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| Web URL(s): | https://archive.lib.msu.edu/tic/its/articles/1997jou603.pdf
Last checked: 09/29/2008
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| Publication Type:
| Refereed |
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| Author(s): | Beard, J. B.;
Sifers, S. I. |
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| Author Affiliation: | International Sports Turf Institute, Inc., 1812 Shadowood Dr., College Station, Texas, USA 77840 |
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| Title: | Genetic diversity in dehydration avoidance and drought resistance within the Cynodon and Zoysia species |
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| Section: | Physiology and ecology: Contributed papers
Other records with the "Physiology and ecology: Contributed papers" Section
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| Meeting Info.: | Sydney, Australia: 1997 |
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| Source: | International Turfgrass Society Research Journal. Vol. 8, No. Part 1, 1997, p. 603-610. |
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| Publishing Information: | Blacksburg, VA: International Turfgrass Society |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Drought resistance; Genetic diversity; Cynodon dactylon; Cynodon transvaalensis; Zoysia matrella; Zoysia japonica; Root depth; Evapotranspiration rate; Wax coatings
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| Abstract/Contents: | "The objectives of this investigation were to assess the genetic diversity in dehydration avoidance and drought resistance among genotypes of Cynodon and Zoysia species. The approach was to provide an environment that would maximise the rate of water stress in the shortest period of time. This was achieved with a specially constructed field site consisting of 100% sand extending uniformly through the root-zone depth. Turfed plugs of 100 mm in diameter were collected from mature stands of at least four years age and transplanted in a randomised block arrangement with four replications. Once the turfs were fully rooted, the irrigation was terminated and assessments made over a five-month period, during which there was no significant natural rainfall, but with the high evapotranspiration rates typical of College Station, Texas. Substantial genetic diveristy in both dehydration avoidance and drought resistance was found among the twenty-six Cynodon genotypes, which encompassed fourteen C. dactylon and twelve C. dactylon x C. transvaalensis hybrids. Among the Cynodon genotypes, those with the shorter root systems tended to have poorer dehydration avoidance and drought resistance. In contrast, the genetic diversity in dehydration avoidance was much narrower among the nine Zoysia grasses, which included matrella and japonica genotypes. The much poorer dehydration avoidance when compared to the Cynodon species, was attributed primarily to a very limited root system, plus a higher evapotranspiration rate. The Zoysia species had a much slower rate of wax formation over the stomata during progressive drought stress in comparision to the Cynodon species." |
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| Language: | English |
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| References: | 18 |
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| See Also: | Other items relating to: Breeding for Drought
Other items relating to: Disasters - Drought |
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| Note: | Figures
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Beard, J. B., and S. I. Sifers. 1997. Genetic diversity in dehydration avoidance and drought resistance within the Cynodon and Zoysia species. Int. Turfgrass Soc. Res. J. 8(Part 1):p. 603-610. |
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https://archive.lib.msu.edu/tic/its/articles/1997jou603.pdf
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MSU catalog number: SB 433 .I52 v. 8 |
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