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ARS Home » Pacific West Area » Pullman, Washington » Grain Legume Genetics Physiology Research » Research » Publications at this Location » Publication #221025
Title: Application of a detached leaf assay to evaluate resistance to Phoma medicaginis var. pinodella in pea (Pisum sativum L.)

Author
item WANG, XIN - WASHINGTON STATE UNIV.
item McPhee, Kevin

Submitted to: Pisum Genetics
Publication Type: Abstract Only
Publication Acceptance Date: 11/20/2007
Publication Date: 12/20/2007
Citation: Wang, X., Mcphee, K.E. 2007. Application of a detached leaf assay to evaluate resistance to Phoma medicaginis var. pinodella in pea (Pisum sativum L.). Pisum Genetics.

Interpretive Summary:

Technical Abstract: Phoma medicaginis var. pinodella contributes to the Ascochyta blight complex of pea. Fall-sown peas are exposed to cool moist conditions in the spring which are favorable for development of the disease. Thirty-five registered cultivars, and breeding lines were evaluated for disease development based on a detached leaf assay. Significant differences in lesion expansion were observed and ranged from 2.6 to 173.1 mm2 9 days after inoculation. These results indicate that genetic resistance can be exploited in breeding programs and identifies mapping populations which can be used to validate and expand our knowledge of published QTL for resistance.