Genetic diversity in Atriplex sagittata: the tole of heterocarpy, seed bank dynamics and germination time

Name: Genetic diversity in Atriplex sagittata: the tole of heterocarpy, seed bank dynamics and germination time
Researchers: Mandák Bohumil (researcher)
Project Type: B - national grants (GA ČR, GA AVČR)
Realization from: 2002
Realization to: 2005
Summary: Seeds of Atriplex sagittata do not germinate immediatelly after dispersal, but may remain indefinitely in a dormant but viable stage. However, the cause and consequence of this variation remain poorly understood. In this project, we want to investigate the extent to which seed genotype from particular fruit type of Atriplex sagittata differentially germinate and establish. We ask whether there are genetic differences between plants derived from seeds of particular types that germinate under different ecological gradients. Hence, if intraspecific germination and establishment are influenced by genotype of a seed, then seeds that successfully germinate may differ genetically from those remaining formant in the soil. The basic question is to what extent does the genetic structure of seed bank differ from genetic structure of populations at various phases of the life cycle?

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