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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Colbaugh, P. F.;
Engelke, M. C. |
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| Author Affiliation: | Texas Agric. Exp. Station |
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| Title: | Pythium blight of inoculated zoysiagrasses, 1988 |
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| Source: | Biological and Cultural Tests for Control of Plant. Vol. 8, 1993, p. 125. |
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| Publishing Information: | St. Paul, MN: The American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Pythium aphanidermatum; Zoysia; Pythium diseases
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| Abstract/Contents: | "Thirty-six experimental and four commercial zoysiagrasses were examined for resistance to Pythium foliar blight. Four soil core samples of each of the 40 zoysiagrasses were transferred into individual plastic cups (8 cm dia) and maintained on a greenhouse bench one month prior to inoculation with Pythium aphanidermuatum. Genotypes TAES3356 and TAES3368 were hybrid zoysias selected for drought resistance and low fertility requirements while Meyer, Emerald, El Toro, Belair and FC13521 were commercially available varieties. After one mon in the greenhouse, the grasses were placed randomly in plastic vegetable crispers and each inoculated with two agar discs containing two turfgrass isolates of P. aphanidermatum known to cause severe foliar blighting. Each of the cups containing the inoculated test grasses were covered with snap-on clear plastic lids with four aeration holes and maintained in a walk-in growth chamber where daily misting, temperature (27 C) and light conditions 24 hr (200 fc) favored Pythium blight infection over a seven day period. Results of inoculations after seven days demonstrated good Pythium blight resistance among the germplasm lines and commercial varieties studied. The disease resistance of zoysiagrasses was indicated by the large number of genotypes (18) with less than 10% foliar blighting. Only four the germplasm lines were damaged more than 50%. The commercial varieties Meyer and Emerald were numerically more resistant to Pythium blight than El Toro, Belair and FC 13521 which also ranked among the more resistant cultivars in the study. The germplam [germplasm] lines TAES3357, TAES3365, TAES3364, TAES3358, DALZ8508, and DALZ8517 ranked among the most resistant of experimental zoysiagrasses used in the study." |
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| Language: | English |
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| References: | 0 |
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| Note: | Table
This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Colbaugh, P. F., and M. C. Engelke. 1993. Pythium blight of inoculated zoysiagrasses, 1988. Biol. Cult. Tests Control Plant Dis. 8:p. 125. |
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