The Various Contrivances by which Orchids are Fertilised by Insects PDF Download
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Author: Charles Darwin
Publisher:
ISBN:
Category : Fertilization of plants
Languages : en
Pages : 326
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Book Description
Author: Charles Darwin
Publisher:
ISBN:
Category : Fertilization of plants
Languages : en
Pages : 326
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Book Description
Author: K.G. Mukerji
Publisher: Springer Science & Business Media
ISBN: 1461542650
Category : Science
Languages : en
Pages : 339
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Book Description
`The fundamental problem the world faces today, is the rapidly increasing pressure of population on the limited resources of the land. To meet the ever increasing demands of expanding populations, agricultural production has been raised through the abundant use of inorganic fertilizers, the adoption of multicropping systems and liberal application of chemical pesticides (fungicides, bactericides, etc. ). Though the use of chemicals has increased the yield dramatically, it has also resulted in the rapid deterioration of land and water resources apart from wastage of scarce resources. This has adversely affected the biological balance and lead to the presence of toxic residues in food, soil and water in addition to imposing economic constraints on developing countries.' (From the Preface) Mycorrhizal Biology addresses the global problem of land degradation and the associated loss of soil productivity and decline in soil quality caused by exploitative farming practices and poor management in developing countries, and the far reaching socio-economic and ecological consequences of its impact on agricultural productivity and the environment. In the light of a need for sustainable development, a new system of productive agriculture, to ensure the efficient management of agricultural inputs for long term high crop productivity with minimum damage to the ecological and socio-economic environment is essential. The management of mycorrhizal fungi will form a significant part of such a system and this work investigates the key association of plant roots with mycorrhizal fungi, known to benefit plants under conditions of nutritional and water stress and pathogen challenge and analyses the developments in our understanding of the genetic loci that govern mycorrhiza formation.
Author: Jean Claessens
Publisher:
ISBN:
Category : Orchids
Languages : en
Pages : 439
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Book Description
Author: Retha Edens-Meier
Publisher: University of Chicago Press
ISBN: 022617364X
Category : Science
Languages : en
Pages : 440
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Book Description
For biologists, 2009 was an epochal year: the bicentennial of Charles Darwin’s birth and the 150th anniversary of the publication of a book now known simply as The Origin of Species. But for many botanists, Darwin’s true legacy starts with the 1862 publication of another volume: On the Various Contrivances by Which British and Foreign Orchids Are Fertilised by Insects and on the Good Effects of Intercrossing, or Fertilisation of Orchids. This slim but detailed book with the improbably long title was the first in a series of plant studies by Darwin that continues to serve as a global exemplar in the field of evolutionary botany. In Darwin’s Orchids, an international group of orchid biologists unites to celebrate and explore the continuum that stretches from Darwin’s groundbreaking orchid research to that of today. Mirroring the structure of Fertilisation of Orchids, Darwin’s Orchids investigates flowers from Darwin’s home in England, through the southern hemisphere, and on to North America and China as it seeks to address a set of questions first put forward by Darwin himself: What pollinates this particular type of orchid? How does its pollination mechanism work? Will an orchid self-pollinate or is an insect or other animal vector required? And how has this orchid’s lineage changed over time? Diverse in their colors, forms, aromas, and pollination schemes, orchids have long been considered ideal models for the study of plant evolution and conservation. Looking to the past, present, and future of botany, Darwin’s Orchids will be a vital addition to this tradition.
Author: Philippe Grandcolas
Publisher: John Wiley & Sons
ISBN: 1786302659
Category : Science
Languages : en
Pages : 242
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Book Description
This book's aim is to obtain and organize knowledge about the diversity of living things. Their epistomological and methodological fundamentals are explained in the framework of the biology of evolution. The methods of construction and use of phylogenetic trees are presented as well as the classification and description of taxa with the nomenclature rules.
Author:
Publisher:
ISBN:
Category : Ecology
Languages : en
Pages : 302
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Book Description
Author: Nelis A. Van Der Cingel
Publisher: CRC Press
ISBN: 9789054104865
Category : Science
Languages : en
Pages : 342
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Book Description
This work follows on from the 1995 publication on European orchids. The atlas is now completed with a second part, containing data on the pollination of orchids of the continents of America, Asia, Africa (including Madagascar) and Australia (including New Zealand).;The first part of the book is adapted from the general account of the previous publication and is extended with chapters on taxonomy and pollinators. The general account deals with such things as the history, evolution, morphology, chemistry and genetics of orchid pollination. The second part gives a systematic account for each continent of all well known details. The text is designed to have relevance for orchid lovers whether professional or amateur.
Author: Michael Proctor
Publisher: Timber Press (OR)
ISBN:
Category : Nature
Languages : en
Pages : 502
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Book Description
"This is a brand new, fully updated edition of the natural history classic first published in 1973 as The Pollination of Flowers." "The importance of insects in pollinating flowers is today so well known it is easy to forget that it was discovered little more than two centuries ago: before that, it was believed that the concern of bees with flowers was simply a matter of collecting honey." "But the methods by which pollen reaches the female flower, enabling fertilisation and seed production to take place, include some of the most varied and fascinating mechanisms in the natural world. The Natural History of Pollination describes all the ways in which pollination is brought about: by wind, water, birds, bats and even mice and rats; but principally by a great diversity of insects in an amazing range of ways, some simple, some bizarre." "This book is a unique introduction to a complex yet easily accessible subject of great fascination."--BOOK JACKET.Title Summary field provided by Blackwell North America, Inc. All Rights Reserved
Author:
Publisher:
ISBN:
Category : Entomology
Languages : en
Pages : 548
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Book Description
Author: K. Faegri
Publisher: Elsevier
ISBN: 1483293033
Category : Science
Languages : en
Pages : 257
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Book Description
A completely revised and rewritten edition of this comprehensive survey of the botanical problems of pollination ecology approached from both a theoretical and a practical viewpoint. Examples are drawn from all geographical areas where pollination has been studied and general principles are illustrated by a number of concrete examples. Introductory chapters survey the technical problems and draw comparisons with spore dissemination in cryptogams and pollination in gymnosperms. The following chapters deal with angiosperm pollination and are divided into three parts: organs involved in pollination, flower types and pollinator activities
