期刊
PLANT DISEASE
卷 91, 期 12, 页码 1591-1599出版社
AMER PHYTOPATHOLOGICAL SOC
DOI: 10.1094/PDIS-91-12-1591
关键词
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The standard Pythium selective medium PARP (pimaricin + ampicillin + rifampicin + pentachloronitrobenzene [PCNB] agar), was modified by replacing PCNB and pimaricin with other antifungal agents. Several antifungal agents such as fluazinam, miconazole, 2,4,5,6-tetrachloroisophthalonitrile (TPN), iminoctadine triacetate, tolclofos-methyl, captan, and nystatin, initially were screened for effects on Pythium growth. Based on these results, the following three media were developed: PARF (pimaricin + ampicillin + rifampicin + fluazinam agar), NARF (nystatin + ampicillin + rifampicin + fluazinam agar), and NARM (nystatin + ampicillin + rifampicin + miconazole agar). New media were comparable with PARP on yield of naturally occurring Pythium spp. from two different types of soil using the soil-dilution plating technique. PARF and NARF were significantly better than PARP on inhibition of non-pythiaceous microbes on the soil-dilution plates, but were significantly lower than PARP on the rate of mycelial growth of six of eight isolates belonging to seven species of Pythium. NARM was equivalent to PARP on inhibition of non-pythiaceous microbes except for Fusarium oxysporum, and was significantly better than PARP on rate of mycelial growth of five of eight isolates of Pythium.
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