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| Web URL(s): | http://archive.lib.msu.edu/tic/rpr/1993/Turfgrass/65328,%20Mississippi%20State,%20Krans.PDF
Last checked: 11/20/2013
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Material Type: | Manuscript |
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| Monographic Author(s): | Tomaso-Peterson, Maria; Krans, Jeffrey |
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| Author Affiliation: | Mississippi State University |
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| Monograph Title: | Recovery of Rhizoctonia solani Resistant Creeping Bentgrass Germplasm Using the Host-Pathogen Interaction System: [1993 Annual Progress Report], 1993. |
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| Publishing Information: | [Mississippi State, Mississippi]: Mississippi State University |
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| # of Pages: | 11 |
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| Collation: | [11] pp. |
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| Abstract/Contents: | "Considerable progress has been made toward recovering Rhizoctonia solani resistant creeping bentgrass germplasm. In the laboratory, 203 plant variants were recovered from bentgrass callus/R. solani co-cultures via the Host-Pathogen Interaction System. Due to the success in recovering germplasm in the HPIS, we are able to select large numbers of variants, while maintaining a predictable production schedule of germplasm that will be subjected to additional screening in the laboratory, greenhouse and eventually in the field. Laboratory studies addressing in vitro plantlet screening against R. solani is progressing favorably. The leaves of plantlets recovered from HPIS screening were inoculated with 1 mm plugs of R. solani mycelium and incubated. Preliminary results indicate segregation of resistance among the variants. A comprehensive study has been initiated based on these findings. If this procedure proves reliable, another level of screening will be incorporated into an already intense screening procedure. Bentgrass germplasm will undergo cellular, plantlet, and whole plant screening prior to field evaluation. Our objective is take superior lines to the field and evaluate them for enhanced resistance to R. solani. Ultimately we hope to isolate and provide R. solani resistant genetic material to the available germplasm collection for the purpose of developing superior creeping bentgrass varieties. The variants we are working with at the whole plant level are being maintained in our newly acquired environmental control greenhouse (ECG). The ECG is equipped with a 3 ton heatpump air conditioner that allows us to provide optimum, stress-free environmental conditions for growing creeping bentgrass on a year round basis. Thus we can provide adequate light, optimum temperatures, humidity, and so forth while isolating the variants from various greenhouse contaminants. A fritted clay growth medium is used in propagating the variants and preparing them for the next level of R. solani screening experiments. These screenings are scheduled to begin in November 1993. The variants will be rated on their response to R. solani and the rate at which they recover from infection. Those displaying enhanced resistance will be maintained in a clonal repository for preservation, field evaluation, and seed production." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also related summary article "Recovery of Rhizoctonia solani resistant creeping bentgrass germplasm using the host-pathogen interaction system" 1993 Turfgrass Research Summary [USGA], 1993, p. 40-41, R=65328. R=65328 |
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| Note: | "1993 USGA Annual Progress Report"
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Last checked: 11/20/2013
Requires: PDF Reader |
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