Browsing by Author "Barria, Bernardita N."

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    • Hydroxamic acid content of perennial triticeae 
      Copaja Castillo, Sylvia; Barria, Bernardita N.; Niemeyer Marich, August (1991)
      Ninety-four accessions of perennial Triticeae were examined for content of the hydroxamic acids DIBOA and DIMBOA. Levels of DIBOA (up to 44 mmolkg-1 fr. wt) were higher than those of DIMBOA (up to 4.5 mmol kg-1 fr.wt). The ...
    • Occurrence of diboa in wild Hordeum species and its relation to aphid resistance 
      Barria, Bernardita N.; Copaja Castillo, Sylvia; Niemeyer Marich, August (1991)
      The secondary metabolise 2,4-dihydroxy-1,4-benzoxazin-3-one (DIBOA) was found in seedlings of wild Hordeum species, but not of cultivated barley (Hordeum vulgare). DIBOA levels correlated negatively with performance of the ...