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| Web URL(s): | https://wssa.net/wp-content/uploads/2022-WSSA-CWSS-Proceedings-Final-April-4.pdf#page=82
Last checked: 06/20/2023
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Content Type: | Abstract or summary only |
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| Author(s): | Osburn, Andrew W.;
Bowling, Rebecca;
Bagavathiannan, Muthukumar V. |
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| Author Affiliation: | Osburn and Bagavathiannan: Texas A&M University, College Station, TX; Bowling: Texas A&M University, Dallas, TX |
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| Title: | Annual bluegrass (Poa Annua L.) seedbank persistense: A multi-state study across plant hardiness gradients in the United States |
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| Meeting Info.: | Virtual: February 22-24, 2022 |
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| Source: | Abstracts of the Annual Meeting of the Weed Science Society of America. 2022, p. 82. |
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| Publishing Information: | [United States]: Weed Science Society of America |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Annual bluegrass (Poa annua L.) is a highly prolific and troublesome weed found in turfgrass systems across the United States (US) and beyond. This problematic plant severely impacts the aesthetic value of turfgrass fields and drastically increases control costs. Annual bluegrass has exhibited high persistence in turfgrass systems, but the role of seedbank longevity in long-term persistence of this species is unknown. In the fall of 2020, ten unique populations originating from various plant hardiness zones across the US were buried in seven locations at two depths, surface and 5 cm. For each treatment, a total of 250 viable seeds were mixed in weed-free native soil of the burial site and placed in a polyethylene mesh bag, which was buried at the respective depth in three replicates. A subset of the seed for each population has been stored under room temperature for comparison. The bags are retrieved at 6-month intervals over a period of 3 years. Upon retrieval, the bags are cut open and placed on the surface of plastic trays for germination evaluation in the greenhouse. Germination is observed at weekly intervals over the course of 6 weeks. The trays are then subjected to cold treatment (4 C) for 3 weeks to facilitate dormancy breaking and then moved to the greenhouse for further germination observations. As of now, data from the first 6-month after burial (bags retrieved in Mar/April 2021) is available. Seedbank persistence was greater in seed sources obtained from northern plant hardiness zones (5a, 6a, and 6b) exhibiting upwards of 17% remaining viability compared to those from the more southern regions (7a, 7b, 8a, 9a, and 9b) which exhibited less than 1% remaining viability at 6 months after burial. Additionally, seed buried at the 5 cm remained more viable than seed buried at the surface. The preliminary findings suggest that populations from southern locations experience either greater seed demise or exhibit greater dormancy. This is an ongoing study and results will be updated as further seed bag retrievals are evaluated." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Original version appears in Proceedings of the Southern Weed Science Society 75th Annual Meeting. Vol 75, 2022, p. 28 R=324008. R=324008
Updated version appears in Abstracts of the Annual Meeting of the Weed Science Society of America, 2023, p. 378, R=331124. R=331124 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Osburn, A. W., R. Bowling, and M. V. Bagavathiannan. 2022. Annual bluegrass (Poa Annua L.) seedbank persistense: A multi-state study across plant hardiness gradients in the United States. Abstr. Annu. Meet. Weed Sci. Soc. Am. p. 82. |
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| Web URL(s):
https://wssa.net/wp-content/uploads/2022-WSSA-CWSS-Proceedings-Final-April-4.pdf#page=82
Last checked: 06/20/2023
Requires: PDF Reader
Notes: Item is within a single large file |
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MSU catalog number: b2180085 |
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