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Conifer Reproductive Biology (Paperback, Softcover reprint of hardcover 1st ed. 2009)
Loot Price: R1,469
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Conifer Reproductive Biology (Paperback, Softcover reprint of hardcover 1st ed. 2009)
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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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