| |
| Web URL(s): | https://www.crops.org/publications/cs/pdfs/38/5/CS0380051214
Last checked: 08/05/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
|---|
| Publication Type:
| Refereed |
|---|
| Author(s): | Marcum, Kenneth B. |
|---|
| Author Affiliation: | Dep. of Plant Sciences, P.O. Box 210036, Univ. of Arizona, Tucson, AZ 85721-0036. |
|---|
| Title: | Cell membrane thermostability and whole-plant heat tolerance of Kentucky bluegrass |
|---|
| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
|
|---|
| Source: | Crop Science. Vol. 38, No. 5, September/October 1998, p. 1214-1218. |
|---|
| Publishing Information: | Madison, WI: Crop Science Society of America |
|---|
| # of Pages: | 5 |
|---|
| Keywords: | TIC Keywords: Heat stress; Poa pratensis; Heat resistance; In vitro
|
|---|
| Abstract/Contents: | "Heat stress is often a major problem in C₃ (cool-season) turfgrasses during summer months, resulting in reduced turf quality and stand loss. Current germplasm screening for heat tolerance relies on field and whole-plant techniques, which are often inefficient and insensitive due to environmental interactions. A rapid, accurate procedure allowing simultaneous screening of large numbers of genotypes is needed. In vitro cell membrane thermostability (CMT) has been determined for a number of plants. The objectives of this study were to determine if differences in CMT exist among cultivars of Kentucky bluegrass (Poa pratensis L.), and if CMT can predict whole-plant heat tolerance of these cultivars. CMT was determined by subjecting leaf segments to progressive heat shock exposure times, and deriving cellular electrolyte leakage curves. Whole-plant heat tolerance was determined by subjecting plants to 41°C day/34°C night at 95% relative humidity for 62 d (Study 1) and 47 d (Study 2) in controlled- environment chambers. Relative percentage leaf firing and percentage shoot dry weight were determined weekly. CMT was negatively correlated with relative percentage leaf firing (r= -0.80) and positively with relative percentage shoot dry weight (r= 0.75), averaged over two experiments. CMT and whole-plant heat tolerance used as indicators demonstrated that cultivars BM-3 and Midnight were more heat tolerant than Lavang, Nugget, and Ryss. This is the first report showing that CMT can predict whole-plant heat tolerance among turfgrass cultivars. Being rapid, accurate, and requiring little space, CMT may offer turfgrass breeders an ideal method for screening large numbers of genotypes for heat tolerance." |
|---|
| Language: | English |
|---|
| References: | 33 |
|---|
| Note: | Figures
Tables |
|---|
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Marcum, K. B. 1998. Cell membrane thermostability and whole-plant heat tolerance of Kentucky bluegrass. Crop Sci. 38(5):p. 1214-1218. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=54264 |
| If there are problems with this record, send us feedback about record 54264. |
| Choices for finding the above item: |
|---|
| Web URL(s):
https://www.crops.org/publications/cs/pdfs/38/5/CS0380051214
Last checked: 08/05/2010
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
| 
MSU catalog number: SB 183 .C7 |
| Find from within TIC:
Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |
