Skip to main content
Journal of Nematology logoLink to Journal of Nematology
. 1984 Jan;16(1):48–56.

Nematode Population Attrition and Histopathology of Heterodera glycines-Soybean Associations

J R Acedo, V H Dropkin, V D Luedders
PMCID: PMC2618348  PMID: 19295873

Abstract

Selected populations of soybean cyst nematodes were inoculated to roots of compatible and incompatible soybeans. Rates of penetration of infective juveniles of nematode populations selected on PI 209332, PI 89772, and Pickett 71 were equivalent on compatible and incompatible soybean roots. The first two populations averaged about 10% and the last about 5% penetration in 24-hour inoculations of young seedlings. About 14% of those juveniles that entered roots in compatible combinations developed into maturing females, compared with only about 1% in incompatible combinations. Several aberrations from the pattern of syncytial development associated with mature females in compatible hosts were apparent. A rapid necrotic response occurred in both kinds of hosts but was more frequent in incompatible associations. Delayed necrosis and small syncytia were present in some combinations. Those few females that developed in incompatible soybeans were associated with a characteristic syncytium different from the kind seen in roots of compatible hosts.

Keywords: Glycine max, soybean cyst nematode, syncytia, rapid necrotic response

Full Text

The Full Text of this article is available as a PDF (2.0 MB).


Articles from Journal of Nematology are provided here courtesy of Society of Nematologists

RESOURCES