introduction of some important antagonistic bacteria affecting on damping-off of canola.three hundred ninety five bacterial isolates were collected from canola root and rhizosphere in golestan, mazandaran, guilan and tehran provinces. at first, antagonistic effect of bacterial isolates on rhizoctonia solani was studied using dual culture test assay. the results showed that 60 isolates had the ability to inhibit the growth of fungi on pda medium. on the basis of the biochemical, physiological and morphological tests, isolates pf41, pf51, pf411 and pf412 were identified as pseudomona ...201223878984
strain-specific scar markers for the detection of trichoderma harzianum as12-2, a biological control agent against rhizoctonia solani, the causal agent of rice sheath order to identify a specific marker for t. harzianum as12-2, a strain capable of controlling rice sheath blight caused by rhizoctonia solani, up-pcr was performed using five universal primers (up) both separately and in pairwise combinations. the application of two up primers resulted in the amplification of unique fragments from the genomic dna of t. harzianum as12-2, clearly distinguishing it from other trichoderma strains. the unique fragments had no significant sequence homology with any ...201121388921
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