Low Davidia involucrata trees

D. involucrata tree seedlings, dove trees planting method, sand storage D. involucrata Davidia involucrata seed tree seedlings, annual D. involucrata tree seedlings, where Davidia involucrata seedlings, Sichuan Davidia involucrata trees, sell Davidia involucrata trees, dove seedling cultivation methods, Gong Tung cultivation methods and conservation value, low-priced D. involucrata tree seedlings, dove trees price, Pingwu Davidia involucrata seedlings, annual seedlings Davidia involucrata, Ya'an Davidia involucrata Miao, Tibetan sand D. involucrata tree seeds. Davidia involucrata is a unique single genus is known worldwide ornamental plants. This article describes the characteristics of the species and the protection and development and utilization. Davidia involucrata endangered plants and exploitation, - D. involucrata  known as water pear, dove tree endemic to China is only one and that is a variant of D. involucrata Davidia involucrata leaves and light . D. involucrata Tertiary relict plant a "living fossil," said Davis, in southern France who first found me with rare and endangered species is listed as items on the development and changes to the history of the protection of the species level research in plant systems It has a high academic status. Its fine texture of wood can be made thin wood carving, expensive furniture that I ignored the high export species with economic value. Gong gathers world famous ornamental plant foot flower shape resembles fly their pigeons are Western botanists call "dove tree ". However, due to various reasons Davidia involucrata has failed to become widely used in landscape trees and shrubs. In the 1750s and was ignored until the emergence of D. involucrata preliminary study reports and the introduction and cultivation of numerous research reports have day Davidia involucrata Davidia involucrata community focused on science, botany, propagation techniques and introduction man under cultivation, population ecology, Biological characterization morphology, anatomy and so on. And aspects related to the physiological and biochemical, genetic, molecular biology rarely reported. Morphological characteristics and morphology Habits Davidia involucrata Davidia involucrata Davidia involucrata features high up to large deciduous tree bark greyish than current branches purple green hairless perennial branches dark brown or dark gray with winter buds conical - often to ovate scales into imbricate ovate leaves alternate paper apex acuminate base heart-shaped margin coarsely toothed densely yellowish hirsute below polygamous flower flower flower heads only male bisexual flowers rest is the base of a large strip of the early pieces of white bracts Following turned milky white after light green to brown and fall off a distance, like pigeons there was a "dove tree," said ¨. Ellipsoidal drupe fruit purple green flowering month months. Seeds large kind of thin film-like seed and endocarp near integrate with hypertrophy endosperm and clear lines of cotyledon embryo morphogenesis year fruit drop incomplete. "Habits Davidia involucrata mainly in the southwest elevation evergreen me with one, wide Mount Emei in Sichuan and Leibo leaf forest, Mabian County as the main distribution area. " D. involucrata hi half shade and cool and humid climate with high humidity of the air is better Hi deep, fertile, moist but well-drained acidic or neutral avoid alkaline soils and dry soils. Intolerance to cold and sun exposure. In nature, often with superba, Cercidiphyllum, maple, etc. Mixed. Davidia involucrata Davidia involucrata reproduction propagation and cultivation techniques can be divided into sexual reproduction, asexual reproduction and introduction and cultivation. Sexual reproduction that is propagated by seed. D. involucrata seed dormancy habits generally fall to collect seeds will germinate in the spring of the third reason for dormant seeds of D. involucrata still not completely understood. Some people think that hard endocarp flooding, poor ventilation and mechanical resistance is the main cause of dormancy. But 陈坤荣 and so that the cause of D. involucrata seed dormancy is mainly due to seed after embryo morphology and physiology cooked cooked. The main cause of D. involucrata seed dormancy is the second time after physiological maturity '. Seed propagation involving a variety of measures to improve the germination rate Shiwan Bin, etc. By using growth regulators found that a concentration of the treatment could break seed dormancy D. involucrata significantly promote the germination months after sowing germination rate .... Chen Daxin found that by using concentrated sulfuric acid soaking method can greatly improve the Davidia involucrata seed germination rate and speed of germination which soaked with concentrated sulfuric acid in a month-cho germination rate of ¨. Since the peak of the hard seed shell permeable poor ventilation. The main problem of sufficient seed propagation seed treatment.张家勋 such as the use of physical methods such as nicks hammering and other treatment D. involucrata seed germination asked not changed significantly increase the germination rate one. Important factors D. involucrata seed testa mechanical resistance also affect seed germination eliminate skin resistance is a necessary condition for successful germination in addition variable temperature germination of Davidia involucrata great potential for seed multiplication in a certain application. Asexual reproduction of D. involucrata seeds removed sexual reproduction external natural conditions but also in the roots of the new plants sprout tiller born asexual reproduction. This is considered to enhance the competitiveness of D. involucrata kind ask reproductive strategies to increase the chances of survival. The former is the main breeding subculture way and can move to expand the distribution area of ??cultivation which are minor and do not allow reproduction of D. involucrata expand distribution area is very difficult because the seed multiplication D. involucrata artificial asexual reproduction is also very important. Many methods of asexual reproduction. Such as hardwood cuttings, softwood cuttings, buried, grafting, layering high sticks and other methods is the main way in which the cuttings. About the Author Raymond alone a male graduate student research in Shandong Qingdao Landscape Plant Genetic Resources and Exploitation. ? Corresponding author Received - Clin AGRICULTURAL SCIENCE . Hardwood cuttings of cuttings choose the best shoots of the year the mother was born in the base diameter of a Softwood cuttings can be used as early months old at the highest survival rate.陈坤荣 etc. Cutting through the second large-scale trial test slotting matrix river sand, perlite, fine river sand and other drugs to try cinder mix of various concentrations of indole indole acetic acid, indole butyric acid, naphthalene acetic acid, rooting and rooting Ning and other branches of the trial - year - old, old branches or sprouted months to the election-year-old shoots season in February and - March also take into account the differences in climate around the country. Respectively in Kunming and Xishuangbanna, Southwest Forestry College of the hot test cutting test simultaneously arranged to have the insulation condition Meng cover a total of more than cutting trees. The results also show that regardless of whether the old branches twigs treated with the drug in a variety of slotting the spring and summer cuttings are cut cuttings may form a callus, but after the formation of callus rooting difficult to further differentiate the most after another dead black callus only about in the summer cuttings ABT-year-old shoots through or indole acetic acid formed long before the differentiation of roots. And if early transplanting after rooting. It is difficult to survive. Davidia involucrata Davidia involucrata breeding related to the protection and exploitation. Reproductive technology is currently the main breeding methods foot cuttage related to seed multiplication and tissue culture, grafting rarely carry out relevant research and actively promote technological achievements is an important way to protect and extend D. involucrata germplasm. Introduction and Cultivation of D. involucrata Davidia involucrata in China for a long time only a small amount in a number of research institutes in the introduction and cultivation experiments did not start until a planned introduction and cultivation. Which in Lin'an County, Henan Jigongshan Tianmu Mountain and the nearby counties of Zhengzhou City, Hubei Institute of Forestry and after five bee River Forest acreage is large. D. involucrata cold resistance hypothermia introduction is not a threat. Now has the introduction of D. involucrata Geneva latitude and altitude of Zhengzhou flowering and fruiting D. involucrata also has a wider pH adaptability D. involucrata needs of the growing season and rainy and humid climate of their natural distribution area annual average humidity is therefore the introduction of drought and Davidia involucrata The success or failure of a great relationship. D. involucrata destructive disease in susceptible seedling damping-off disease 陈迎辉 analyzed the harmful pathogens Gang and proposed to take timely transplanting shoots shade drug prevention and treatment, combined with the integrated control of soil management and other measures can be effective in combating .... Since  found abroad have done a lot of the introduction of Davidia involucrata Davidia involucrata in Geneva since even in a private courtyard towels can also watch the Davidia involucrata flowers ¨ .... Conservation and protection of the purpose of the use of D. involucrata Davidia involucrata Davidia involucrata wild germplasm resources have not been given sufficient attention in recent years, coupled with the rapid increase of population and the predatory exploitation of natural resources for the survival of D. involucrata environmental conditions severely Originally facing destruction on D. involucrata community had relict of the state and therefore the protection of endangered wildlife resources Davidia involucrata recently become one of the most important issues. Such protection of rare and endangered species Davidia involucrata goal is to focus on the protection of plant genetic diversity to prevent the extinction of their species and gradually make the plant resources threatened salvation, restoration and development of rare and promote sustainable use of such resources. Conservation and Utilization of Davidia involucrata Davidia involucrata germplasm is the world's valuable ornamental species is also an important timber tree has great economic value. Especially its elegant grace is greater by people of all ages in recent years as people dig wild seedlings to the market to sell or planting deforestation and illegal logging coupled with the current low rate of natural reproduction of D. involucrata small number of distribution shrinking D. involucrata forest in some areas in danger of being replaced by other species. In order to avoid further damage to D. involucrata germplasm resources should strengthen the protection and utilization of Davidia involucrata resources. Situ conservation of Davidia involucrata Davidia involucrata protection should focus on the origin of the in situ conservation. For severely damaged areas Resource of Davidia involucrata Davidia involucrata deforestation should be strictly limited and resources to nurture in order to facilitate regeneration and restoration of Davidia involucrata. Davidia involucrata vulnerable species composition of human disturbance Yu Li Fei, a column for the local community because of human interference D. involucrata tree layer species less human disturbance only serious study of Davidia involucrata Community in Guizhou Karst region Baiqing wet show - shrub layer, herb layer types are less poor growth and development of community stability of Davidia involucrata Population have degradation trends. Different types of plants and Davidia involucrata there is some degree of protection D. involucrata rich habitats rich in species composition and structure of the reproduction of D. involucrata community has a positive meaning to maintain effective protection of species of native communities of the main measures of Davidia involucrata Davidia involucrata communities coupling relationship between different species in the spatial distribution of interdependence and therefore should prevent damage to the environment due to an adverse effect on the normal growth of Davidia involucrata manual picking seeds while addressing restrictions to ensure the normal update D. involucrata forest. Ex-situ conservation of growth factors Davidia involucrata origin of the climate and soil adequately studied Experimental study of ex situ conservation strengthened to expand the size of the breeding and cultivation of green in the city should be the introduction of Davidia involucrata Without prejudice based on the principle of suitable tree Under the premise of Davidia involucrata grow as much as possible to increase the number of species plantations. Introduction, propagation and methods of using the modified species bound to expand the distribution area shed D. involucrata Davidia involucrata under the premise of protecting genetic flash and biological characteristics of the species group. Use enough protection to protect endangered plants use to protect the most efficient way of Metasequoia and Ginkgo rare endangered species, but the number of people due to their physiological and ecological habits conducted in-depth study of the introduction and cultivation of widely used in city landscaping so now they are in the city everywhere both played a good greening effect while protecting the biodiversity. D. involucrata with high ornamental value in landscaping can play a very good effect as well kung palm wood furniture also has high economic value. By D. involucrata as timber species and ornamental tree species in large scale use of both increased population has expanded its distribution. Prospect of research proposals and reports on Davidia involucrata more concentrated at the macro level and ecological description of their biological properties and rarely in germplasm, breeding systems and molecular level. Various studies dove biology is still in its infancy has been reported lack of systematic. Davidia involucrata my resources with endemic plants of ancient origin can provide valid scientific material for the study of evolution and vegetation classification system and it is also the world-famous rare and valuable ornamental plants ornamental value is extremely valuable biological resources of our country and the world acclaimed and should therefore be use the following methods to further protect and research. The conservation status of Davidia involucrata should attract national and local governments. Davidia involucrata then sell seedlings, quality Davidia involucrata trees, welcome to visit.