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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/41/1/127
Last checked: 05/04/2017
https://dl.sciencesocieties.org/publications/cs/pdfs/41/1/127
Last checked: 05/04/2017
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| Publication Type:
| Refereed |
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| Author(s): | Xu, Qingzhang;
Huang, Bingru |
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| Author Affiliation: | Department of Horticulture, Forestry, and Recreation Resources, Kansas State University, Manhattan, KS |
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| Title: | Morphological and physiological characteristics associated with heat tolerance in creeping bentgrass |
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| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
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| Source: | Crop Science. Vol. 41, No. 1, January/February 2001, p. 127-133. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Heat resistance; Agrostis stolonifera; Morphology; Growth; Breeding; Cultivar improvement; Photosynthesis; Tillers (vegetative); Root growth; Heat stress; Cultivar evaluation; Carboxylase; Enzyme activity; Physiology; Temperatures; Plant density; Shoot density; Root weight; Root-shoot ratio; Comparisons; Golf courses; Golf greens; Turfgrass quality; Shoot growth; Root length
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| Cultivar Names: | L-93; Penncross |
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| Abstract/Contents: | "Growth of creeping bentgrass (Agrostis palustrisHuds.) is limited by heat stress during summer. Understanding the morphological and physiological characteristics associated with heat tolerance of creeping bentgrass would facilitate breeding programs in improving those characteristics. The objectives of this experiment were to study responses of single-leaf photosynthetic capacity, tillering, and root growth to heat stress and to determine the relative importance of these factors in heat tolerance. The cultivars L-93 (heat tolerant) and Penncross (heat sensitive) were exposed to day/night temperatures of 20/15°C (control) and 35/30°C (heat stress) in growth chambers. Canopy net photosynthetic rate (Pn), single-leaf Pn, and RuBP carboxylase (Rubisco) activity were reduced by heat stress for both double at 64 d of treatment) than that of Penncross under heat stress. Cultivars were not different in single-leaf Pn and Rubisco activity under either control or heat stress conditions. High temperature reduced plant density, tiller density, root number, and root fresh weight for both cultivars. L-93 had higher plant and tiller densities, greater root to tiller ratio, and more and finer roots than Penncross under control and high temperature conditions. The better performance of L-93 under heat stress was due largely to its morphological characteristics, including tillering and root growth, but was not related to single-leaf photosynthetic capacity. Narrow leaves, small plants, dense tillers, big root system, and high root-to-shoot ratio could be used to select heat tolerant cultivars." |
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| Language: | English |
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| References: | 45 |
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| Note: | Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Xu, Q., and B. Huang. 2001. Morphological and physiological characteristics associated with heat tolerance in creeping bentgrass. Crop Sci. 41(1):p. 127-133. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/articles/41/1/127
Last checked: 05/04/2017
https://dl.sciencesocieties.org/publications/cs/pdfs/41/1/127
Last checked: 05/04/2017
Requires: PDF Reader |
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MSU catalog number: SB 183 .C7 |
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