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| DOI: | 10.21273/JASHS.134.5.505 |
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| Web URL(s): | https://journals.ashs.org/jashs/view/journals/jashs/134/5/article-p505.xml
Last checked: 12/06/2019
Requires: PDF Reader |
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| Publication Type:
| Refereed |
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| Author(s): | Bian, Xiuju;
Merewitz, Emily;
Huang, Bingru |
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| Author Affiliation: | Bian: Department of Crop Science, Agricultural University of Hebei, Baoding, China; Merewitz and Huang: Department of Plant Biology and Pathology, Rutgers University, New Brunswick, NJ |
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| Title: | Effects of trinexapac-ethyl on drought responses in creeping bentgrass associated with water and osmotic adjustment |
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| Section: | Environmental stress physiology
Other records with the "Environmental stress physiology" Section
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| Source: | Journal of The American Society for Horticultural Science. Vol. 134, No. 5, September 2009, p. 505-510. |
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| Publishing Information: | Alexandria, Va.: American Society for Horticultural Science |
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| # of Pages: | 6 |
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| Keywords: | TIC Keywords: Agrostis stolonifera; Drought resistance; Evapotranspiration rate; Growth analysis; Growth regulator evaluation; Osmotic adjustment; Photochemical efficiency; Plant growth regulators; Proline; Relative water content; Soil water content; Stress factors; Trinexapac-ethyl; Turfgrass quality; Water relations; Water use efficiency
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| Cultivar Names: | L-93 |
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| Abstract/Contents: | "Understanding factors influencing drought resistance traits is important for improving turfgrass growth in water-limited environments. The objectives of this study were to examine effects of a plant growth regulator, trinexapac-ethyl (TE), on turf growth and water use for creeping bentgrass (Agrostis stolonifera L.) exposed to drought stress, and to determine changes in the accumulation of solutes involved in osmotic adjustment associated with TE application. Plant foliage of cultivar L-93 was sprayed with 1.95 mL · L-1 of TE at 0.113% a.i. 14 days before and at the initiation of drought stress. TE-treated and untreated plants were exposed to well-watered or drought stress conditions for 28 days in a growth chamber. TE-treated plants exhibited a reduced rate of water depletion from the soil as demonstrated by higher soil water content, lower evapotranspiration rates, and higher leaf relative water content during 28 days of drought stress compared with non-TE-treated plants. During the later phase of drought stress, TE-treated plants had a greater reduction in leaf Ψ S at full turgor or greater osmotic adjustment, which was associated with increased accumulation of soluble sugars and inorganic ions (Ca and K) in leaves of TE-treated plants. Proline content increased in response to drought stress, but was unaffected by TE application, suggesting that it may not contribute to the effects of TE on osmotic adjustment. TE-treated plants maintained significantly higher turf quality and leaf photochemical efficiency under drought stress. The results suggest that the promotive effects of TE application on turf growth during drought stress were associated with the reduction in water depletion or lower water use and increases in osmotic adjustment due to the accumulation of inorganic solutes and soluble sugars." |
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| Language: | English |
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| References: | 25 |
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| See Also: | Other items relating to: Disasters - Drought |
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| Note: | Pictures, b/w
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Bian, X., E. Merewitz, and B. Huang. 2009. Effects of trinexapac-ethyl on drought responses in creeping bentgrass associated with water and osmotic adjustment. J. Am. Soc. Hortic. Sci. 134(5):p. 505-510. |
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| DOI: 10.21273/JASHS.134.5.505 |
| Web URL(s):
https://journals.ashs.org/jashs/view/journals/jashs/134/5/article-p505.xml
Last checked: 12/06/2019
Requires: PDF Reader |
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MSU catalog number: b2221587a |
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