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The Restriction and Influence Study of the Soil Geochemistry Condition for Lycium Barbarum L.
Lycium barbarum L is edible, and is also officinal. It has high economic value and pharmacological action. Because the geographic location and the natural conditions of the Lycium barbarum L planted in Ningxia is very special, in 2000, the S....
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Genetic Diversity and Lipophilic Composition in Lamiophlomis Rotata, an Endemic Species of Qinghai-Ti
Lamiophlomis rotata (Lamiaceae), an important medicine plant endemic to the Qinghai-Tibet Plateau, is widely spread over highlands of Tibet and sparsely distributed in certain areas of Qinghai, Gansu, Sichuan, and Yunnan. Its typical habitat....
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Genetic Diversity and Population Structure in Elephantopus L. from South China, and Case Studies of P
The genus Elephantopus L. (family Asteraceae, Vernonieae) comprises approximately 30 species distributed in the Neotropics and the Old World. In China, there are two species: E. scaber L., the type species of this genus, and E. mollis Kunth,....
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A Study on Interspecific Relationship between Caragana Microphylla and Glycyrrhiza Uralensis
Glycyrrhiza uralensis is an important medicinal plant, growing in dry area of northern China, and its vegetation plays a significant role in ecological protection. Recently over-dug made natural distribution G. uralensis resources is facing....
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Studies on the Genetic Variation and the Fruit Quality of Zizyphus Jujuba Mill.cv.Dongzao from Differ
Dongzao jujube (Zizyphus jujuba Mill. cv. Dongzao) is one of the famous fresh-eating cultivars of Chinese jujubes that matured in middle October. With the rapid development of Dongzao jujube's industry in recent years, some problems happened....
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Studies on Cross Breeding of Cymbidium Hybridum
The research was based on 35 cultivars of cymbidium (Cymbidium hybridum) imported from Japan by Beijing Forestry University Forest Scinence Company Limited.The most studies focused on five aspects: The first was taxonomy of cymbidium cultiva....
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Phenotype Analysis of Flower Coloration of Chrysanthemum×morifolium Ramat.
The research was based on the various flower color of chrysanthemums from Beijing, Kaifeng, Japan and Netherlands. The methods of different color measurement (checked using normal eye, the Royal Horticultural Society Colour Chart and spectro....
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Studies on Genetic Diversity and Construction of Core Collection of Tree Peony Cultivars from Chinese
Tree peony, originated from China, is one of the famous flowers in China and the central plains have always been the center for cultivating tree peonies. Cultivar Group of Tree Peony from Central Plains of China, which owns the most cultivar....
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Pollen Cryopreservation of Prunus Mume Sieb. et. Zucc. and the Construction of Pollen Bank
The Mei flower (Prunus mume Sieb. et. Zucc.) is the plant which China has gained the first authority of the International Register. With plenty of wild and cultivar resources, it reveals the aesthetic standard of the Chinese and it is one of....
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Studied on Cloning and Genetic Transformation of Gibberellin 20 Oxidase Gene from Zoysiagrass (Zoysia
Gibberellins(GAs) are important plant hormones, involved in various developmental and physiological processes of plants.GA20 oxidase is the key regulatory enzyme in GA biosynthesis and metabolism pathway. Cloning and studying the function of....
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Study on Forestry Science and Technonlogy in Qing Dynasty (1644-1911)
The 21st century is the century of ecological civilization, China's forest conservation and entironment will make a positive contribution to China and the global ecological civilization. The science and technology is the primary productive f....
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Research on the Agroforestry Models Based on Water Utilization Characteristic
The farmland of reforestation areas in Pingshan, Hebei is basically supplied by rain. And water is a limiting factor for revegegation there. At present it was a trend to develop water-saving agroforestry, banding together with "Converting Cr....
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Development and Evaluation of Forecasting Model for Brown Patch on Creeping Bentgrass
Brown patch is a very serious disease on creeping bentgrass(Agrostis stolonifera). Pesticide application and culture measure are major methods now used to control the disease. In addition to the financial costs of application, certain fungic....
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Preliminary Study on Antifungal Activity and Mode of Action of Oligochitosan Against Phytopathogen in
Oligochitosan has shown a great potential as an environmental safe agent to control plant disease due to its unique dual function: antifungal effects and elicitor activity. Recently, mechanisms by which oligochitosan elicits the defense resp....
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Haplotype Variation in Structure and Expression of a Gene Cluster Associated with a Yield QTL in Rice
By constructing nearly isogenic lines (NILs) that differ only at a single quantitative trait locus (QTL), we fine mapped the yield-improving QTL qGY2-1 to a 102.9-kb region on rice chromosome 2. Comparison analysis of the genomic sequences i....
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Pollen-mediated Gene Flow and Its Modeling in Rice (Oryza Sativa L.)
Crop-to-crop gene flow in rice may affect the seed purity and quality of the recipients, in addition to other environmental consequences. Gene flow from cultivated rice to its wild relatives (crop-to-wild) may influence the genetic component....
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Isolation, Heterogenous Expression and Genetic Transformation of Novel HMW Glutenin Subunit Genes fro
The wheat storage proteins, especially the compositions and content of high molecular weight glutenin subunits (HMW-GS) play important roles in the flour processing and bread-making quality. Previous investigations showed that the genetic fo....
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Studies on Cell and Biochemistry at Gametophytes Stage of Ovule in Pinus Tabulaeformis Carr.
The material for studies on molecular mechanism of genetic regulation in the course of ovule development and gametophytes forming were mainly from the finding and inducement of mutation. In the seed orchard of Pinus tabulaeformis Carr. in Xi....
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Studies on Propagation and Adaptability of Introduced Dwarf Conifers
Dwarf conifers are the selected cultivars with low height, colorful leaf and variegated shape, and are widely applied in European and American gardens. Chinese original ornamental genetic recourses of conifer will be enlarged to improve gard....
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Chromosome Doubling of Female Gametes in White Poplars
Chromosome doubling of female gamete in white poplars were studied in Populns tomentosa × P. balleana, P. alla × P. glandulosa and P. alba × P. tomentosa, based on megasporogenesis and megagametogenesis of cytogenetics.Now the research ha....
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Studies on the Polysaccharide and Oil of Melia Azedarach in Shaanxi and Gansu Provinces of China
Melia azedarach, belonging to the family Meliaceae has been favored as pesticide and Chinese traditional medicine. In recent years, up to now, a great diversity of low-molecular weight constituents including hydrocarbons, terpenoids, limonoi....
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A Study on Forestry in Ming and Qing Dynasties in Henan Province
In the 21~(st) century,human beings become more and more concerned about environmental issues which threaten their existences. Forests,which are closely related with humankind,plays an irreplaceable role in depurating environs they live in ,....
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Study on Fundamental Theory and Assessment Approaches on Forest Health
Based on the Sino-US Forest Health Cooperation Program, along with review on lots of foreign and domestic literatures, the historical trends of attributes of forest and the concept of health in the modern society are discussed and the concep....
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Study on the Rules of Water Consumption of Dominant Tree Species and the Community of Artificial Fore
This article mainly researches water consumption properties of common tree species and the water consumption mechanism of typical stand and tree in Miyun reservoir watershed in Mountain Area of Northern China .Reveal characteristics and rule....
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Studies on Photosynthetic Physiology and Water Consumption Characteristics of Main Tree Species in Lo
This paper takes the water shortage problem of vegetation construction of Platycladus orientalis, Pinus tabulaeformis, Robinia pseudoacacia, Populus simonii, Prunus armeniaca, Hippophae rhamnoides and Caragana microphylla these seven major t....
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Research on the Function of the Water Conservation and the Soil Protection of Forest in the Three-Gor
Forest is the main part of the earth, and it is also the active factors to prevent soil and water loss. Based on the mechanism of the Soil and water conservation function of forest of the main forest in the Three Gorges, the soil and water f....
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Spatial Pattern and Scale Effect of Forest Landscape in Beijing Mountain Area
Beijing mountain area is an important part of Beijing suburb and it is a natural barrier surrounding Beijing city. The forest quality has a direct impact on the balance and stability of Beijing ecological system. Based on the quantitative de....
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Diversity of Microorganism and Insects, Invasive Risk of Anoplophora Glabripennis in Natural Forest o
The effect of species and diversity of dendrocola fungi, soil microorganism and insects, and invasive risk of Anoplophora glabripennis on ecosystem health in Populus euphratica forests was studied systematically. The main results were as fol....
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Temporal and Spatial Differentiation of Forest Landscape in Relation to Naturalness
This study was conducted in the Wuliangshan National Nature Reserve and its adjacent area in Yunnan to fill up the study gap on temporal and spatial differentiation of forest landscape in relation to naturalness, and to provide close-to-natu....
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Study on Forest Texture Extracted from Color Aerial Images
The extraction of forest texture feature from color forest aerial remote sensing images is an important part of the automatic interpretation of forest types achieved by computer. In this dissertation, five kinds of typical forests sample ima....