Inheritance of Resistance to Soybean Mosaic Virus in Soybeans and Studies on Seed Transmission

Five tropically adapted soybean (Glycine max (L.) Merrill) lines that varied in their reactions to inoculation with seven strains of soybean mosaic virus (SMV) were used in a study to determine the inheritance of resistance to SMV. F(,1), F(,2), and F(,3) populations were inoculated with SMV strains G1, G2, G3, G4, G5, G6, or G7. Resistance to strains G1 to G7, in PI 424131, was shown to be conditioned by an allele at a single locus, R(,1), which exhibited complete dominance under the conditions of this study. Resistance to strains G5, G6, and G7, in HLS, was shown to be conditioned by an allele at a second locus, R(,2), which also was completely dominant. Evidence indicated that the genes for resistance in PI 324068, PI 341242, and PI 424131 are located at the same locus as the previously identified Rsv allele. In certain environments, plants possessing R(,1)- in the presence of r(,2)r(,2) developed necrotic symptoms when inoculated with strain G7, while plants with R(,1)- in the presence of R(,2)- did not develop any symptoms.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Plant Pathology

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2014

Author dc:creator

• Bowers, Glenn Russell, Jr.

• Agriculture, Plant Pathology

Language dc:language

eng

Identifier

(UMI)AAI8108453

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/67448