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Wolverhampton Intellectual Repository and E-Theses > Research Institutes > Research Institute in Healthcare Science > Cancer Research Group > Salinity induced differences in growth, ion distribution and partitioning in barley between the cultivar Maythorpe and its derived mutant Golden Promise

Please use this identifier to cite or link to this item: http://hdl.handle.net/2436/22172
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Title: Salinity induced differences in growth, ion distribution and partitioning in barley between the cultivar Maythorpe and its derived mutant Golden Promise
Authors: Wei, Wenxue
Bilsborrow, Paul E.
Hooley, Paul
Fincham, Daron A.
Lombi, Enzo
Forster, Brian P.
Citation: Plant and Soil, 250(2): 183–191.
Publisher: Springer Verlag
Journal: Plant and Soil
Issue Date: 2003
URI: http://hdl.handle.net/2436/22172
DOI: 10.1023/A:1022832107999
Additional Links: http://www.springerlink.com/content/t5u877px92127227/
Abstract: Dry matter changes and ion partitioning in two near isogenic barley cultivars Maythorpe (relatively salt sensitive) and Golden Promise (relatively salt tolerant) were studied in response to increasing salinity. Although the growth of both cultivars was significantly reduced by exposure to NaCl, the effect was greater in Maythorpe, whilst Golden Promise maintained an increased ratio of young to old leaf blade. Golden Promise maintained significantly lower Na+ concentrations in young expanding tissues compared with Maythorpe. Partitioning of Cl– was evident in that both varieties maintained lower Cl– concentrations in mesophyll than in epidermal cells. Golden Promise maintained higher K+/Na+ and Ca2+/Na+ ratios in young leaf blade and young sheath tissues than Maythorpe when exposed to salt. Differences in ion partitioning and the maintenance of higher K+ and Ca2+ to Na+ ratios, especially in young growing and recently expanded tissues, would appear to be important mechanisms contributing to the improved salt tolerance of Golden Promise.
Type: Article
Language: en
Keywords: Barley
Hordeum vulgare
Growth
Ion distribution
Salinity
ISSN: 0032079X
15735036
Appears in Collections: Cancer Research Group

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