Journal of Economic Entomology (2005) 98, 595-602

From Pestinfo-Wiki
Jump to: navigation, search

Nandi Nagaraj, John C. Reese, Mitchell R. Tuinstra, C. Michael Smith, Paul St. Amand, M.B. Kirkham, Kenneth D. Kofoid, Leslie R. Campbell and Gerald. E. Wilde (2005)
Molecular mapping of sorghum genes expressing tolerance to damage by greenbug (Homoptera: Aphididae)
Journal of Economic Entomology 98 (2), 595-602
Abstract: Genetic linkage maps are fundamental for the localization of genes conferring tolerance to greenbug, Schizaphis graminum (Rondani), feeding damage in sorghum, Sorghum bicolor (L.) Moench. Thirteen linkage groups (LGs) containing 60 simple sequence repeat (SSR) loci were mapped by using a set of sorghum recombinant inbred lines (RILs) obtained from the cross '96-4121' (greenbug-tolerant parent) x Redlan (greenbug-susceptible parent). The LG spanned a distance of 603.5 cM, with the number of loci per LG varying from 2 to 14. Seventeen additional SSR loci were unlinked at a log of odds value of 3.0. Based on chlorophyll loss occurring after greenbug feeding, visual damage ratings, and soil plant analysis development (SPAD), chlorophyll-loss indices were recorded for each RIL and for the parents used in the cross. Composite-interval mapping identified three quantitative trait loci (QTLs) associated with biotype I and five QTLs associated with biotype K. The amount of phenotypic variation explained by these QTLs ranged from 9 to 19.6%. The identification of QTLs that influence greenbug tolerance will not only facilitate the use of marker-assisted selection in sorghum breeding programs but also will provide a solid foundation for detailed characterization of individual loci implicated in greenbug tolerance in sorghum.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Full text of article
Database assignments for author(s): Charles Michael Smith, Mitchell R. Tuinstra

Research topic(s) for pests/diseases/weeds:
resistance/tolerance/defence of host

Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Schizaphis graminum Sorghum (crop)
Retrieved from "https://wiki.pestinfo.org/w/index.php?title=Journal_of_Economic_Entomology_(2005)_98,_595-602&oldid=526722"