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DOI:10.1111/j.1365-2494.2007.00583.x
Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2007.00583.x/full
    Last checked: 01/31/2014
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http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2007.00583.x/pdf
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Publication Type:
i
Refereed
Author(s):Crush, J. R.; Easton, H. S.; Waller, J. E.; Hume, D. E.; Faville, M. J.
Author Affiliation:Crush and Waller: AgResearch, Ruakura Research Centre, Hamilton, New Zealand; Easton, Hume, and Faville: AgResearch , Grasslands Research Centre, Palmerston North, New Zealand
Title:Genotypic variation in patterns of root distribution, nitrate interception and response to moisture stress of a perennial ryegrass (Lolium perenne L.) mapping population
Section:Original articles
Other records with the "Original articles" Section
Source:Grass and Forage Science. Vol. 62, No. 3, September 2007, p. 265-273.
# of Pages:9
Publishing Information:Oxford, Blackwell Scientific Publications
Related Web URL:http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2007.00583.x/abstract
    Last checked: 01/31/2014
    Notes: Abstract only
Keywords:TIC Keywords: Dry weight; Gene mapping; Genetic variability; Genotypes; Lolium perenne; Nitrates; Root depth; Root distribution; Root growth; Water stress
Abstract/Contents:"Genotypic variation in patterns of root distribution, nitrate interception and response to moisture stress were assessed in both parents and 198 progeny of a perennial ryegrass (Lolium perenne L.) full-sibling mapping population. This was carried out in metre-deep tubes of sand culture in a glasshouse experiment. The proportion of root dry matter (DM) weight in the top 10 cm of sand ranged from 0•33 to 0•75 and values of log10(1 - K), where K is the constant for an exponential model relating root DM weight and root depth, also showed wide variation among genotypes. The proportion of a pulse of 15N recovered in whole plants ranged from 0•124 to 0•431. There was a positive linear correlation between the proportion of 15N recovered and plant total DM weight, but no relationship between nitrate interception and patterns of distribution of DM weight of roots. Some genotypes responded to moisture stress by increasing root growth, and in others root growth was inhibited. It is concluded that this below-ground variability in root variables may be an evolutionary adaptation by plant populations to survive heterogeneity in soil biotic and edaphic factors."
Language:English
References:32
Note:Tables
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Crush, J. R., H. S. Easton, J. E. Waller, D. E. Hume, and M. J. Faville. 2007. Genotypic variation in patterns of root distribution, nitrate interception and response to moisture stress of a perennial ryegrass (Lolium perenne L.) mapping population. Grass Forage Sci. 62(3):p. 265-273.
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DOI: 10.1111/j.1365-2494.2007.00583.x
Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2007.00583.x/full
    Last checked: 01/31/2014
    Access conditions: Item is within a limited-access website
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.2007.00583.x/pdf
    Last checked: 01/31/2014
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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