise globally, the international community is faced with the challenge of finding land use interventions that can mitigate or reduce the impact of these environmental issues. Agroforestry, the integration of trees in farming systems, has the potential for providing rural livelihoods and habitats for species outside formally protected lands, connecting nature reserves, and alleviating resourceuse pressure on conservation areas.

    pdf176p conquynho32 14-09-2012 38 11   Download

  • Coverage levels that are higher than CAT are called “buy-up” or “additional” coverage. 11 For an additional premium paid by the producer, and partially subsidized by the government, a producer can “buy up” the 50/55 catastrophic coverage to any equivalent level of coverage between 50/100 and 75/100 (i.e., up to 75% of “normal” crop yield and 100% of the estimated market price). In limited areas, production can be insured up to the 85/100 level of coverage. APH policies account for more than 90% of yield-based policies sold.

    pdf28p quaivatxanh 29-11-2012 23 4   Download

  • The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the World Health Organization concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. Dotted lines on maps represent approximate border lines for which there may not yet be full agreement.

    pdf130p can_thai 12-12-2012 13 1   Download

  • 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 61 21   Download

  • Contraceptive use accounts for a substantial portion of the variation in observed fertility rates (others include age of marriage, abortion rates, post- partum amenorrhea and abstinence, and occurrence of marital separations). Although there have been dramatic increases in the use of family planning services, unmet need for family planning remains very high in low-prevalence regions.

    pdf84p thankinhphanliet 21-12-2012 33 16   Download

  • Invasive alien plants are harmful non-native plant species whose introduction or spread threatens the environment, the economy, and society, including human health. They can be introduced into Canada from other countries or continents, or from one region of Canada to another. The current threats posed by invasive alien plants are real and growing. Why are invasive alien plants a problem? The economic cost of invasive alien plants to Canadians is enormous. Weeds in crops and pastures alone cost an estimated $2.2 billion annually.

    pdf22p lulanphuong 22-03-2012 42 16   Download

  • Under the Pharmaceutical Zero-for-Zero Initiative, which entered into force in 1995, the United States and its major trading partners eliminated tariffs on many pharmaceuticals, their derivatives, and certain chemical intermediates used to make pharmaceuticals. The U.S. list of pharmaceutical products and chemical intermediates that are eligible for duty- free treatment under the agreement is presented in the Pharmaceutical Appendix to the Harmonized Tariff Schedule of the United States.

    pdf148p cao_can 29-12-2012 67 14   Download

  • The utility of primer pairs in SCoTs was advocated by Gorji et al. (2011). SCoT markers are generally reproducible, and it is suggested that primer length and annealing temperature are not the sole factors determining reproducibility (Gorji et al., 2011). They are dominant markers, however, while a number of co-dominant markers are also generated during amplification, and thus they could be used for genetic diversity analysis (Collard & Mackill, 2009b). This has been validated through study of genetic diversity among rice varieties (Collard & Mackill, 2009b).

    pdf254p conquynho32 18-09-2012 41 13   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 59 11   Download

  • Information about climate1 is used to make decisions every day. From farmers deciding which crops to plant next season to mayors in large cities deciding how to prepare for future heat waves, and from an insurance company assessing future flood risks to a national security planner assessing future conflict risks from the impacts of drought, users of climate information span a vast array of sectors in both the public and private spheres. Each of these communities has different needs for climate data, with different time horizons (see Box 1) and different tolerances for uncertainty...

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  • In a pot experiment was conducted to evaluate the physiological characteristics and root characteristics associated with drought tolerance of rice varieties including indica rice subspecies, japonica rice subspecies, hybrid male sterility line and temperature sensitivity of wild rice species for comparison with drought-tolerant Indica rice varieties. At the effective tillering, the pot experiment was to drain the water and then dried for 4 days, then watered again.

    pdf9p thulanh2 07-09-2011 39 9   Download

  • Candidate no:000124971 Mechanisms of salt tolerance in halophytes: can crop plants resistance to salinity be improved? Jennifer Seaman High concentrations of sodium are toxic to most plant species, making soil salinity a major abiotic stress in plant productivity world wide. Many crop species, which countless people rely for survival, are negatively affected.

    pdf11p nguyenngocsonctu 21-11-2010 61 9   Download

  • Water used in slaughtering operations are considered one source of infected carcass during slaughter, particularly in the private slaughterhouses. The purpose of this study was to identify some species of microorganisms causing food poisoning from the water samples used in the slaughter ...

    pdf8p thulanh2 07-09-2011 26 8   Download

  • Many visual devices and gadgets preceded cinema, too many to list here in detail. A widespread and well-known one was the camera obscura, first constructed in 1645, which projected views in a dark room, for painters. Around the same time Anastasius Kircher built a special room to project images with mirrors, which looked somewhat like a cinema. A specialised building with many people using specialised equipment was necessary to project the images.

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  • Increasing attention has also been given to dissecting and understanding diversity in relation to genes underlying important agronomic traits in a number of crops. Molecular phylogenetics and genetic diversity analysis can help to clarify the taxonomic identity and evolutionary relationships of the wild relatives of crop species. These methods can also help prevent misidentification and carefully plan effective germplasm management strategies.

    pdf414p conquynho32 18-09-2012 35 6   Download

  • But with other POPs the transition to safer alternatives will require more effort. Alternatives may be more expensive and their manufacture and use more complicated. That could put developing countries in an awkward spot – struggling from day to day, the world's poor tend to use what they can afford and what is available. So it is not enough for the Convention simply to say No to its target list of POPs: It must also help governments find a way to say Yes to replacement solutions. Take the case of DDT.

    pdf18p cao_can 02-01-2013 21 5   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 36 6   Download

  • Theimpactonthenaturalhabitatisofgreatconcernatpresent.Increasingdemandcouldforce thedestructionofnaturalhabitats,breedinggrounds,removalofwintercover,shelterbedsfor somespecies.Mechanizationofagriculturesawthedestructionofnests,burrows,etc.Similar impactbutwithgreaterintensitycanbeexpectedtoresultfromenergycropplantations. Extendingenergycropfarmingintounusable,nonagriculturallandcanhaveanegativeimpact on that particular eco system.

    pdf33p loixinloi 08-05-2013 36 5   Download

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