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| Web URL(s): | https://scisoc.confex.com/scisoc/2021am/meetingapp.cgi/Paper/136562
Last checked: 03/30/2022
Requires: JavaScript |
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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | McBride, Sean;
Huang, Bingru;
Errickson, William |
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| Author Affiliation: | McBride: Rutgers University, N Wildwood, NJ; Huang: Plant Biology, Rutgers University, New Brunswick, NJ; Errickson: Plant Biology, Rutgers University, Freehold, NJ |
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| Title: | Effects of hormones and plant growth promoting bacteria on annual bluegrass (Poa annua) tolerance to heat stress |
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| Section: | C05 turfgrass science
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| Meeting Info.: | Salt Lake City, Utah: November 7-10, 2021 |
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| Source: | ASA, CSSA and SSSA International Annual Meetings. 2021, p. 1224. |
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| Publishing Information: | [Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America] |
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| # of Pages: | 1 |
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| Abstract/Contents: | "Annual Bluegrass (Poa annua) is attributed to having relatively shallow roots and being more susceptible to heat stress compared to other turf grass species. Enhancing root growth may be key to improving heat stress tolerance in Poa and maintaining quality putting greens. The objective of this study is to determine the effects of selected growth-promoting hormones and ethylene-inhibiting bacteria on rooting characteristics in Poa grown under heat stress conditions. Poa sods were grown at control (22/17 °C day/night) and heat stress (35/30 °C day/night) conditions in growth chambers. Plants were treated weekly for 21 days with exogenous applications of the hormone strigolactone (SL); ethylene inhibitor aminoethoxyvinylglycine (AVG); ethylene suppressing plant growth promoting bacteria (PGPR) with 1-Aminocyclopropane-1-carboxylic acid deaminase (ACCd) activity; and water as untreated control. Plant heat responses were evaluated as visual turf quality (TQ), canopy temperature change, and leaf water content (LWC). Total root length was analyzed using WinRHIZO software, and total root biomass was measured at the end of the experiment. Application of SL, AVG, and PGPR resulted in significantly higher TQ on day 14 and 21 of heat stress, higher LWC on day 21, and lower canopy temperature change on day 21 compared to the control. Of the treatments, the ethylene inhibitors (AVG and ACCd PGPR) had a more significant effect on TQ and LWC than SL. Root Length and biomass was significantly greater for SL, AVG, and PGPR treatments under heat stress compared to the control. These results indicate that the application of growth-promoting hormones and ethylene inhibitors on Poa can enhance root growth and improve Poa heat tolerance." |
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| Language: | English |
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| References: | 0 |
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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):
McBride, S., B. Huang, and W. Errickson. 2021. Effects of hormones and plant growth promoting bacteria on annual bluegrass (Poa annua) tolerance to heat stress. Agron. Abr. p. 1224. |
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Last checked: 03/30/2022
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