Abstract
The objective of the research was to select genotypes from the second generation of the first backcross (F 2 BC 1 ) between the tomato cultivar for processing S. lycopersicum cultivar Redencao and the wild access S. habrochaites var. hirsutum PI-127826, with high levels of zingiberene (ZGB), resistant to the mite Tetranychus urticae Koch and the whitefly ( Bemisia tabaci biotype B). From the F 2 BC 1 population the ZGB content was quantified and then five plants with high zingiberene was selected (RVTZ 2011-079-117, RVTZ 2011-079-185, RVTZ 2011-079-335, RVTZ 2011-079-345 and RVTZ 2011-079-503) and four with low zingiberene content (RVTZ 2011-079-417, RVTZ 2011-331-460, RVTZ 2011-079-538 and RVTZ 2011-079-548). Genotypes selected for high and low ZGB content and the parentals S. habrochaites var. hirsutum access PI-127826 and ‘Redencao’ were evaluated for repellency to the mite T. urticae and the whitefly Bemisia tabaci biotype B. There was a significant and inverse correlation between ZGB content and average distances traveled by mites on tomato leaflets. Plants of PI-127826, wild parental with high ZGB content, showed averages for number of whitefly eggs significantly lower in relation to the group of F 2 BC 1 , genotypes with low-ZGB. Genotypes of the F 2 BC 1 generation with high zingiberene levels RVTZ 2011-079-117, RVTZ 2011-079-185, RVTZ 2011-079-335, RVTZ 2011-079-345 and RVTZ 2011-079-503 are promising for progress in achieving lines with background for processing, resistant to arthropod pests. Among them RVTZ 2011-079-117 stands out for both pests evaluated.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
