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Comparative osmotic adjustments in barley and tetraploid wheats
Author(s) -
Teulat B.,
Rekika D.,
Nachit M. M.,
Monneveux P.
Publication year - 1997
Publication title -
plant breeding
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.583
H-Index - 71
eISSN - 1439-0523
pISSN - 0179-9541
DOI - 10.1111/j.1439-0523.1997.tb02183.x
Subject(s) - triticum turgidum , biology , osmotic pressure , agronomy , poaceae , hordeum vulgare , hordeum , drought tolerance , osmotic shock , drought resistance , botany , gene , genetics
Five barley ( Hordeum rulgare L.), five durum wheat ( Triticum turgidum concar. durum L.) and one wild emmer wheat ( Triticum turgidum conrar dicoccoides ) genotypes from different origins and differing for drought tolerance and potential yield, were studied for their osmotic adjustment capacity at the same stage and under similar water stress conditions. Differences for water status parameters between barley and tetraploid wheat genotypes were noted and discussed. The lowest osmotic adjustment capacities were noted in drought susceptible varieties, while a high capacity was found in genotypes exhibiting a high yield stability across contrasting environments. Relative water content, leaf osmotic potential and accumulation of soluble sugars were found to be highly related with osmotic adjustment: they could be used as criteria for a rapid evaluation of osmotic adjustment in segregating populations.