Une pure merveille !
Un roman d'une grande beauté, drôle, fin, extrêmement lumineux sur des sujets difficiles : la perte de
l'être aimé, la dureté de la vie et la tristesse qu'on barricade parfois... Elise franco-japonaise,
orpheline de sa maman veut poser LA question à son père et elle en trouvera le courage au fil des pages,
grâce au retour de sa grand-mère du japon, de sa rencontre avec son extravagante amie Stella..
Ensemble il ne diront plus Sayonara mais Mata Ne !
The evolution of seeds has contributed to one of the most astonishing explosions of biodiversity in history. Indeed, most plants employ seeds as reproductively...
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The evolution of seeds has contributed to one of the most astonishing explosions of biodiversity in history. Indeed, most plants employ seeds as reproductively crucial structures. Everything about seeds involves timing. Seeds result from fertilization occurring when conditions are favorable, i.e., after sufficient resources have been devoted to reproductive tissues. Furthermore, seeds help ensure that there are the necessary stored materials for the early growth and development of the next generations of plants. And finally, seeds allow the next generation to wait in a form of suspended animation until conditions for the next generation are once again favorable.
This book about seeds focuses upon their two most important functions-dormancy and germination. The topics covered include the types of dormancy, theories of the relationship between dormancy and germination, the timing of germination, the various factors that control germination, and the general aspects of germination in different sorts of habitats. Ecologists, plant scientists, agriculturists, foresters-indeed, anyone interested in plants and their life cycles will want to add this title to his or her library.
Sommaire
Ecologically meaningful germination studies
Types of seed dormancy
Germination ecology of seeds with nondeep physiological dormancy
Germination ecology of seeds with morphophysiological dormancy
Germination ecology of seeds with physical dormancy
Germination ecology of seeds in the persistent seed bank
Causes of within-species variations in seed dormancy and germination characteristics
A geographical perspective on germination ecology: tropical and subtropical zones
A geographical perspective on germination ecology: temperate and arctic zones
Germination ecology of plants with specialized life cycles and/or habitats
Biogeographical and evolutionary aspects of seed dormancy.