| |
| DOI: | 10.1094/PHYTO-102-1-S1.1 |
|---|
| Web URL(s): | http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-102-1-S1.1#page=5
Last checked: 04/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
|---|
| Publication Type:
| Report |
|---|
| Content Type: | Abstract or Summary only |
|---|
| Author(s): | Li, Y.;
Uddin, W. |
|---|
| Author Affiliation: | The Pennsylvania State University, University Park, PA |
|---|
| Title: | Effects of relative humidity on infection, condida production, and mycelial colonization of perennial ryegrass tissue by Magnaporthe oryzae |
|---|
| Section: | 2011 Northeastern Division meeting abstracts
Other records with the "2011 Northeastern Division meeting abstracts" Section
|
|---|
| Meeting Info.: | New Brunswick, New Jersey: October 12-14, 2011 |
|---|
| Source: | Phytopathology. Vol. 102, No. 1, Supplement 1 2012, p. S1.5. |
|---|
| Publishing Information: | St. Paul, Minnesota: American Phytopathological Society |
|---|
| # of Pages: | 1 |
|---|
| Keywords: | TIC Keywords: Disease evaluation; Environmental effects; Golf fairways; Humidity; Leaf wetness duration; Lolium perenne; Pyricularia grisea; Temperatures
|
|---|
| Abstract/Contents: | "Gray leaf spot (Magnaporthe oryzae) is serious disease of perennial ryegrass turf causing extensive damage in golf course fairways in various regions of the United States. Environmental conditions such as moderately warm temperature and prolonged leaf wetness duration have been reported to favor gray leaf spot development; however, effects of relative humidity (R.H.) on the disease is virtually unknown. Therefore, this study was undertaken to determine the effects of relative humidity (85-100% at 3% intervals) on infection, conidia production, and colonization of the perennial ryegrass plant tissue by M. oryzae. Results of our study showed that relative humidity at 88% and below were not adequate for M. oryzae for infection of perennial ryegrass. However, 88% R.H. was found to be the threshold of conidiation from necrotic lesions on perennial ryegrass leaf blades. Starting from 94% R.H., conidiation was found to increase exponentially with increase of R.H., which may be best described by a model: Y = 1.3 x 10-19e0.48X (Y = conidiation; X = relative humidity). Furthermore, visual assessment of mycelial mass in the leaf tissue indicated that there was a positive relationship (qualitative) between mycelial mass in the leaf tissue and rate of conidia production. Results of our study suggest that relative humidity is an important environmental factor governing the development of gray leaf spot in perennial ryegrass turf." |
|---|
| Language: | English |
|---|
| References: | 0 |
|---|
| Note: | This item is an abstract only! |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Li, Y., and W. Uddin. 2012. Effects of relative humidity on infection, condida production, and mycelial colonization of perennial ryegrass tissue by Magnaporthe oryzae. Phytopathology. 102(1):p. S1.5. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=219321 |
| If there are problems with this record, send us feedback about record 219321. |
| Choices for finding the above item: |
|---|
| DOI: 10.1094/PHYTO-102-1-S1.1 |
| Web URL(s):
http://apsjournals.apsnet.org/doi/pdf/10.1094/PHYTO-102-1-S1.1#page=5
Last checked: 04/25/2013
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: b2219736a |
| Find from within TIC:
Digitally in TIC by file name: phytp2012jannortheasterndiv |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
