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ARS Home » Pacific West Area » Pullman, Washington » Plant Germplasm Introduction and Testing Research » Research » Publications at this Location » Publication #413316
Research Project: Genetic Resource and Information Management for Pulse, Temperate Forage Legume, Oilseed, Vegetable, Grasses, Sugar, Ornamental, and Other Crops

Location: Plant Germplasm Introduction and Testing Research

Title: Pea PI 180693 – Root Rot Resistance

Author
item Coyne, Clarice - Clare
item Warburton, Marilyn
item Volk, Gayle

Submitted to: Book Chapter
Publication Type: Book / Chapter
Publication Acceptance Date: 5/15/2024
Publication Date: 5/21/2024
Citation: Coyne, C.J., Warburton, M.L., Volk, G.M. 2024. Pea PI 180693 – Root Rot Resistance. In: Volk GM, Chen K, Byrne P (Eds.) Plant Genetic Resources: Success Stories. Fort Collins, Colorado: Colorado State University. Available from https://colostate.pressbooks.pub/pgrsuccessstories/chapter/pea-pi-180693-root-rot-resistance/.

Interpretive Summary: USDA plant introductions are important sources of disease resistances and tolerances to devastating plant pathogens. A pea (Pisum sativum L.) plant genetic resource introduction, PI 180693, provided multiple disease resistance genes for breeding new cultivars with partial resistance to Aphanomyces root rot, Fusarium root rot and Fusarium wilt. The results were the release of breeding lines and indirectly the release of the first tolerant cultivars by public and private pea breeding programs.

Technical Abstract: Aphanomyces root rot is a devastating oomycete (a fungal-like protist) pathogen that causes up to 100% yield loss in peas. PI 180693, a pea land race named ‘HOHENHEIMER PINK-FLOWERED’ that was accessioned in 1949 from Germany, was identified as a source of resistance to Aphanomyces root rot by Kraft (1992). A succession of improved breeding lines for the dry and fresh pea markets were released containing the resistance alleles from PI 180693 for Aphanomyces root rot as well as resistance for Fusarium root rot (Kraft, 1992; Kraft & Coffman, 2000; Coyne et al., 2008; McGee et al., 2012) and Fusarium wilt (Kraft & Coffman, 2000). A major gene providing increased resistance to Aphanomyces root rot was identified from PI 180693 and verified in a new population of lines derived from a cross between PI 180693 and a susceptible parent (Hamon et al., 2011; 2013; Lavaud et al., 2015). A major QTL/gene providing increased resistance to Fusarium root rot was identified by Coyne et al., (2015) and confirmed in a second population (Coyne et al., 2019). The identification of the genes responsible for Aphanomyces and Fusarium root rot tolerances and the creation of tolerant breeding lines paved the way for release of the first partially resistant cultivars by public and private pea breeding programs.