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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Chromosome numbers and cross-compatibility in the genus Cymbidium and some related tropical genera (Orchidaceae)

Leonhardt, Kenneth W (Kenneth William), 1950 January 1977 (has links)
Typescript. / Thesis (Ph. D.)--University of Hawaii at Manoa, 1977. / Bibliography: leaves 266-273. / ix, 273 leaves ill. (some col.)
2

An ultrastructural study of megasporogenesis in oryza sativa, cymbidium sinense and phaius tankervilliae

佟穗海, Tung, Shui-hoi. January 1997 (has links)
published_or_final_version / Botany / Master / Master of Philosophy
3

An ultrastructural study of megasporogenesis in oryza sativa, cymbidium sinense and phaius tankervilliae /

Tung, Shui-hoi. January 1997 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1997. / Includes bibliographical references (leaf 72-83).
4

Cytogenetic Studies in the Genus Cymbidium

Wimber, Donald E. 01 January 1956 (has links)
The orchids known today make up one of the largest Angiospermous families in the world. Recent estimates place the number of genera at about 450 which estimates between 10,000 and 15,000 species (some authorities go as high as 20,000). They are without doubt one of the most highly specialized groups of green plants. Botanically the flowers are of more than passing interest for they deviate so distinctly from the norm of the Monocots. They are the possessors of a number of unique structures that are found in no other family of flowering plants.
5

台灣蘭花在美國市場的商業機會研究 / A Study on Taiwan Orchids Commercial Opportunity in US Market

馮志峯, Feng,Chi Fong Unknown Date (has links)
台灣蘭花業者過去憑藉著優異的育種技術以及豐富的種源,在全球蘭花市場上佔有一席之地。由於蘭花經濟價值高,近年已吸引許多國外業者投入栽植與生產,目前包括荷蘭、美國、日本、韓國、泰國、加拿大以及中國大陸等國家的業者都開始切入蘭花市場。就蘭花的銷售而言,影響蘭花價值的因子除了有商品定位形象外,隨著建築風格的改變、空間配置的調整,新的消費需求將決定未來的蘭花價值。 美國蘭花市場是台灣第二大外銷市場,台灣蘭花外銷美國的外銷量在過去3年中平均每年有超過60%成長(外銷值平均則是每年有超過38%的成長),因此美國蘭花市場的變化將可牽動國內蘭花業者的獲利空間。 本研究目的在於分析美國蘭花市場的供應鏈的現況以及批發市場現況、並調查美國政府對於蘭花進口的相關法規制度以及台灣蘭花輸美現況,進以剖析美國蘭花市場以及找尋台灣蘭花在美國市場的商業機會。 經調查發現:美國蘭花市場主要是盆花市場,在1999年至2007年間,美國蘭花盆花市場的批發值(約1.2億美元/每年)約為蘭花切花 批發市場的10 – 16倍;以進出口的比例來看,美國蘭花盆花的進口價值為出口價值的6倍以上,因此美國屬於蘭花盆花淨輸入國;美國蘭花盆花的主要輸入源為:台灣、泰國、荷蘭、加拿大、中國與韓國;其中過去9年中,美國每年自中國、韓國、加拿大以及泰國進口的蘭花價值或是重量的複合年成長率都超越台灣;因此雖然目前台灣仍是美國的蘭花的最主要進口源,但是未來在開創美國市場時,除了應注意荷蘭業者的動態外,亦需注意中國、韓國、加拿大以及泰國的蘭花業者狀態。 美國蘭花切花進口量在2004年達最大以後即開始下滑,雖然進口量下滑但是進口總值提升,足見進口單價明顯提升。 就美國的蘭花進口法規來看,美國農業部認為絕大部分的貿易用蘭花切花都是來自於人工繁殖的植株,因此不屬於CITES的限制範圍;除非有明顯證據證實是採集自野外,否則,在檢查後,蘭花切花的商業性運輸將會被海關放行;另外,美國政府主要是依CITES的規定來執行蘭花盆花進口的查核,而目前CITES中關於人工繁殖的雜交蕙蘭(Cymbidium)、石斛蘭(Dendrobium)(血色石斛蘭(Dendrobium cruentum)除外)、蝴蝶蘭(Phalaenopsis)以及萬代蘭(Vanda)的蘭花有相同的標準,蝴蝶蘭並不是唯一的豁免種類。 就美國國內交易市場現況來看,荷蘭業者以及加拿大業者已將花卉公開拍賣市場機制引進美國,並會透過快遞業者進行蘭花遞送。 總體而言,台灣蘭花盆花以及蘭花切花在美國市場都有發展機會;建議未來的發展方向可包含:1. 依據不同地理區位市場的氣候環境與人口組成,透過育種技術來提供適地適境並符合市場期待的蘭種,並透過主張植物品種權及/或專利權及/或透過營業秘密的方式掌握育種優勢;2. 開始植根美國當地,直接引進台灣的育種與育苗技術進入美國境內(或是鄰近國家)進行蘭花的生產;3. 充分掌握國際與美國國內法規變化、定期調查美國市場需求變動,並善用美國多元化通路,不疏漏美國蘭花切花市場,也不輕忽蝴蝶蘭以外的蘭花盆花市場。 / Taiwan is a major worldwide supplier of orchids due to its outstanding seeding and breeding techniques and the natural environment. In the recent years, the lucrative economic value of orchids has prompted many industries from other countries, such as Holland, United States, Japan, Korea, Thailand, Canada and China to invest in orchid productions. In addition to the merchandise image of orchids that affects their price, demands resulting from the changing architecture styles and interior designs further determine the future value of orchids. The US orchid market is the second biggest place for orchids exported from Taiwan. Over the past three years, the average annual growth rate of orchid export weights from Taiwan to the US is over 60%, while the orchid export value on average has increased by over 38%. Therefore, the role and the possible commercial opportunities of orchids from Taiwan in the US market require further attention from the orchid farmers and the government in Taiwan. The aim of this study is to analyze the possible commercial opportunity of orchid from Taiwan in the US market by understanding the current supply chain and wholesale value of the US orchid market, ascertaining the relevant import and export laws and regulations, and investigating the current state of orchids from Taiwan in the US orchid market. According to previous investigations, it is realized that the potted orchid is the major type purchased in the US. Between 1999 and 2007, the wholesale value of potted orchids is around 120 million dollars per year, which is about 10-16 times more than that of the cut orchid. Furthermore, the US is a net import country of orchids, where the import orchid value is 6 times more than the export orchid value. Taiwan, Thailand, Holland, Canada, China and Korea are the main sources from which orchids are imported to the US. Over the last 9 years, the compound annual growth rates of both the quantity and the value of orchids imported from China, Korea, Canada and Thailand have exceeded those from Taiwan. Therefore, although Taiwan is still the major source where orchids in the US are imported from, the orchid industries from China, Korea, Canada and Thailand in addition to Holland should also be monitored. The peak of imported cut orchid quantity was in 2004 before starting to decline. Meanwhile, however, the imported cut orchid value increased. Therefore, the price for imported cut orchid thrived over the last few years. Based on Cut Flowers and Greenery Import Manual, Animal and Plant Health Inspection Service (APHIS)of United States Department of Agriculture considers that “the great majority of orchids encountered in the trade are from artificially propagated plants and therefore fall outside the scope of the CITES Regulations; therefore, INSPECT and RELEASE commercial shipments of cut orchids unless you have convincing proof that the orchids were collected in the wild; neither permits nor certificates are necessary for orchid blossoms from artificially propagated plants”. This indicates that the US government holds a relatively open attitude towards the international cut orchid trades. Moreover, based on CITES appendices valid since July 1, 2008, it is known that “artificially propagated hybrids of the following genera are not subject to the provisions of the Convention, if conditions, as indicated under a) and b), are met: Cymbidium, Dendrobium, Phalaenopsis and Vanda”. Therefore, Cymbidium, Dendrobium(except Dendrobium cruentum), Phalaenopsis and Vanda are under the same protection level based on CITES. Moreover, companies from Holland and Canada have introduced an auction mechanism for orchids into the US orchid market, and the auctioned orchids are delivered by express. The orchid industry in Taiwan has the experience and ability to export a variety of orchids to various countries, and the US orchid market is relatively open to various orchids. Both potted and cut orchids from Taiwan show commercially competitive advantage in the US market, but new marketing strategies of orchids from Taiwan in the US market are required to be implemented prior to the development thereto. Suggestions for the orchid industry in Taiwan include the following. 1. to develop customised orchid plants that are most suitable for specific markets based on the natural environment and/or the demographic make-up, and to allow further development of these dominant species by applying protection under PVPA, plant patent and/or utility patent; 2. to directly introduce the seeding and breeding experiences and techniques from Taiwan to the US or nearby countries to shorten transportation time and to allow for mass production; 3. to regularly acquire information about the changes to the CITES, US import laws and/or regulations and trends in the orchid market, and to fully utilize the diverse orchid distribution routes and the resources from research institutes for the full development of cut and potted orchid markets.

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