| |
| Web URL(s): | http://www.graszaad.info/onderzoeksverslagen/Proceedings%20of%20the%207th%20IHSC.pdf#page=124
Last checked: 11/21/2014
Requires: PDF Reader
Notes: Item is within a single large file |
|---|
| Publication Type:
| Proceedings |
|---|
| Author(s): | Pfender, W. F. |
|---|
| Author Affiliation: | USDA-ARS NFSPRC, Corvallis, Oregon |
|---|
| Title: | Stem rust in perennial ryegrass seed crops: Epidemiological and genetic research at USDA-ARS |
|---|
| Meeting Info.: | Dallas, Texas: April 11-13, 2010 |
|---|
| Source: | Proceedings of the 7th International Herbage Seed Conference. 2010, p. 113-119. |
|---|
| Publishing Information: | s.l.: s.n. |
|---|
| # of Pages: | 7 |
|---|
| Keywords: | TIC Keywords: Disease control; Disease development; Disease evaluation; Epidemiology; Fungicide evaluation; Genetic factors; Lolium perenne; Puccinia graminis subsp. graminis; Seed crops; Seed production; Strobilurin; Triazole fungicides
|
|---|
| Abstract/Contents: | "In production of perennial ryegrass seed in the Northwest USA, stem rust is the primary disease constraint in terms of management cost and potential yield loss. The USDA-ARS research program on this problem is focused on improved decision making for fungicide use, and tools for genetic improvement. Data from 10 years of field and greenhouse research was used to construct an epidemiological model. This model is based on the effects of weather (temperature, leaf wetness) on plant growth and pathogen activity, and includes the effects of two major fungicide classes (triazoles and strobilurins) on disease development, particularly on the spread of disease within a plant. The model is implemented as a decision aid on a publicly-accessible internet site. Users enter scouting data and select a location for weather data to be loaded into the model. The website displays the model results, including the relationship of modeled disease development to an action threshold. The decision aid has performed well in large-scale field demonstration plots across 10 location-years, providing an average economic advantage of $39 per acre (range: $0 to $140) compared to standard fungicide programs. In genetic research, a perennial ryegrass mapping population was constructed from a cross between resistant and susceptible parents. The progeny (193 individuals) were tested by inoculating with two different pathotypes of the stem rust fungus, in separate experiments. Using a genetic map of these parents constructed with SSR and RAD markers, QTL analyses were conducted. The goal of this genetic research is to produce genetic markers for marker-assisted selection of stem rust resistance, as well as to provide information about genomic organization of disease resistance in perennial ryegrass." |
|---|
| Language: | English |
|---|
| References: | 14 |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Pfender, W. F. 2010. Stem rust in perennial ryegrass seed crops: Epidemiological and genetic research at USDA-ARS. p. 113-119. In Proceedings of the 7th International Herbage Seed Conference. Dallas, Texas: April 11-13, 2010. s.l.: s.n. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=251296 |
| If there are problems with this record, send us feedback about record 251296. |
| Choices for finding the above item: |
|---|
| Web URL(s):
http://www.graszaad.info/onderzoeksverslagen/Proceedings%20of%20the%207th%20IHSC.pdf#page=124
Last checked: 11/21/2014
Requires: PDF Reader
Notes: Item is within a single large file |
| Find from within TIC:
Digitally in TIC by file name: ihsc2010 |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
