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Author: Job Kuijt
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 378
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Book Description
Author: Job Kuijt
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 378
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Book Description
Author: Juan Tun-Garrido
Publisher:
ISBN:
Category :
Languages : en
Pages : 169
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Author:
Publisher:
ISBN:
Category : Plants
Languages : en
Pages : 378
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Book Description
Author: Clay Carter
Publisher: Frontiers Media SA
ISBN: 2889459969
Category :
Languages : en
Pages : 262
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Book Description
The number of currently known, described and accepted plant species is ca 374,000, of which approximately 295,00 (79%) are angiosperms. Almost 90% of this huge number of flowering plants is pollinated by animals (mostly insects) via nectar-mediated interactions. Notably, three-fourths of the leading global crop plants produce nectar and are animal pollinated, which is estimated to account for one-third of human food resources. Nectar can also be produced on tissues outside of flowers, by so-called extrafloral nectaries, and commonly mediate interactions with ‘body-guard’ ants and other pugnacious insects that defend the plant from herbivores. Extrafloral nectar is present in almost 4,000 plant species, a majority of them in the angiosperms. This brief summary on the occurrence of nectar in the plant kingdom is just to highlight that nectar has a fundamental role in two basal functions that allow the maintenance of our ecosystems: sexual plant reproduction and protection of plants from herbivory. Despite playing essential ecological and evolutionary functions, our current knowledge about nectar is largely incomplete; however, new research directions and perspectives on nectaries and nectars have arisen in recent years. In the last two decades, there were only a few ‘moments’ in which nectar was the main character in international meetings or in published books. In 2002, the first (and only) international meeting “Nectar and nectary: from biology to biotechnology” dedicated exclusively to nectar and nectaries was held in Italy (Montalcino, Siena) and in 2003 the proceedings were published in a special volume of Plant Systematics and Evolution (238, issue 1-4). In 2007, the book Nectar and Nectaries was published (Springer) with most of the contributions provided by authors that attended the meeting in Italy. Another book dedicated to nectar was published in 2015 (Nectar: Production, Chemical Composition and Benefits to Animals and Plants, Nova Science Publishers) covering aspects mainly related to nectar chemical composition and plant-pollinator interactions. Similarly, symposia focused on nectar have been organized within the International Botanical Congress in 2011 and 2017. Considering that the last few years has yielded essential developments in the understanding of nectar biology, we thought now is the moment to further stimulate research on this important topic. This aim has been met through 18 papers published in our Research Topic New Perspectives on the Biology of Nectaries and Nectars, with subjects spanning evolution and ecology to nectar chemistry and nectary structure.
Author: Daniel M. Joel
Publisher: Springer Science & Business Media
ISBN: 3642381464
Category : Science
Languages : en
Pages : 519
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Book Description
This book was written in response to significant recent advances in understanding the mechanisms of parasitism in the Orobanchaceae, and breakthroughs in the control of the parasitic weeds Striga and Orobanche. It consists of 26 contributions by internationally recognized leading scientists. The main book chapters are grouped into two parts: · Part I – The Orobanchaceae and Their Parasitic Mechanisms · Part II – The Weedy Orobanchaceae and Their Control The first part provides cutting-edge information on all key aspects of plant parasitism, such as the structure, development and function of the haustorium; nutrient transfer and the physiology of the parasite-host association; host reaction to parasitic plants; seed production and germination; the strigolactones and host-parasite signaling mechanisms; the parasite genome, phylogenetics, evolution and epigenetics; and ecology. Topics of the second part include: the problem posed by the weedy parasites; population diversity and dynamics; molecular diagnosis of seed banks; and detailed discussion of the various management strategies, including agronomic, chemical and biotechnological approaches, as well as host breeding for resistance, allelopathy and biological control. This book is intended for plant scientists, university lecturers and students, agronomists and weed specialists, breeders and farmers, extension personnel and experts in tropical and subtropical agriculture.
Author: Job Kuijt
Publisher: Springer
ISBN: 3319092960
Category : Science
Languages : en
Pages : 209
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Book Description
In the present volume taxonomic treatments including descriptions of and keys to the families and genera for the orders Santalales and Balanophorales are offered, the former group here comprising 12 families with 162 genera and about 2100 species, and the latter with the single family Balanophoraceae composed of 16 genera and about 42 species. The contentious family classification of Santalales has been thoroughly revised against the background of previous classifications as well as available structural and molecular evidence, and also the classification of Balanophoraceae has been carefully updated. Santalales are predominantly hemiparasites connected with either the branches or the roots of other green land plants, whereas Balanophoraceae are holoparasites that form terrestrial tubers attached to the roots of woody hosts. In both orders, parasitism has led to considerable reductions of the vegetative and reproductive organs and detailed descriptions are given on the initiation of ramal and terrestrial parasitism in Santalales and the haustorial connection and tissue continuity between host and parasite in both groups. The dramatic reduction of the vegetative body in Balanophoraceae, which may lack all vegetative organs typically found in green land plants, has promoted studies in the field of developmental morphology. Thus, the volume not only provides an overview of the diversity of the plant groups treated therein, but also points to the interesting biological peculiarities that have evolved in connection with their singular lifestyle.
Author: Aruna D. Weerasooriya
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 192
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Book Description
"The genus Mitrephora (Annonaceae) comprises 47 species of small to medium-sized trees, growing in tropical lowland and submontane forests throughout Southeast Asia. The centers of diversity lie in Borneo, where there are 12 species, and the Philippines, where there are 11 species. The flowers are pendent and hermaphroditic, with two whorls of petals, of which the outer petals are larger. The inner petals are apically con-nivent over the productive structures, forming a partially enclosed pollination chamber with small apertures between the basal claws of the petals that enable entry by pollinators. A field study of the pollination ecology of M. heyneana in Sri Lanka (the first such study for the genus) revealed pollination by small nitidulid beetles, although it is possible that other species may be fly-pollinated. This monograph is the first comprehensive taxonomic revi-sion of the genus. The work is based on a comprehensive study of comparative morphology and anatomy, including a survey of previously published work. Conservation assessments are provided for each species, according to current IUCN Red List categories and criteria. All species are mapped and many are illustrated with line drawings and/or photographs. Separate keys for flowering and fruiting material are included, as well as regional keys. Seven new species (M. amdjahii, M. endertii, M. kostermansii, M. multifolia, M. sorsogonensis, M. sundaica, and M. uniflora) and one new combination (M. macrocarpa) are proposed"--Publisher's description.
Author: Maarten J. M. Christenhusz
Publisher: University of Chicago Press
ISBN: 022652292X
Category : Gardening
Languages : en
Pages : 801
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Book Description
Evolution of land plant -- Plants and human culture -- Naming plants -- Classification and the angiosperm phylogeny group
Author: Judith X. Becerra
Publisher: University of Arizona Press
ISBN: 0816551952
Category : Nature
Languages : en
Pages : 273
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Book Description
Predominantly native to the U.S. Southwest, Mexico, and the Caribbean, the various species of Bursera have been prized throughout history for their distinctive aromas, medicinal properties, workable wood, and attractive appearance. Despite its extensive past and current use as incense in religious ceremonies, and its resourceful antiseptic ability to treat a range of maladies, no comprehensive book exists on this vital yet overlooked plant. Highlighting bursera’s importance and impact within the desert Southwest and Mexico, this volume will be the first book to describe the ecology, evolution, ethnobotany, and peculiar chemistry of the many species of Bursera. In the United States, Bursera is represented by the short, contorted, and aromatic elephant tree of the hot Sonoran Desert and the stately and colorful gumbo limbo of southern Florida, while in the torrid lowlands of southern Mexico, the engines of evolution have produced forests dominated by dozens of species of Bursera, each with a peculiar ecological slot. This evolutionary tableau presents a complicated sex life that puzzles scientists. Recent research also reveals a gripping narrative of an epic struggle between trees and the insects that would subsist on their leaves: the insects seeking to exploit a food resource, the trees reacting with ever-changing, dramatic counter strategies. In addition to the fascinating and intricate workings of the genus’s ecological adaptations, burseras play a formative role in the lives of indigenous populations. Native peoples relish the plants’ aromatic resin, workable wood, and often colorful bark as a source for endless human applications. Written in an engaging style, enhanced with two hundred color photographs, and complete with a compendium of species descriptions, this book will be an essential reference on a significant North American plant.
Author: Council of Scientific & Industrial Research (India)
Publisher:
ISBN:
Category : Botany
Languages : en
Pages : 174
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Book Description
