Resistance in Soybeans, <i>Glycine Max</i> L,. Merr., to the Reniform Nematode¹

Abstract

Of eight soybean cultivars tested ‘Pickett’ and ‘Dyer’, were found to be resistant to the reinform nematode, Rotylenchulus reniformis . In the presence of Pickett and Dyer, the soil counts of renifonni nematodes were significantly reduced from an initial 10,000 larvae to less than 500 per pot over a 2.5‐month period. Cultivars resistant to the root knot, Meloidogyne spp., did not possess resistance to the reniform nematode but those resistant to the soybean cyst nematodes, Heterodera glycines , did. Under the conditions of the test, the seed yields of Pickett increased while those of ‘Hood’ decreased when inoculated with reniform nematodes.