Interactions of Arbuscular Mycorrhizal Fungi with Bean Plants Under Flooding Conditions. (5425)
Authors:
S. Sah* - Florida International University S. Mendiola - Florida Intl. University S. Reed - USDA-ARS, Miami, FL
K. Jayachandran - Florida Intl. University S. Sah* - Florida International University
Abstract:
Flooding is one of the common problems that affect crop production in South Florida. Arbuscular Mycorrhizal Fungi (AMF) is well known for several benefits to hundreds of crop plants including green bean (Phaseolus vulgaris L.). Our objective is to study the interactions between AMF and green bean under flooded conditions and evaluate the benefits derived by the green bean plants. A greenhouse
experiment was conducted to determine the tolerance of green bean to flooding at different growth stages. A native AMF culture, a commercial AMF inoculum and uninoculated controls were set-up in a randomized block design with three
replications. The inoculum was mixed 5 cm below the surface and green bean seeds were planted 2.5 cm above the inoculum. Watering and fertilization occurred daily.
During the study, plants were subjected to flooding for 8 hours every seven days.
Plants were harvested after late vegetative stage, early reproductive and late reproductive stage. Plant height, plant biomass, root architecture, mycorrhizal colonization, total carbon, nitrogen, and phosphorus were measured. Statistical analysis was conducted using the General Linear Model of SAS. Flooding did not affect mycorrhizal colonization. Further studies are in progress to understand the role of AMF under flooded conditions.
Speaker Information: Seema Sah, Florida International University, Environmental Studies Department11200 SW 8TH STFlorida International University, Miami, FL 33199; Phone: 305-348-6553; E-mail: [email protected]
Session Information: Tuesday, November 2, 2004, 8:00 AM-10:00 AM Presentation Start: 8:00 AM (Poster Board Number: 2607)
