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New Perspectives on the Biology of Nectaries and Nectars
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...
Saving Farmland
Saving Farmland shows how sustainability, ecosystems and biodiversity transcend the paradox of man-made losses. Chambers details how to overcome obstacles, choose models, identify vital farmland, build community and raise funds. Stories of commonly shared land, international trusts, regained farmland and several real heroes provide inspiration that a future is possible where local farming and sustainable development will deliver good eating - forever.--COVER.
The Shaping of Life
Biological development, how organisms acquire their form, is one of the great frontiers in science. While a vast knowledge of the molecules involved in development has been gained in recent decades, big questions remain on the molecular organization and physics that shape cells, tissues and organisms. Physical scientists and biologists traditionally have very different backgrounds and perspectives, yet some of the fundamental questions in developmental biology will only be answered by combining expertise from a range of disciplines. This book is a personal account by Professor Lionel Harrison of an interdisciplinary approach to studying biological pattern formation. It articulates the power of studying dynamics in development: that to understand how an organism is made we must not only know the structure of its molecules; we must also understand how they interact and how fast they do so.
Conifer Reproductive Biology
When it comes to reproduction, gymnosperms are deeply weird. Cycads and co- fers have drawn out reproduction: at least 13 genera take over a year from polli- tion to fertilization. Since they don’t apparently have any selection mechanism by which to discriminate among pollen tubes prior to fertilization, it is natural to w- der why such a delay in reproduction is necessary. Claire Williams’ book celebrates such oddities of conifer reproduction. She has written a book that turns the context of many of these reproductive quirks into deeper questions concerning evolution. The origins of some of these questions can be traced back Wilhelm Hofmeister’s 1851 book, which detailed the revolutio...
Somatic Cell Genetics of Woody Plants
Most forest tree species were considered recalcitrant a decade ago, but now with the improved in vitro techniques some progress has been made towards culture-of tree species. Micro propagation has been achieved from the juvenile tissues of a number of forest tree species. On the other hand, tissues from most mature trees are still very difficult to grow and differen tiate in vitro. Nevertheless, there has been slow but steady progress in the application of tissue culture technology for culture of tissues, organs, cells and protoplasts of tree species. As compared to most agricultural crops, and herbaceous plant species, trees are a different lot. They have long gene ration cycles. They are highly heterozygous and have a large reservoir of genetic variability. Because of this genetic variability, their response in vitro is also variable. On a single medium, the response of tissues from different trees (genotypes) of a single species may be quite different: some responding by induction of growth and differentiation, while others showing minimal or no growth at all. That makes the somatic cell genetics of woody plants somewhat difficult, but at the same time interesting.
‘Going Native?'
This volume offers a comparative survey of diverse settler colonial experiences in relation to food, food culture and foodways - how the latter are constructed, maintained, revolutionised and, in some cases, dissolved. What do settler colonial foodways and food cultures look like? Are they based on an imagined colonial heritage, do they embrace indigenous repertoires or invent new hybridised foodscapes? What are the socio-economic and political dynamics of these cultural transformations? In particular, this volume focuses on three key issues: the evolution of settler colonial identities and states; their relations vis-à-vis indigenous populations; and settlers’ self-indigenisation – the process through which settlers transform themselves into the native population, at least in their own eyes. These three key issues are crucial in understanding settler-indigenous relations and the rise of settler colonial identities and states.
