Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Etats Unis → 2004 → Growth, reproductive phenology, and population structure in Syntrichia caninervis

University of Nevada, Las Vegas (2004)

Growth, reproductive phenology, and population structure in Syntrichia caninervis

Bonine, Mary Lynn

Titre : Growth, reproductive phenology, and population structure in Syntrichia caninervis

Auteur : Bonine, Mary Lynn

Université de soutenance : University of Nevada, Las Vegas

Grade : Master of Science (MS) 2004

Résumé
Syntrichia caninervis is a dioicous bryophyte of the arid Southwest. It exhibits a phenology and growth rate similar to the related species Tortula inermis . Mean growth rate was 0.29 mm ± 0.04 (mean and S.D.). Expressing stems had a significantly greater growth rate than non-expressing stems, but no difference was detectable between males and females. The pattern of gametangial maturation is one of rapid perichaetial development, initiating in September and becoming receptive in March ; and protracted perigonial development, initiating in October, developing to an immature state prior to over-summering, and completing maturation during the second fall and spring, with sperm dispersal from February to May. Abortion of gametangia is high Spatial patterning of the sexes is significant, but segregation values were low.

Mots clés : Ecology, Biological sciences, Botany

Search Oxford Libraries Online (SOLO)

ProQuest Dissertations Publishing

Page publiée le 8 mars 2015, mise à jour le 20 décembre 2018