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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/2001jou334.pdf
Last checked: 08/05/2010
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| Access Restriction: | Certain MSU-hosted archive URLs may be restricted to legacy database members. |
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| Publication Type:
| Refereed |
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| Author(s): | Qian, Y. L.;
Suplick, M. R. |
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| Author Affiliation: | Department of Horticulture and Landscape Architecture, Colorado State University, Fort Collins, Colorado |
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| Title: | Interactive effects of salinity and temperature on Kentucky bluegrass and tall fescue seed germination |
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| Section: | Physiology
Other records with the "Physiology" Section
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| Meeting Info.: | Toronto, Ontario, Canada: July 2001 |
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| Source: | International Turfgrass Society Research Journal. Vol. 9, No. Part 1, 2001, p. 334-339. |
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| Publishing Information: | Oakville, Ontario, Canada: International Turfgrass Society |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Salinity; Temperatures; Poa pratensis; Festuca arundinacea; Seed germination; Application rates; Models; Growing degree days
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| Cultivar Names: | NuStar; Rebel 3D |
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| Abstract/Contents: | "Salinity and adverse temperatures may dramatically reduce and delay turfgrass seed germination. To aid in selection of the best seeding temperatures under saline conditions, we conducted two experiments to determine the interactive effects of salinity and temperature on the seed germination percentage and speed of 'NuStar' Kentucky bluegrass (Poa pratensis L.) (KBG), and 'Rebel 3D' tall fescue (Festuca arundinaceae Schreb) (TF). Seeds were germinated on filter paper salinized with solutions ranging from 0 to 12 dS m-1, and subjected to diurnal warm/cool temperature regimes ranging from 15/5 to 35/25 °C over a 30-day period. In Experiment I, seeds were exposed to 8/16 h warm/cool temperatures in each 24-h period. In Experiment II, 16/8 warm/cool temperature regimes were applied. Surface regression models predicted that, in 8/16 h warm/cool diurnal temperature cycles, the optimum germination temperatures were 27.3/17.3 for KBG and 27.8/17.8 °C for TF. The temperature windows to achieve 75% germination were 20.0/10.0 - 34.5/24.5 °C and 17.4/7.4 -38.2/28.2°C for Nustar KBG and Rebel 3D TF, respectively. Salinity reduced the temperature ranges within which 75% germination could be obtained. At 6 dS m-1 salinity, the temperature windows to achieve 75% germination were 21.7/12.7 -31.7/21.7°C for Nustar KBG and 17.9/7.9 -37.8/27.8°C for Rebel 3D TF. The optimum temperature regimes for germination become cooler as the daily warm temperature period was prolonged, as 21.4/11.4°C for KBG and 26.8/16.8°C for TF under 16/8 warm/cool temperature cycles. Under 16/8 h warm/cool temperatures and in the absence of salinity, the temperature windows to achieve 75% germination were 14.1/4.1-28.6/18.6°C and 16.0/6.0 - 38.0/28.0°C for Nustar KBG and Rebel 3D TF, respecitvely. As salinity increased to 6 dS m-1 75% germination was not achievable for Nustar KBG. The temperature window to achieve 75% germination narrowed to 16.0/6.0 - 37.8/27.8°C for Rebel 3D TF. In conjunction with long-term local temperature data, the predictive models generated by this study may be used to determine optimum seeding dates for KBG and TF under saline conditions." |
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| Language: | English |
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| References: | 18 |
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| See Also: | Other items relating to: SALMT |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Qian, Y. L., and M. R. Suplick. 2001. Interactive effects of salinity and temperature on Kentucky bluegrass and tall fescue seed germination. Int. Turfgrass Soc. Res. J. 9(Part 1):p. 334-339. |
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https://archive.lib.msu.edu/tic/its/articles/2001jou334.pdf
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MSU catalog number: SB 433 .I52 v. 9 |
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