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ARS Home » Midwest Area » Urbana, Illinois » Soybean/maize Germplasm, Pathology, and Genetics Research » Research » Publications at this Location » Publication #106815
Title: INHERITANCE OF RESISTANCE TO PHYTOPHTHORA SOJAE IN THE SOYBEAN PI 567574A

Author
item LEITZ, R - U OF ILL, URBANA
item NICKELL, CECIL - U OF ILL, URBANA
item Hartman, Glen

Submitted to: Soybean Genetics Newsletter
Publication Type: Abstract Only
Publication Acceptance Date: 8/10/1999
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Phytophthora root rot of soybean can cause heavy crop losses. Monogenic race-specific resistance to the causal organism, Phytophthora sojae, is controlled by 13 dominant alleles at seven loci in soybean. Soybean germplasm lines have been identified with new race resistance patterns. These lines need to be characterized to determine the inheritance of that resistance and compared to known sources of resistance. The objective of this study was to characterize the inheritance of resistance to P. sojae in PI 567574A. Results indicate that there are two alleles at independent loci that control resistance in this PI. Allelism studies indicated that the two alleles are Rps1c and Rps3a.