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| DOI: | doi:10.2135/cropsci2013.05.0329 |
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| Publication Type:
| Refereed |
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| Author(s): | Hoffman, Lindsey;
DaCosta, Michelle;
Ebdon, J. Scott |
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| Title: | Examination of cold deacclimation sensitivity of annual bluegrass and creeping bentgrass |
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| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
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| Source: | Crop Science. Vol. 54, No. 1, January/February 2014, p. 413-420. |
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| Publishing Information: | Madison, Wisconsin: Crop Science Society of America |
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| # of Pages: | 8 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/54/1/413
Last checked: 11/07/2016
Notes: Abstract only
https://dl.sciencesocieties.org/publications/cs/articles/54/1/413?show-t-f=tables&wrapper=no
Last checked: 11/07/2016
Notes: Tables only
https://dl.sciencesocieties.org/publications/cs/articles/54/1/413?show-t-f=figures&wrapper=no
Last checked: 11/07/2016
Notes: Figures only |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Cultivar evaluation; Deacclimation; Poa annua; Temperature stress; Winter injury
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| Abstract/Contents: | "Annual bluegrass (Poa annua L.) (AB) frequently exhibits increased susceptibility to winter injury compared to other cool-season turfgrass species such as creeping bentgrass (Agrostis stolonifera L.) (CB). Interspecific differences in winter survival of these two species may be associated with enhanced sensitivity of AB to decreases in freezing tolerance (deacclimation) during winter and early spring months; however, there is limited understanding of the factors associated with cold deacclimation between these two species. Therefore, the objective of this research was to determine the deacclimation sensitivity of one AB ecotype and one CB cultivar in response to varying temperature increases and durations. Total shoot growth and freezing tolerance (lethal temperature resulting in 50% mortality [LT50]) of AB and CB was monitored throughout cold acclimation (20, 2, and -2°C) and following exposure to a combination of 4, 8, or 12°C for 1 or 5 d. Overall, freezing tolerance of AB (LT50 of -17.7°C) was significantly lower than CB (LT50 of -21.2°C) following cold acclimation, and in general CB maintained higher levels of freezing tolerance throughout deacclimation compared to AB (LT50 of -16.2 and -12°C, respectively). Both AB and CB exhibited deacclimation in response to above-freezing temperatures; however, the threshold temperature required to induce greater losses in freezing tolerance was lower for AB compared to CB. Specifically, a 2.5-fold greater loss in freezing tolerance was detected in AB compared to CB following exposure to 4°C. Furthermore, total shoot growth and LT50 were correlated during deacclimation in these species." |
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| Language: | English |
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| References: | 40 |
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| See Also: | Interpretive summary appears in Golf Course Management, 82(5) May 2014, p. 88, with title "Hey Poa, it's cold outside", R=241320. R=241320 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hoffman, L., M. DaCosta, and J. S. Ebdon. 2014. Examination of cold deacclimation sensitivity of annual bluegrass and creeping bentgrass. Crop Sci. 54(1):p. 413-420. |
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| DOI: doi:10.2135/cropsci2013.05.0329 |
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MSU catalog number: b2211522a |
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