A Second Gene for Resistance to Peanut Mottle Virus in Soybeans1
- E. R. Shipe,
- G. R. Buss and
- S. A. Tolin2
Peanut mottle virus (PMV) occurs naturally in peanuts (Arachis hypogaea L.), soybeans [Glycine max (L.) Merrill], and a few leguminous weed species. This disease is widespread on soybeans in areas of the southeastern U. S. where both peanuts and soybeans are grown. In an effort to identify additional genes for resistance to PMV in soybeans, the allelic relationships between genes for resistance from various germplasm sources were studied. Crosses were made between resistant and susceptible lines and among resistant lines. The F1, F2, and F3, generation seedlings derived from selected crosses were tested in the greenhouse for reaction to a PMV isolate (PMV-S/V74S). It was shown that resistance in the cultivar ‘Peking’ is conditioned by a single recessive gene, designated rpv2, that has not been previously reported.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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