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Plants have been a source of medicines and have played crucial role for human health. Despite tremendous advances in the field of synthetic drugs and antibiotics, plants continue to play a vital role in modern as well as traditional medicine across the globe. In even today, one-third of the world’s population depends on traditional medicine because of its safety features and ability to effectively cure diseases. This book presents a comprehensive guide to medicinal plants, their utility, diversity and conversation, as well as biotechnology. It is divided into four main sections, covering all aspects of research in medicinal plants: biodiversity and conservation; ethnobotany and ethnomedicine; bioactive compounds from plants and microbes; and biotechnology. All sections cover the latest advances. The book offers a valuable asset for researchers and graduate students of biotechnology, botany, microbiology and the pharmaceutical sciences. It is an equally important resource for doctors (especially those engaged in Ayurveda and allopathy); the pharmaceutical industry (for drug design and synthesis); and the agricultural sciences. .

Conservation biology. --- Ecology . --- Plant systematics. --- Plant taxonomy. --- Plant breeding. --- Plant biochemistry. --- Conservation Biology/Ecology. --- Plant Systematics/Taxonomy/Biogeography. --- Plant Breeding/Biotechnology. --- Plant Biochemistry. --- Phytochemistry --- Plant biochemistry --- Plant chemistry --- Biochemistry --- Botany --- Phytochemicals --- Plant biochemical genetics --- Crops --- Agriculture --- Breeding --- Botanical classification --- Botanical systematics --- Botanical taxonomy --- Classification --- Plant biosystematics --- Plant classification --- Plant systematics --- Plant taxonomy --- Systematic botany --- Systematics (Botany) --- Taxonomy, Plant --- Plant taxonomists --- Balance of nature --- Biology --- Bionomics --- Ecological processes --- Ecological science --- Ecological sciences --- Environment --- Environmental biology --- Oecology --- Environmental sciences --- Population biology --- Ecology --- Nature conservation --- Plants --- Medicinal plants. --- Drug plants --- Plants, Useful --- Botanical drug industry --- Botany, Medical --- Materia medica, Vegetable --- Psychotropic plants --- Plants, Medicinal. --- Healing Plants --- Medicinal Plants --- Pharmaceutical Plants --- Herbs, Medicinal --- Medicinal Herbs --- Healing Plant --- Herb, Medicinal --- Medicinal Herb --- Medicinal Plant --- Pharmaceutical Plant --- Plant, Healing --- Plant, Medicinal --- Plant, Pharmaceutical --- Plants, Healing --- Plants, Pharmaceutical --- Pharmaceutical Preparations --- Phytotherapy --- Medicine, Traditional --- Pharmacognosy --- Ethnopharmacology --- Herbal Medicine --- Plantes medicinals --- Herbes medicinals --- Plantes remeieres --- Plantes útils --- Àloes --- Dulcamara --- Equinàcies --- Espígols --- Fitocosmètics --- Valeriana --- Botànica mèdica --- Fitoteràpia --- Tisanes --- Ecology. --- Botanical chemistry.

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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.

Nature protection --- Systematics. Taxonomy. Nomenclature --- General ecology and biosociology --- Plant physiology. Plant biophysics --- Phytomorphology. Phytoanatomy --- systematische plantkunde --- plantenfysiologie --- biodiversiteit --- landschapsecologie --- biogeografie --- planten