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Accueil du site → Master → Etats Unis → 1978 → Reproductive strategies in desert annuals : test of a fixed germination hypothesis

New Mexico State University (1978)

Reproductive strategies in desert annuals : test of a fixed germination hypothesis

Freas, Kathy

Titre : Reproductive strategies in desert annuals : test of a fixed germination hypothesis

Auteur : Freas, Kathy

Université de soutenance : New Mexico State University

Grade : Master of Science (MS) 1978

Résumé
In order to optimize reproduction in unpredictable environments, Cohen has hypothesized that desert annual plant populations maintain a constant proportion of germinating seeds. The two mechanisms by which a population might maintain this germination proportion, constant at the level of the individual, or a constant population mean, have been investigated through a series of germination tests with the annual species, Pectis angustifolia Torr. (Lemonweed). Results indicate that neither of these mechanisms function to maintain a constant germination proportion. Rather, the data suggest an alternative optimal reproductive strategy by which germination proportion increases in response to increased precipitation

Mots Clés : annual plant, germination, dissertation, dissertations, germination, annual plant, reproduction, annual plant,

Présentation (Jornada NMSU)

Page publiée le 12 mai 2017