Orchid Seed Diversity
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Orchid Seed Diversity
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Author : Wilhelm Barthlott
language : en
Publisher:
Release Date : 2014
Orchid Seed Diversity written by Wilhelm Barthlott and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with Orchids categories.
Orchid Conservation
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Author : Kingsley W. Dixon
language : en
Publisher:
Release Date : 2003
Orchid Conservation written by Kingsley W. Dixon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Orchids categories.
Orchids Of India
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Author : Limasenla et al
language : en
Publisher: Daya Books
Release Date : 2002
Orchids Of India written by Limasenla et al and has been published by Daya Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Orchids categories.
Orchids Have Fascinated People Ever Since Their Discovery By Father Of Botany Theophrastus (370-385 Bc). At Present Orchids Have Emerged As Leaders In Floriculture And Account For Multimillion-Dollar Cut Flower Industry In Several Countries. Majority Of Orchids Known In Cultivation Are, However, Natives Of Tropical Forests Of Indian Subcontinent (Mainly From India, Myanmar, Sri Lanka, Thailand, Malaysia). The Indian Bulbophyllum, Cymbidium, Dendrobiums, Paphiopedilums, Vandas Etc. Are Contributing To Develop High Quality Hybrids. Indian Subcontinent Is Considered Primary/Secondary Center Of Origin For Orchids Found In Phytogeogrphically Interesting North Eastern Region. The Region Being One Of The Hot Spots Of The World Is The Richest Biodiversity Center Of The Indian Subcontinent. The Genus Vanda Is Most Striking And One Of The Highly Popular Group Of Orchids. The Group Display Great Diversity, Coloration And Tessellation Pattern, Thus Comprise Forms Which Are Most Magnificent Orchids For Which India In General And North-Eastern India In Particular Could Be Proud Of Medicinal Values Of Vandaceous Taxa Find Mention In Charka Samhita An Ancient Medicinal Treatise Written By Charka In Sanskrit. The Sub Tribe Sarcanthinae And Genus Vanda Is A Difficult And Complex Group. There Are Many Attempts To Transfer Or Merge Species As Well Creation Of New Genera. In The Light Of Above An Account On Indian Vandas Is Important And The Authors Therefore Have Made An Earnest Attempt On Most Deserving Topic To Present In Comprehensive Account On Various Aspects Of Indian Species Of Vanda. After Successful Green Revolution Which Helped India To Attain Self Sufficiency In Food Grain, The Country Now Needs To Exploit The Commercial Potential Of Its Vast Orchid Biodiversity. Vanda Is One Of The Important Orchid Genera Represented By A Number Of Species Of This Region. The Book Nicely Provides The Present Status And Biodiversity Of Indian Vanda In General And Northeast In Particular. The Book Has Clearly Established That Of 40 Species Of Vanda, Which Are Mainly Distributed In The Indo-Malayan Region, India Is A Major Natural Habitat With 14 Species. The Book Also Deals Studies On Other Aspects Of Taxonomy Of Indian Species. Contents Chapter 1: Introduction; Chapter 2: Review Of Literature; Chapter 3: Biodiversity; Chapter 4: Phenology; Chapter 5: Palynology; Chapter 6: Seed Morphometry; Chapter 7: Cytology; Chapter 8: Conclusion.
Orchid Biology Recent Trends Challenges
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Author : Shaik Mahammad Khasim
language : en
Publisher: Springer Nature
Release Date : 2020-01-31
Orchid Biology Recent Trends Challenges written by Shaik Mahammad Khasim and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-31 with Science categories.
This book on “Orchid Biology: Recent Trends & Challenges” reviews the latest strategies for the preservation and conservation of orchid diversity and orchid germplasm. It is an outcome of the Proceedings of the International Symposium on “Biodiversity of Medicinal Plants & Orchids: Emerging Trends and Challenges” held on 9-11 February 2018 at Acharya Nagarjuna University, India. In addition, eminent orchid experts from around the globe were invited to contribute to this book. All chapters were peer-reviewed by international experts. The Orchidaceae are one of the largest families of flowering plants, comprising over 700 genera and 22,500 species and contributing roughly 40 percent of monocotyledons. They also represent the second-largest flowering plant family in India, with 1,141 species in 166 genera, and contribute roughly 10% of Indian flora. Orchids comprise a unique group of plants and their flowers are among the most enchanting and exquisite creations of nature. Phylogenetically and taxonomically, the Orchidaceae are considered to be a highly evolved family among angiosperms. They show incredible diversity in terms of the shape, size and colour of their flowers, and are of great commercial importance in floriculture markets around the globe. Millions of cut flowers of Cymbidium, Dendrobium, Cattleya, Paphiopedilum, Phalaenopsis, Vanda etc., besides potted orchid plants, are sold in Western Countries and thus, the orchid cut flower industry has now become a multimillion-dollar business in Europe, the USA and South East Asia. Besides their ornamental value, orchids hold tremendous pharmaceutical potential. Root tubers of Habenaria edgeworthii form an important component of the ‘Astavarga’ group of drugs in Ayurvedic medicine. It is an established fact that tubers of some terrestrial orchids have been used to treat diarrhoea, dysentery, intestinal disorders, cough, cold and tuberculosis. Some orchids, particularly those belonging to the genera Aerides, Arachnis, Cattleya, Cymbidium, Dendrobium, Epidendrum, Oncidium, Paphiopedilum, Phalaenopsis, Renanthera, Vanda etc. have been extensively used to produce internationally acclaimed hybrids. Yet paradoxically, Indian orchids are victims of their own beauty and popularity. As a result, their natural populations have been declining rapidly because of unbridled commercial exploitation in India and abroad. In fact, some orchids are now at the verge of extinction, e.g. Renanthera imschootiana, Diplomeris hirsuta, Paphiopedilum fairrieanum, Cypripedium elegans, Taeniophylum andamanicum etc. Given the global importance of orchids in terms of securing human health and wealth, this comprehensive compilation, prepared by international experts, is highly topical. Its content is divided into five main sections: (I) Cryopreservation & Biotechnology, (II) Orchid Biodiversity & Conservation, (III) Anatomy & Physiology, (IV) Pollination Biology and (V) Orchid Chemicals & Bioactive Compounds. All contributions were written by eminent orchid experts/professors from around the world, making the book a valuable reference guide for all researchers, teachers, orchid enthusiasts, orchid growers and students of biotechnology, botany, pharmaceutical sciences and ethnomedicine. It will be equally valuable for readers from the horticultural industry, especially the orchid industry, agricultural scientists and policymakers.
Orchids
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Author : S. John Britto
language : en
Publisher:
Release Date : 2004
Orchids written by S. John Britto and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Orchid culture categories.
Orchids
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Author : IUCN/SSC Orchid Specialist Group
language : en
Publisher: IUCN
Release Date : 1996
Orchids written by IUCN/SSC Orchid Specialist Group and has been published by IUCN this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Ecological surveys categories.
This action plan chronicles the threats faced by wild orchids, but more importantly to critical habitats that host extraordinarily high orchid diversity and endemicity. It explores and recommends specific ways that national and local government, legislators, scientists and orchid conservationists as well as growers can all help to reverse present trends. The facts and viewpoints presented in this comprehensive document update and supplement the information available to conservation organizations and agencies through the world so that they can lobby their appropriate government offices more effectively.
Growing And Pruning Orchids
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Author : David Birrani
language : en
Publisher: Independently Published
Release Date : 2023-04-30
Growing And Pruning Orchids written by David Birrani and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-04-30 with categories.
Growing and Pruning Orchids Learning Easy ways to Growing Orchids Orchids are a diverse and widespread family of flowering plants, with over 28,000 species and more than 100,000 hybrids and cultivars. They are found in every continent except Antarctica, and thrive in a wide range of habitats including rainforests, deserts, and marshes. Orchids are prized for their beautiful and often elaborate flowers, which come in a stunning variety of colors, shapes, and sizes. Orchids are members of the Orchidaceae family, which is one of the largest families of flowering plants. They are characterized by their unique reproductive structures, which have evolved to be highly specialized and efficient at pollination. Unlike most other flowering plants, which have male and female reproductive structures in separate flowers, orchids have both male and female reproductive structures in the same flower. This means that orchids are self-fertile, meaning they can fertilize themselves, but they also rely on external pollinators such as bees, moths, and birds to ensure genetic diversity. Orchids are also known for their intricate and often symbiotic relationships with fungi. Most orchid seeds are tiny and lack the energy reserves needed to germinate and grow into mature plants. Instead, they rely on a symbiotic relationship with a type of fungus to provide them with the nutrients they need to grow. The fungus breaks down complex organic compounds in the soil and provides the orchid seed with simple nutrients that it can absorb. In return, the orchid provides the fungus with sugars and other nutrients that it has synthesized through photosynthesis. To Continue Reading, Get a Copy!!!
Orchid Biology
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Author : Joseph Arditti
language : en
Publisher:
Release Date : 2009
Orchid Biology written by Joseph Arditti and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Orchids categories.
Orchid Biology: Reviews and Perspectives, IX, (2007) presents a broad range of scientific subjects that represents the most current knowledge in orchidology. This volume includes chapters that discuss (1) Calaway Dodson, whose research on the orchids of Ecuador continues to inspire generations of botanists; (2) orchids pollinated by Lepidoptera; (3) a comprehensive survey of terrestrial orchid morphology; (4) the original writings (translated into English) on orchid seed germination by Noël Bernard; (5) the origin of Singapore's national flower, the well-known orchid Vanda 'Miss Joaquim'; (6) a thorough overview of the impact that DNA sequence data has made in orchid systematics by focusing on the first decade of contributions in molecular phylogenetic studies of Orchidaceae; and (7) a detailed appendix, the subject of which is species-by-species records from pollination to fruit ripening, seed maturation, and germination of orchids. Volume IX of Orchid Biology: Reviews and Perspectives is truly international in scope and diverse in subject. 10th volume (2009) in a series which was initiated in 1977. Like previous volumes, it contains scientific peer reviewed reviews on topics dealing with orchids. These topics include 1) a history of orchid breeders in Singapore, 2) discussion of research on pollen effects on orchid flowers carried out a century ago by the German plant physiologist Hans Fitting in Bogor, Indonesia which led to the first suggestion that plants produce hormones, 3) consideration whether orchids are mentioned in the Bible, 4) review of food hairs in orchids, 5) outline of pollen dispersal units in orchids, 6) survey of orchids in art, 7) a tracing of the history of Vanilla pollination, 8) a chapter on viruses which attack orchids and 9) an appendix which lists a very large number of orchid books. All the volumes in this series will appeal to those who are interested in orchids and plant scientists in general.
Native Orchids Of Singapore
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Author : Tim Wing Yam
language : en
Publisher:
Release Date : 2023
Native Orchids Of Singapore written by Tim Wing Yam and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with Orchid culture categories.
Challenges And Opportunities In Orchid Ecology And Conservation
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Author : Pavel Kindlmann
language : en
Publisher: Frontiers Media SA
Release Date : 2023-08-02
Challenges And Opportunities In Orchid Ecology And Conservation written by Pavel Kindlmann and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-02 with Science categories.
Understanding diversity patterns and the effect of global change on abundance, distribution patterns and species survival are of the most discussed topics in biodiversity research. Species are disappearing worldwide, mostly due to habitat loss, but other factors like climate change are likely to increase in importance during the 21st century. Thus, one of the most worrying issues is that we still do not know the optimal abiotic and biotic requirements for population persistence of many of the still existing species, which makes it very difficult, if not impossible, to make appropriate recommendations for their conservation in terms of proposing an effective management of their sites. Analysis of these requirements is, however, strongly dependent on the taxonomic group considered and on life history strategies of the species that comprise the group. In this Research Topic, we concentrate on this issue applied to orchids, one of the most abundant groups of flowering plants with approximately 30,000 species. They are classified among the most threatened groups worldwide. Of the approximately 1000 species that have been evaluated, almost 60% are threatened, endangered or extinct. For a few orchid species, detailed records from monitoring efforts provide opportunities for comparative analyses of species declines through time. However, for most orchid species we still lack population data and there have been few studies that have focused on the environmental factors and species traits associated with the decline of orchid sites and species numbers.