Titlebook: Conifer Reproductive Biology; Claire G. Williams Textbook 2009 Springer Science+Business Media B.V. 2009 Embryo.Seed.conifers.ecology.envi

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The Diplohaplontic Life Cyclermined germline typical of the diplontic life cycle of vertebrates. This “moving interface” between vegetative and reproductive cell lineages has not been well-studied in conifers and it constitutes a fertile area for exploring adaptive response, mutational accumulation, DNA repair systems and regul

GREEN

整洁漂亮

鞠躬

Coeval

The Embryo Lethal Systemed to infer severity and distribution of lethal factors; to date, most are semi- lethal rather than fully lethal. These range from partially dominant to overdominant or perhaps balanced lethals..Some selfed embryos die at all stages of seed development but a second death pattern has been detected in

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male 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 th978-90-481-8167-4978-1-4020-9602-0

depreciate

expository

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value of conifers is significant.Includes supplementary matWhen 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

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Textbook 2009 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. S