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| Web URL(s): | http://turf.rutgers.edu/research/abstracts/symposium2005.pdf#page=39
Last checked: 11/26/2007
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | DaCosta, Michelle;
Bingru, Huang |
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| Author Affiliation: | Department of Plant Biology and Pathology, Rutgers University |
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| Title: | Morphological and physiological factors associated with bentgrass survival and recovery from drought |
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| Section: | Poster presentations
Other records with the "Poster presentations" Section
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| Meeting Info.: | Cook College, Rutgers, NJ: January 13-14, 2005 |
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| Source: | Proceedings of the Fourteenth Annual Rutgers Turfgrass Symposium. 2005, p. 38. |
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| Publishing Information: | New Brunswick, NJ: Center for Turfgrass Science, Cook College, Rutgers, The State University of New Jersey |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Morphology; Physiology; Drought resistance; Abscisic acid; Cytokinins; Drought recovery; Survival; Agrostis
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| Abstract/Contents: | "Many areas of turf may be left un-irrigated or under-irrigated due to widespread water use restrictions. Rapid recovery of turfgrasses from drought stress following irrigation restrictions is an essential strategy of turfgrass survival of stressful environments. Various morphological and physiological characteristics are associated with survival and recovery from drought, including rapid recovery of existing tissues, regeneration of new tissues, and alteration in plant hormone status. Abscisic acid (ABA) and cytokinins (CK) are two groups of plant hormones that are reported to improve plant resistance to drought stress. Changes in hormonal balance in particular have been reported as important for relief from drought stress and facilitating plant recovery. The primary objective for this study was to examine strategies for survival and recovery from drought in three bentgrass (Agrostis) species. Sods of creeping (cv. L-93), colonial (cv. Tiger 2), and velvet (cv. Greenwich) bentgrasses were transplanted into polyvinyl chloride (PVC) tubes (40 cm long, 10 cm diameter) filled with a 3:1 (v/v) sterilized mixture of soil and sand. The experiment consisted of three treatments: (i) well-watered control; (ii) drought-irrigation completely withheld; and (iii) drought recovery. For recovery, a group of drought-stressed plants were re-watered at the end of the drought period to evaluate recovery potential for each species. Bentgrass species varied in strategies for recovery from drought stress. Colonial bentgrass exhibited faster recovery through regeneration of new leaf tissue, while velvet bentgrass exhibited more rapid recovery of existing compared to new growth. Creeping bentgrass utilized both strategies for rapid initial recovery of existing tissue, followed also by regeneration of new leaf tissue. The morphological characteristics associated with recovery of bentgrasses from drought included new tiller generation from basal tissue (potentially from crowns, stolons, and rhizomes) and re-hydration of existing leaf tissue. Hormone status was also an important physiological factor for plant recovery, and plants exhibiting a rapid increase in CK and decrease in ABA recovered more rapidly than plants with delayed changes in hormone balance." |
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| Language: | English |
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| References: | 0 |
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| See Also: | Other items relating to: Disasters - Drought |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
DaCosta, M., H. Bingru, and M. DaCosta. 2005. Morphological and physiological factors associated with bentgrass survival and recovery from drought. Proc. Annu. Rutgers Turfgrass Symp. p. 38. |
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| Web URL(s):
http://turf.rutgers.edu/research/abstracts/symposium2005.pdf#page=39
Last checked: 11/26/2007
Requires: PDF Reader |
| 
MSU catalog number: SB 433 .R88 |
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