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El estudio de las glumifloras efectuado en el Pramo Loma Redonda MridaVenezuela, mostr el predominio de los gneros Agrostis, Calamagrostis y Poa de la familia Poaceae y Carex en Cyperaceae. El ensayo de reduccin de acetileno, evidenci que 21 especies (87,5%) de un total de 24 recolectadas, establecen simbiosis asociativas con bacterias diazotrficas microaeroflicas. Los suelos hidromrficos y las pocas lluviosas incrementan el nmero de especies vegetales, el porcentaje de races asociadas con bacterias fijadoras de nitrgeno y la tasa de la actividad reductora de acetileno de los segmentos radicales, comparados con los de las plantas que crecen en suelos relativamente secos o poca de sequa. La poblacin rizosfrica manifiesta actividad nitrogenasa en cultivos libres de nitrgeno, con cido mlicoglucosa; sin embargo, las asociaciones de Agrostis trichodes, Poa annua y Poa sp. utilizan tambin cidos orgnicos como fuentes carbonadas exclusivas. El 71,4% de las glumifloras, presentan la mayor parte de la poblacin diazotrfica sobre la superficie radical y en la endorrizsfera, el 21,4% slo en la parte superficial y el 7,14%, no mostr actividad nitrogenasa.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer,
birth defects, or other reproductive harm.
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