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

Accueil du site → Master → Etats Unis → 1973 → Endomycorrhizae on desert plants with primary emphasis on Prosopis juliflora

New Mexico State University (1973)

Endomycorrhizae on desert plants with primary emphasis on Prosopis juliflora

Wilson, Steven Allen

Titre : Endomycorrhizae on desert plants with primary emphasis on Prosopis juliflora

Auteur : Wilson, Steven Allen

Université de soutenance : New Mexico State University

Grade : Master of Science (MS) 1973

Résumé
Roots of thirteen different species of desert plants were examined for the presence of mycorrhizae. Eleven of the thirteen plants contained endomycorrhizae, while none of the plants were found to possess ectomycorrhizae. Prosopis juliflora, Yucca elata, Opuntia sp., and Larrea tridentata contained sufficient endomycorrhizae in the root tissue to augment or assist the plants absorptive system. A more extensive study was performed on P. juliflora roots from greenhouse and field grown plants of approximately the same size and age to determine the distribution of endomycorrhizae within these roots. Endomycorrhizae were found in all the major branches from the mesquite taproot along with secondaries and tertiaries located in the top 25 cm of soil, but were never found in the taproot itself or the stem. Mycorrhizal spore distribution around P. juliflora was also determined. Two different spores were found in the soil around the mesquite roots. The distribution of Glomus fasciculatus spores in the soil followed closely the concentration and distribution of the mycorrhizae in the root. The results obtained to establish this relationship are diagrammatically summarized. Distribution of Glomus macrocarpus spores appeared to indicate no relationship of this spore with the concentration and distribution of mesquite roots.

Mots Clés : endomycorrhizae, Prosopis, fungi, endomycorrhizae, Prosopis,

Jornada NMSU

Présentation

Page publiée le 10 mai 2016, mise à jour le 25 décembre 2019