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| Web URL(s): | https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/121922 Last checked: 11/27/2019 Requires: JavaScript |
| Publication Type: | Report |
| Content Type: | Abstract or Summary only |
| Author(s): | Katuwal, Krishna; Tishchenko, Viktor; Jespersen, David |
| Author Affiliation: | University of Georgia-Griffin, Griffin, GA |
| Title: | Drought tolerance in seashore paspalum ecotypes collected from different climatic zones |
| Section: | C05 turfgrass science Other records with the "C05 turfgrass science" Section Turf ecology and management oral I: Physiology, irrigation, and abiotic stress (includes student competition) Other records with the "Turf ecology and management oral I: Physiology, irrigation, and abiotic stress (includes student competition)" Section |
| Meeting Info.: | San Antonio, Texas: November 10-13, 2019 |
| Source: | ASA, CSSA and SSSA International Annual Meetings. 2019, p. 121922. |
| Publishing Information: | [Madison, Wisconsin]: [American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America] |
| # of Pages: | 1 |
| Keywords: | TIC Keywords: Climatic zones; Cultivar evaluation; Drought resistance; Drought stress; Ecotypes; Paspalum vaginatum; Physiological responses |
| Cultivar Names: | Seaisle1; SeaStar; EinKhundra; 12; Q40522 |
| Abstract/Contents: | "Turfgrasses are a vital part of human lives since they provide several services including recreational, aesthetic and environmental services. However, drought is a major constraint to turfgrass production that causes severe damage each year. There is a need to identify drought tolerant turfgrass cultivars and understand their underlying drought tolerance mechanisms. The objective of our study was to identify drought-tolerant seashore paspalum genotypes by characterizing their physiological responses to drought stress. Fifteen genotypes of seashore paspalum (Paspalum vaginatum) were grown under two different water treatments: well-watered and water-stressed by withholding water for 15 days within a controlled growth chamber environment. A wide range in responses to drought were seen in the tested genotypes. Seashore paspalum genotypes such as 'Seaisle1', 'EinKhudra' and '12' had the best drought performance whereas 'Seastar' and 'Q40522' performed relatively poorly in terms of turf quality, percentage green cover and dark green color index. Other genotypes had intermediate responses. Well performing genotype Seaisle1 had the greatest leaf water content of 54% at the end of stress treatment. Seaisle1 also managed to have greater photosynthesis, transpiration and stomatal conductance compared to poorer performing genotypes. Leaf water use efficiency of Seaisle1 was 9-fold greater than average leaf water use efficiency of Seastar and Q40522. Seaisle1 also had greater cell membrane stability as indicated by lower electrolyte leakage compared to many other genotypes. In general, better performing genotypes had greater osmotic adjustment compared to poorer performing genotypes after a week of drought stress. Our findings indicated a wide variation exists in drought tolerance in seashore paspalum and identified genotypes could be a source of drought tolerance traits for improving turfgrass drought stress tolerance." |
| Language: | English |
| References: | 0 |
| See Also: | See also article "Drought tolerance in seashore paspalum ecotypes" Golf Course Management, 88(7) July 2020, p. 65, R=313582.R=313582 |
| Note: | This item is an abstract only! "131-9" |
| ASA/CSSA/SSSA Citation (Crop Science-like – may be incomplete): | Katuwal, K., V. Tishchenko, and D. Jespersen. 2019. Drought tolerance in seashore paspalum ecotypes collected from different climatic zones. Agron. Abr. p. 121922. |
| Fastlink to access this record outside TGIF: | http://tic.msu.edu/tgif/flink/RECNO/309472 |
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| Web URL(s) : | https://scisoc.confex.com/scisoc/2019am/meetingapp.cgi/Paper/121922 Last checked: 11/27/2019 Requires: JavaScript |
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