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| Web URL(s): | https://dl.sciencesocieties.org/publications/cs/articles/40/3/765
Last checked: 05/04/2017
https://dl.sciencesocieties.org/publications/cs/pdfs/40/3/765
Last checked: 05/04/2017
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| Publication Type:
| Refereed |
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| Author(s): | Sullivan, W. Michael;
Jiang, Zhongchun;
Hull, Richard J. |
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| Author Affiliation: | Department of Plant Sciences, Universtity of Rhode Island, Kingston, RI |
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| Title: | Root morphology and its relationship with nitrate uptake in Kentucky bluegrass |
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| Section: | Turfgrass science
Other records with the "Turfgrass science" Section
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| Source: | Crop Science. Vol. 40, No. 3, May/June 2000, p. 765-772. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Root growth; Root distribution; Morphology; Nitrates; Uptake; Poa pratensis; Absorption; Roots; Adventitious roots; Rhizomes; Root length; Comparisons; Cultivar variation; Root weight
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| Cultivar Names: | Blacksburg; Barzan; Conni; Dawn; Eclipse; Gnome |
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| Abstract/Contents: | "Intraspecific variation in nitrate absorption by turfgrasses has been studied but differences in turfgrass root morphology which may contribute to this vaiation have not been ascertained. Such information may benefit breeding programs aimed at improving the ability of turfgrass to absorb nitrate from low fertility soils. The present study quantifies belowground morphological traits of Kentucky bluegrass (Poa pratensis L.) and establishes their relationships with nitrate uptake rate (NUR). Tiller-generated plants were grown in silica sand, mowed weekly, and watered daily with nutrient solution containing 1mM nitrate for 5 mo. Following transfer to solution culture, nitrate depletion of the nutrient solution was monitored for eight consecutive days, after which the belowground portion of each plant was separated into adventitious roots, fibrous roots, and rhizomes. Estimates of total length, total area, average diameter, and length distribution among root thickness classes, were made by scanning and image analysis systems. NUR expressed as micromoles nitrate absorbed per plant per hour was significantly (Pā¤0.05) and positively correlated with the total biomass, length and area of the belowground organs. Fibrous roots contributed to >80% of the total belowground length. Approximately 80% of the total fibrous root length had diameters <0.2 mm. The fibrous root length, surface, and volume of every diameter class were significantly and positively correlated with NUR. Larger numbers of thick roots (diameter ā„0.5mm) appeared to have no effects on NUR, while increased rhizome number appeared to have a negative effect on NUR." |
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| Language: | English |
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| References: | 30 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sullivan, W. M., Z. Jiang, and R. J. Hull. 2000. Root morphology and its relationship with nitrate uptake in Kentucky bluegrass. Crop Sci. 40(3):p. 765-772. |
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| Web URL(s):
https://dl.sciencesocieties.org/publications/cs/articles/40/3/765
Last checked: 05/04/2017
https://dl.sciencesocieties.org/publications/cs/pdfs/40/3/765
Last checked: 05/04/2017
Requires: PDF Reader |
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MSU catalog number: SB 183 .C7 |
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