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| DOI: | 10.2135/cropsci2012.02.0106 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/52/5/2332
Last checked: 11/07/2016
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| Publication Type:
| Refereed |
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| Author(s): | Hu, Longxing;
Wang, Zhaolong;
Huang, Bingru |
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| Author Affiliation: | Hu and Wang: College of Agricultural and Biological Science, Shanghai Jiao Tong Univ., People's Republic of China; Hu: Key Lab. of Plant Germplasm Enhancement and Specialty Agriculture, Wuhan Botanical Garden, The Chinese Academy of Sciences, Wuhan, People's Republic of China; Huang: Dep. of Plant Biology and Pathology, Rutgers Univ., New Brunswick, NJ |
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| Title: | Growth and physiological recovery of Kentucky bluegrass from drought stress as affected by a synthetic cytokinin 6-benzylaminopurine |
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| Section: | Crop physiology & metabolism
Other records with the "Crop physiology & metabolism" Section
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| Source: | Crop Science. Vol. 52, No. 5, September 2012, p. 2332-2340. |
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| Publishing Information: | Madison, Wisconsin: Crop Science Society of America |
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| # of Pages: | 9 |
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| Related Web URL: | https://dl.sciencesocieties.org/publications/cs/abstracts/52/5/2332
Last checked: 11/07/2016
Notes: Abstract only
https://dl.sciencesocieties.org/publications/cs/articles/52/5/2332?show-t-f=figures&wrapper=no
Last checked: 11/07/2016
Notes: Figures only |
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| Keywords: | TIC Keywords: Abscisic acid; Cultivar evaluation; Cytokinins; Drought recovery; Drought resistance; Environmental stress; Foliar feeding; Poa pratensis; Zeatin
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| Cultivar Names: | Midnight; Brilliant |
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| Abstract/Contents: | "Cytokinins (CKs) influence plant adaptation to environmental stresses. The objectives of this study were to (i) examine effects of foliar application of a synthetic CK, 6-benzylaminopurine (6-BA), on postdrought recovery and (ii) determine physiological factors involved in postdrought recovery affected by CKs in a perennial grass species. Kentucky bluegrass (Poa pratensis L.) cultivars Midnight (drought tolerant) and Brilliant (drought sensitive) were subjected to drought by withholding irrigation for 15 d and were then rewatered for 10 d in growth chambers. Plants were treated with 25 μM 6-BA at the time of rewatering. Applying 6-BA significantly increased endogenous zeatin riboside and isopentenyl adenosine content and decreased abscisic acid (ABA) content in both cultivars previously exposed to drought stress. Foliar 6-BA application enhanced physiological recovery of plants from drought stress, as demonstrated by the increased leaf relative water content and visual turf quality and decreased electrolyte leakage. The 6-BA application also significantly improved photosynthetic recovery from drought, as manifested by the increase in net photosynthetic rate, transpiration rate, and stomatal conductance. Foliar application of 6-BA promoted the production of new tillers. Postdrought recovery affected by 6-BA application was more pronounced in Midnight than Brilliant, probably because the latter experiences a more sustained leaf water deficit. Our results suggested that CK-enhanced postdrought recovery of Kentucky bluegrass, particularly in the drought-tolerant cultivar, was associated with the alteration of CK:ABA balance and promotion of stomatal reopening, resumption of photosynthesis, and new tiller formation on rewatering." |
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| Language: | English |
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| References: | 50 |
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| See Also: | Other items relating to: Breeding for Drought |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hu, L., Z. Wang, and B. Huang. 2012. Growth and physiological recovery of Kentucky bluegrass from drought stress as affected by a synthetic cytokinin 6-benzylaminopurine. Crop Sci. 52(5):p. 2332-2340. |
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| DOI: 10.2135/cropsci2012.02.0106 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/articles/52/5/2332
Last checked: 11/07/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/cs/pdfs/52/5/2332
Last checked: 11/07/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2211522a |
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