Conifer Reproductive Biology

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Conifer Reproductive Biology

Conifer Reproductive Biology
Author :
Publisher : Springer Science & Business Media
Total Pages : 174
Release :
ISBN-10 : 9781402096013
ISBN-13 : 1402096011
Rating : 4/5 (011 Downloads)

Book Synopsis Conifer Reproductive Biology by : Claire G. Williams

Download or read book Conifer Reproductive Biology written by Claire G. Williams and published by Springer Science & Business Media. This book was released on 2009-05-19 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 revolutionary idea of alternation of generations. This alternation between diploid and haploid generations was eventually to become one of the key unifying ideas in plant evolution. Dr. Williams points out that alter- tion of generations in conifers shows strong divergence in the evolution of male and female gametes, as well as in the synchronicity of male and female gamete development. How are these coordinated to achieve fertilization? Books on conifer reproduction are all too rare. The only major work in the last generation was Hardev Singh’s 1978 Embryology of Gymnosperms, a book that summarized the previous century’s work. Being a book primarily about embry- ogy, it stopped short of putting conifer reproduction in a genetic or evolutionary context.


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