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Publikováno v:
The American Biology Teacher. 56:420-423
Publikováno v:
American Journal of Botany. 65:63-69
Ceanothus greggii var. perplexans is a common shrub in the southern California chaparral. Clusters of nodules found under the canopy of this species are modified roots which contain a nitrogen-fixing endophyte, Frankia ceanothi (Actinomycetales), wit
Publikováno v:
Agronomy Journal. 65:429-433
The acetylene reduction assay has been used extensively to detect and measure nitrogenase activity of free-living microorganisms, excised legume and non-legume nodules, and root systems, soil cores, and entire nodulated legume plants removed from the