Assessment of Comparative Virulence and Resistance in Soybean Using Field Isolates of Soybean Rust

Simple item page
dc.contributor.authorMaphosa, Mcebisi
dc.contributor.authorTalwana, Herbert
dc.contributor.authorTukamuhabwa, Phinehas
dc.date.accessioned2025-10-13T07:55:36Z
dc.date.available2025-10-13T07:55:36Z
dc.date.issued2013-04-15
dc.description.abstractA major impediment to breeding for resistance to Asian soybean rust (Phakopsora pachyrhizi) is the lack of stable sources of resistance, due to high variability in the pathogen. The objectives of this study were to assess comparative virulence of five diverse field isolates from major soybean producing areas in Uganda, and identify lines with resistance to isolates of soybean rust in seedling and adult plants under screen house and field conditions respectively. When inoculated with the five field isolates, all twelve lines evaluated showed diverse and mixed reactions, suggesting each location differed in soybean rust races and/or virulence. Experimental sites growing many diverse soybean lines yearly had the greatest diversity of soybean rust. The effectiveness of specific resistance genes was restricted to certain locations and gene Rpp2 previously resistant was ineffective producing a susceptible tan reaction at the seedling stage. A positive correlation between mean lesion density at the seedling stage and adult plant severity indicated that using field isolates to screen for seedling resistance can be a useful breeding approach to extrapolate resistance in adult plants. Overall, these results emphasise the relevance of using field isolates from the target areas to evaluate lines for soybean rust resistance.
dc.identifier.citationMaphosa, M., Talwana, H., & Tukamuhabwa, P. (2013). Assessment of comparative virulence and resistance in soybean using field isolates of soybean rust.
dc.identifier.issn1916-9760
dc.identifier.urihttps://nru.uncst.go.ug/handle/123456789/12122
dc.language.isoen
dc.publisherCanadian Center of Science and Education
dc.titleAssessment of Comparative Virulence and Resistance in Soybean Using Field Isolates of Soybean Rust
dc.typeArticle
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Assessment-of-Comparative-Virulence-and-Resistance-in-Soybean-Using-Field-Isolates-of-Soybean-Rust.pdf
Size:
220.4 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Agricultural and Veterinary Sciences