Differences in storage potential of three anthocyaninless mutants in tomato (Lycopersicon esculentum Mill.)
The study was performed on three tomato mutants (isogenic/nearly isogenic lines [IL/NILs]) - anthocyaninless of Hoffmann (ah), anthocyanin without (aw) and baby lea syndrome (bls). It was designed to examine the effect that the absence of condensed
tannins in the testa of the three mutants had on seed longevity. Five months after seed production the quality of all seed was high, the final percentage of germination recorded 10 days after imbibition varying from 95 to 98%. Mutant seeds completed germination significantly more rapidly than
the wild type. Germination of these seed lots after four and six years storage clearly demonstrated different storage tolerances between the wild type and mutant seeds. After four years of seed storage the time to 50% germination in the anthocyaninless mutants was equal or longer than that
of the wild type, whereas after six years of storage all mutant genotypes germinated more slowly than the wild types. Ageing in mutant seeds resulted in a more rapid decrease in seed viability (expressed as final percentage germination) than that in the wild type genotypes. The frequency of
aberrant anaphases in aged mutant seeds was significantly greater than that in wild type aged seeds.
Document Type: Research Article
Publication date: 01 October 2008
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