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Development of an Infection Model for the Highly Pathogenic Porcine Reproductive and Respiratory Synd
Porcine reproductive and respiratory syndrome (PRRS) is characterized by late-term abortions and delivery of increase number of stillbirths or premature and weak piglets in sows and severe respiratory disease in neonatal and growing pigs. No....
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Creation of Sexual Hybrid Populations and Construction of Molecular Genetic Linkage Framework Map in
Citrus is a very important fruit for agricultural economy in the world. Citrusbreeding and construction of linkage map has been hindered by several factors includingpolyembryony, female/male abortion and high hetetozygosis. In an effort to r....
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Function of Brassica Napus MPK4 in Resistance to Sclerotinia Sclerotiorum
Sclertinia sclerotiorum (Lib.) de Bary causes a highly destructive disease in oilseed rape, resulting in a tremendous seed yield loss in China and other regions of the world. No immune or highly resistant cultivars of oilseed rape have been....
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Fine Root Senescence of Manchurian Ash Seedlings under Drought Stress
Fine roots are the most important components of tree root system,and have significant physiological and ecological functions.The development and tumover of fine roots have vital effects on the development of an individual tree,the forest pro....
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Study on Effects of Improved Measures on Vegetation and Soil of Grassland
The research was carried out at the country of Taipusi, south of Xilingol Grassland of Inner Mongolia, for two years from 2007 to 2008. The objective of the experiment is to research the effect of different improved measures on the degraded....
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Study on the Control to Nitrogen and Phosphorus Non-point Source Pollution from Vegetable Fields by F
Excessive fertilizers are often applied on vegetable fields in order to pursue higher yields. In some areas, the amounts of chemical fertilizers and manures so applied are several times of that needed by vegetables. Nitrogen (N) and phosphor....
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Study on Propagating Ecology and Genetic Diversity of the Golden Apple Snail (Pomacea Canaliculata)
The golden apple snails (Pomacea canaliculata) are big food fresh-water snail, and they live in tropical or Subtropical Region which are found in the Amazon Plain of South America. As a new breed source, the snails were introduced into Taiwa....
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Molecular Identification of Six Begomoviruses in Fujian and Selection the Interactive Proteins of RaM
Geminiviruses have circular single-stranded DNA genome encapsidated in twinned icosahedral particles. They have caused significant yield loss to many crops worldwide. Several begomoviruses have been reported infecting crops and weeds in sout....
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Cloning and Transformation of Several Fruit Ripening-related Genes from Papaya (Carica Papaya L.)
Papaya, Carica papaya, a member of the family Caricaceae, is one of the most important tropical and subtropical fruit trees. Like most climacteric fruit, papaya ripens quickly after harvest and then soften and deteriorate rapidly. It is also....
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Isolation and Identification of Differentially Expressed Gene in Liver of Goose & Study on the Effect
The liver metabolize of goose was dramatically changed induced by overfeeding,and causing large fats deposited in liver. The sensibility of liver is different among goosebreeds in responses to overfeeding, which resulting in differential fat....
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Cry Genes from Bacillus Thuringiensis and Engineered Strains Toxic to Scarabaeidae and Chrysomelidae
Bacillus thuringiensis (Bt) is the most widely used insecticidal microorganism. Its activity is attributed largely to insecticidal crystal proteins (ICP). Though Bt toxins are used as biopesticides, there are some drawbacks such as narrow ho....
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Thermoregulation Ability of Locusta Migratoria Manilensis and Its Relationship with Pathogenesis of M
In the aspect of using microorganism to control locusts,we frequently met with the problem that the effect in the lab was good but not ideal in the field.The problems included the velocity to death was slow,the death rate was low and control....
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Stady on the Multi-center Management System of Forest Resources in the Northeast Asian
"Though the resources are exclusively possessed by different countries,the biology is shared by all nations without any frontier." The forest resources constitute the main body of land biological system and play a highly important role in ma....
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Nitrogen Transform and Release in Typical Temperate Forest Ecosystems in Northeastern China
Temperate forest has been playing a key role in the global forest ecosystems,which is one of the most sensitive to the global climate warming.It is necessary to investigate nitrogen turnover and controlling factors for a better understanding....
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Studies on the Conidia Production and Formulation Processing of Mycoherbicide for Weeds Control in Pa
Barnyardgrass [Echinochloa crus-galli (L.) Beauv.] is a troublesome weed in rice (Oryza sativa L.) field in the world. Yield losses caused by barnyardgrass in rice are severe. The fungal pathogens, Helminthosporium gramineum Rabehn f.sp. ech....
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The Regulation of Nitrogen and Phosphorus Nutrition on Growth of Larch Seedling
Larch(Larix gmelinii) is the one of the most important timber species in northeastern China,and its growth is often limited by nitrogen and phosphorus shortage because slow decomposition rate of litter results by low temperature and long win....
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The Variation of Soil Quality and the Sustainable Utilization of Hilly Dryland in the East of Great X
Based on the method of quantitative and qualitative analysis, this study was conducted to investigate the change of soil fertility characteristics, soil physical properties, soil environmental quality, soil erosion status of hilly dryland in....
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Simulation of Carbon Balance of Forest Ecosystems in Daxing'an and Xiaoxing'an Mountains
The Integrated Biosphere Simulator (IBIS) is one of the most sophisticated models in simulating terrestrial biosphere processes based on dynamic vegetation schemes. IBIS is designed to integrate a variety of terrestrial ecosystem phenomena w....
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Studies on Screening of Barley Genotypes with Frost Tolerance: Physiological and Genetic Aspects
Low temperature is a major environmental stress for cereal crops worldwide, reducing yield potential and grain quality of barley in sensitive reproductive stages. Barley (Hordeum vulgare L.) is a major world crop ranked the fourth in plantin....
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The Research of Plants Transpiration and the Sifting of Water-conserving Green Model in Dalian City
Urban water-conserving afforestation deserves to be attached importance to in water scarced area.This paper focused on the transpiration of one kind of mixed lawn,five bush species and four arbor species at the Laodong park,using Micro-lysim....
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Isolation and Function Analysis of Stress-Responsive Genes GmUBC2, GmPK and GmNHX2 from Soybean (Glyc
China is one of the most water-scare countries in the world, drought is the main natural disaster in agricultural production, the areas of the alkali land and the secondary salinized arable land has increased year by year. These adversely en....