pnut pnut Peanut Science 0095-3679 0095-3679 American Peanut Research and Education Society 10.3146/i0095-3679-8-1-12 Articles Resistance to Peanut Stunt Virus in Cultivated and Wild Arachis Species T. T. Herbert and H. T. Stalker 2 Professor Emeritus, Department of Plant Pathology, and Assistant Professor, Department of Crop Science, N. C. State University, Raleigh, NC 27650, respectively

1Paper No. 6783 of the Journal Series of the North Carolina Agricultural Research Service, Raleigh, NC 27650. Financial support from the United States Department of Agriculture and contributions of plant materials and valuable advice by Dr. W. C. Gregory are gratefully acknowledged.

 1 1981 8 1 45 47 2 4 1981 American Peanut Research and Education Society 1981 American Peanut Research and Education Society Abstract

Approximately 4000 lines (cultivars, introductions, breeding lines, and radiation-induced mutants) of cultivated peanuts (Arachis hypogaea L.) were tested for resistance to peanut stunt virus (PSV), and all were susceptible to PSV infection. Twenty-one lines were less severely damaged than the others. In addition, 90 collections of wild Arachis species including 55 members of section Rhizomatosae, 17 of Arachis, 16 of Erectoides, and one each of Caulorhizae and Extranervosae were tested. Several collections in sections Arachis, Caulorhizae, Erectoides and Rhizomatosae were highly resistant to PSV. Collections of A. duranensis, A. villosa, and a hybrid derivative of A. villosa-A. correntina have the most immediate potential for utilization. The reactions of a few F1 hybrids of Arachis species indicated that resistance to peanut stunt virus is not conditioned by a single dominant gene. Resistance of wild species could be used to develop resistant cultivars.

 Key Words Groundnut; , Arachis hypogaea; , peanut stunt virus