Characterization of acifluorfen selectivity mechanisms in tomato and related Lycopersicon species

Fourteen tomato (Lycopersicon esculentum) genotypes, Eastern Black nightshade, and 35 wild Lycopersicon accessions were screened for tolerance to acifluorfen. Response to acifluorfen was not species specific, but in general, the cultivated tomato varieties were slightly more tolerant than the wild accessions. From the genotypes initially screened, 15 with differential tolerance were chosen for further study depending on their fresh weight response to aciflourfen as well as their vigor rating after treatment. The relationship of trichome and stomate density, quantity of epicuticular wax and cuticle, and wax composition to acifluorfen tolerance was determined. There was no correlation between trichome density and acifluorfen tolerance or susceptibility, however, an inverse relationship between stomate density and tolerance was observed. Amount and composition of the epicuticular wax and the cuticle differed among genotypes, but did not correlate to acifluorfen tolerance.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Crop Sciences

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2011

Author dc:creator

• Ricotta, Jacqueline Anne

Contributors dc:contributor

• Masiunas, John B.

• Biology, Plant Physiology

Statement dc:rights

• Copyright 1990 Ricotta, Jacqueline Anne

Language dc:language

eng

Identifier

AAI9114387
(UMI)AAI9114387

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/19597