Full TGIF Record # 163289
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DOI:10.1111/j.1744-697X.2006.00062.x
Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1744-697X.2006.00062.x/full
    Last checked: 01/31/2014
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http://onlinelibrary.wiley.com/doi/10.1111/j.1744-697X.2006.00062.x/pdf
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Publication Type:
i
Report
Author(s):Sugiyama, Shu-ichi
Author Affiliation:Faculty of Agriculture and Life Science, Hirosaki University, Hirosaki, Japan
Title:Responses of shoot growth and survival to water stress gradient in diploid and tetraploid populations of Lolium multiflorum and L. perenne
Section:Original article
Other records with the "Original article" Section
Source:Grassland Science. Vol. 52, No. 4, December 2006, p. 155-160.
# of Pages:6
Publishing Information:Oxford, England: Blackwell Pub.
Related Web URL:http://onlinelibrary.wiley.com/doi/10.1111/j.1744-697X.2006.00062.x/abstract
    Last checked: 01/31/2014
    Notes: Abstract only
Keywords:TIC Keywords: Diploids; Drought stress; Evaluations; Growth rate; Lolium multiflorum; Lolium perenne; Shoot growth; Tetraploidy; Water stress
Abstract/Contents:"Drought stress is one of the critical environmental factors in determining growth and survival of herbage grasses. In this study, by using a hydroponic culture system including different amounts of polyethylene glycol (PEG), responses of plant shoots to water stress in four different intensities (0 Mpa, -0.6 Mpa, -1.2 Mpa and -1.8 Mpa) were examined in diploid and tetraploid cultivars of Italian ryegrass (Lolium multiflorum) and perennial ryegrass (L. perenne). Since freezing injury is caused by cell dehydration, freezing tolerance was also examined for six subzero temperatures (-11, -12, -14, -16, -18 and -20°C) in both species. L. multiflorum had a larger shoot biomass at all stress intensities and a lower survival rate under severe water stress and freezing stress conditions than L. perenne. Thus, there was a trade-off (negative correlation) between potential growth under a stress-free condition and survival under a severe stress condition in diploid and tetraploid cultivars of both species. This trade-off was mediated by tissue water content. High water content led to a high growth rate through increasing specific leaf area, while low water content resulted in a high tissue osmotic potential that could confer high cell dehydration tolerance."
Language:English
References:17
Note:Figures
Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Sugiyama, S. 2006. Responses of shoot growth and survival to water stress gradient in diploid and tetraploid populations of Lolium multiflorum and L. perenne. Grassland Science. 52(4):p. 155-160.
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DOI: 10.1111/j.1744-697X.2006.00062.x
Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1744-697X.2006.00062.x/full
    Last checked: 01/31/2014
    Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/j.1744-697X.2006.00062.x/pdf
    Last checked: 01/31/2014
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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