HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Boquet, D. Articles by Birchfield, W. Search for Related Content PubMed Articles by Boquet, D. Articles by Birchfield, W. Agricola Articles by Boquet, D. Articles by Birchfield, W.

Inheritance of Resistance to the Wartelle Race of Root-knot Nematode in Soybeans¹

The inheritance of root-knot nematode (RKN) [Meloidogyne incognita (Kofoid and White) Chitwood] resistance in soybeans [Glycine max (L.) Merr.] was studied in the F₁, F₂, and F₃ generations of a cross between resistant D69-6344 and susceptible D69-8178.

Resistant and suspectible parents gave a consistent reaction to RKN regardless of inoculum density. F₁ plants, however, were moderately resistant under low RKN densities, moderately susceptible under medium densities, and highly susceptible at higher inoculum densities. These data indicated that susceptibility to RKN was partially dominant. Frequency distributions of segregating populations indicated inheritance of resistance to RKN was a qualitative character conditioned by one major gene with at least one modifying gene.

Key Words: Meloidogyne incognita • Glycine max (L.) Merr.

² Graduate assistant (now assistant professor of agronomy, N. E. La. Agric. Exp. Stn., St. Joseph, LA 71366), associate professor of agronomy, La. Agric. Exp. Stn., and research plant pathologist, Plant Science Research Division, ARS, USDA, La. State Univ. and A & M College, Baton Rouge, LA 70803, respectively.

Received for publication March 17, 1975.