Pathogenicity, host specificity and anastomosis groups of Rhizoctonia spp. isolated from soils in Israel

Meira Ichielevich-Auster; B. Sneh; Y. Koltin; I. Barash

doi:10.1007/BF02980887

Pathogenicity, host specificity and anastomosis groups of Rhizoctonia spp. isolated from soils in Israel

Meira Ichielevich-Auster, B. Sneh, Y. Koltin, I. Barash

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Abstract

One hundred and twenty-nine isolates of Rhizoctonia spp. were obtained from soil samples in Israel and from culture collections in the U.S.A. and Japan. The isolates varied in host range and disease severity when tested on six to eleven different host plants. Approximately 30% of the isolates were nonpathogenic to all the host plants tested. Mycelial growth rate of the nonpathogenic strains did not differ significantly from that of the virulent isolates. The 107 Israeli isolates represented anastomosis groups (AG) 1, 2, 3, 4, 5 and 6 of R, solani, two groups of R. zeae, and three groups of binucleate Rhizoctonia AG: A, F and K.

Original language	English
Pages (from-to)	103-112
Number of pages	10
Journal	Phytoparasitica
Volume	13
Issue number	2
DOIs	https://doi.org/10.1007/BF02980887
State	Published - Jun 1985

Keywords

Rhizoctonia solani
anastomosis groups
hypovirulent strains

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abstract = "One hundred and twenty-nine isolates of Rhizoctonia spp. were obtained from soil samples in Israel and from culture collections in the U.S.A. and Japan. The isolates varied in host range and disease severity when tested on six to eleven different host plants. Approximately 30% of the isolates were nonpathogenic to all the host plants tested. Mycelial growth rate of the nonpathogenic strains did not differ significantly from that of the virulent isolates. The 107 Israeli isolates represented anastomosis groups (AG) 1, 2, 3, 4, 5 and 6 of R, solani, two groups of R. zeae, and three groups of binucleate Rhizoctonia AG: A, F and K.",

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AU - Sneh, B.

AU - Koltin, Y.

AU - Barash, I.

PY - 1985/6

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AB - One hundred and twenty-nine isolates of Rhizoctonia spp. were obtained from soil samples in Israel and from culture collections in the U.S.A. and Japan. The isolates varied in host range and disease severity when tested on six to eleven different host plants. Approximately 30% of the isolates were nonpathogenic to all the host plants tested. Mycelial growth rate of the nonpathogenic strains did not differ significantly from that of the virulent isolates. The 107 Israeli isolates represented anastomosis groups (AG) 1, 2, 3, 4, 5 and 6 of R, solani, two groups of R. zeae, and three groups of binucleate Rhizoctonia AG: A, F and K.

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Pathogenicity, host specificity and anastomosis groups of Rhizoctonia spp. isolated from soils in Israel

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