Reaction of Soybean Cyst Nematode Resistant Plant Introductions to Root-Knot and Reniform Nematodes

Abstract

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. Out of these accessions, 64 PIs were identified with high or moderate resistance to RKN. Of these 64 lines, 24 accessions showed good resistance to both RKN and RN. These new sources of resistance to multiple nematodes will be valuable materials for soybean breeding programs to develop new resistant cultivars that can overcome yield losses caused by one or more of these nematode species.

Evaluation of Soybean Germplasm for Resistance to Multiple Nematode Species: Heterodera glycines, Meloidogyne incognita, and Rotylenchulus reniformis

“…Presence or absence of Rhg4 in rhg1 Peking-type genotypes did not have any effect RN resistance. This observation was in agreement with overlapping rhg1 locus region for SCN resistance (Cook et al, 2012) and a previously mapped QTL on chromosome 18 for RN resistance (Ha et al, 2007;Jiao et al, 2015;Lee et al, 2015). Indication about potential genetic association between SCN and RN resistance in soybean was reported in 1970 (Rebois et al, 1970).…”

“…Seeds of each line were planted in Ray Leach Cone-tainers (20.6 cm long) filled with fumigated sandy loam soil. Recently, Lee et al (2015) screened a set of 120 soybean PIs (MG I-VII) resistant to SCN and reported 64 lines with high or moderate resistance to SRKN. The experiment was arranged in a Harris et al (2003) evaluated 608 accessions recently imported from southern China and identified seven lines resistant to SRKN.…”

“…Pham et al (2013) reported 92 resistant and three moderately resistant lines out of 165 phenotyped PIs, breeding lines, and modern cultivars. Recently, Lee et al (2015) screened a set of 120 soybean PIs (MG I-VII) resistant to SCN and reported 64 lines with high or moderate resistance to SRKN.…”

QTL Underlying Reniform Nematode Resistance in Soybean Cultivar Hartwig

“…Among nematodes, soybean cyst nematode (SCN, Heterodera glycines Ichinohe), southern root-knot nematode [RKN, Meloidogyne incognita (Kofoid and White) Chitwood], and reniform nematode (RN, Rotylenchlus reniformis Linford and Oliveria) are often the most problematic in soybean yield production (Robbin et al 1994a;Koenning and Wrather 2010). Nematode management options include nematicide application, rotation with non-host crop, and the use of resistant cultivars (Jiao et al 2015;Lee et al 2015). An estimation of $1 billion loss annually due to SCN has been reported (Wrather and Koenning 2009), therefore breeding SCN resistant cultivars has been the top priority.…”

“…An estimation of $1 billion loss annually due to SCN has been reported (Wrather and Koenning 2009), therefore breeding SCN resistant cultivars has been the top priority. However, the continuous breeding for SCN resistant cultivars may accelerate selection for other nematode pests, hence breeding cultivars with multiple nematode resistance is crucial (Schmitt and Barker 1988;Lee et al 2015). Many cultivars that are resistant to SCN but not RKN or RN have been reported.…”