Genetic variation in response to elevated CO2 in three grassland perennials — a field experiment with two competition regimes

作者: Thomas Steinger , Claire Lavigne , Andreas Birrer , Kathleen Groppe , Bernhard Schmid

DOI: 10.1016/S1146-609X(97)80013-6

关键词: Prunella grandifloraCalcareous soilsEcologyPerennial plantBiologyBotanyCompetition (biology)Prunella vulgaris

摘要: Nous avons etudie la variation intraspecifique de reponse a l'augmentation des concentrations CO 2 dans l'atmosphere chez 3 especes plantes (Bromus erectus, Prunella vulgaris, P. grandiflora) une prairie calcaire. Des genotypes chaque espece ont ete cultives communautes multispecifiques et, sous pression competition reduite, tubes enterres le sol. La croissance est reduite les artificielles, mais aucun effet significatif du n'a observe sur traits mesures. On trouve interactions significatives genotype-CO especes, lorsque sont cultivees tubes, avec reduite. Aucune interaction trouvee pour memes multispecifiques, ce qui indique un recouvrement genetique par forte environnementale. De plus, aucune correlation observee entre reponses au identiques, individuellement en ou multispecifiques. Ce resultat incite prudence quant possibilite predire changements evolutifs induits partir donnees provenant individuellement.

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