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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Johnson-Cicalese, Jennifer |
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| Title: | Screening turf-type buffalograss germplasm for resistance to mealybugs |
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| Source: | Turfgrass Research Report for 1994 [Nebraska]. 1994, p. 33. |
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| Publishing Information: | [Lincoln, NE]: University of Nebraska |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Bouteloua dactyloides; Germplasm; Insect resistance; Pseudococcus; Insect infestation; Parasites; Trials
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| Geographic Terms: | Nebraska |
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| Abstract/Contents: | "In recent studies with turf-type buffalograss [Buchloë dactyloides (Nutt) Engelm.], two species of mealybugs [Tridiscus sporoboli (Cockerell) and Trionymus sp.] have emerged as potentially serious pests. Therefore, 72 buffalograss selections were screened for resistance to these mealybugs in five greenhouse screening trials. Plugs were removed from field plots, planted in 15 cm pots, and inoculated with mealybug-infested leaf clippings. Plants were evaluated for mealybug infestation and differences in resistance were found. 'Prairie' and '609' consistently showed excellent resistance to mealybugs, while several experimental selections, including 90-157 and 84-512, exhibited moderate resistance. Most selections were moderately susceptible and 85-97 was highly susceptible. Field mealybug infestations were also evaluated and found to be highly variable, both within and among plots. However, in most cases selections evaluated in the field showed similar responses as in greenhouse trials. Pubescence was positively correlated with susceptibility, and a glabrous leaf surface is suggested as a possible mechanism of resistance. These studies also found several parasitoid wasps that may have a significant impact on mealybug populations." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Johnson-Cicalese, J. 1994. Screening turf-type buffalograss germplasm for resistance to mealybugs. Turfgrass Res. Rep. Nebr. p. 33. |
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