<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Soybean cyst nematode (SCN, <italic>Heterodera glycines</italic> Ichinohe) is a serious soybean pathogen worldwide. HG Type 0 had been a predominant SCN in Heilongjiang province, the largest soybean (<italic>Glycine max</italic> L.) producing region in China. Recently, increased virulence on resistant cultivars originally developed for resistance to HG Type 0 was observed in fields. In order to identify new cultivars resistant to local SCN populations, two soil samples were collected from two counties (Anda and Wuchang) in which increased virulence on resistant cultivars occurred, and single-cyst cultures from each soil sample were maintained for more than five generations. Two single-cyst cultures from the Anda sample were identified as HG Type 1.2.3.5.6.7 and HG Type 1.3, and one single-cyst culture from Wuchang was identified as HG Type 2.5.7. Then 18 soybean genotypes, including 11 local cultivars originally developed for resistance to HG Type 0, were used to evaluate resistance response to the three identified SCN populations. Various levels of resistance or susceptibility to the three SCN populations were observed among 18 genotypes. Two tests produced similar results for the three SCN populations. Both ‘Kangxian12’ and ‘Kangxian13’ showed resistance or moderate resistance to HG Type 2.5.7, HG Type 1.2.3.5.6.7 and HG Type 1.3. The germplasm ‘09-138’ was resistant to HG Type 1.3 and HG Type 1.2.3.5.6.7. Cultivars with ‘Peking’-resistance were resistant or moderately resistant to HG Type 2.5.7 in both tests except for ‘Kangxian8’ in test 1. The identified resistant varieties would be valuable sources of breeding materials for resistance against multiple SCN populations.</p>
</abstract>

Soybean cyst nematode (SCN, Heterodera glycines Ichinohe) is a serious soybean pathogen worldwide. HG Type 0 had been a predominant SCN in Heilongjiang province, the largest soybean (Glycine max L.) producing region in China. Recently, increased virulence on resistant cultivars originally developed for resistance to HG Type 0 was observed in fields. In order to identify new cultivars resistant to local SCN populations, two soil samples were collected from two counties (Anda and Wuchang) in which increased virulence on resistant cultivars occurred, and single-cyst cultures from each soil sample were maintained for more than five generations. Two single-cyst cultures from the Anda sample were identified as HG Type 1.2.3.5.6.7 and HG Type 1.3, and one single-cyst culture from Wuchang was identified as HG Type 2.5.7. Then 18 soybean genotypes, including 11 local cultivars originally developed for resistance to HG Type 0, were used to evaluate resistance response to the three identified SCN populations. Various levels of resistance or susceptibility to the three SCN populations were observed among 18 genotypes. Two tests produced similar results for the three SCN populations. Both ‘Kangxian12’ and ‘Kangxian13’ showed resistance or moderate resistance to HG Type 2.5.7, HG Type 1.2.3.5.6.7 and HG Type 1.3. The germplasm ‘09-138’ was resistant to HG Type 1.3 and HG Type 1.2.3.5.6.7. Cultivars with ‘Peking’-resistance were resistant or moderately resistant to HG Type 2.5.7 in both tests except for ‘Kangxian8’ in test 1. The identified resistant varieties would be valuable sources of breeding materials for resistance against multiple SCN populations.

Identification of HG Types of Soybean Cyst Nematode <italic>Heterodera glycines</italic> and Resistance Screening on Soybean Genotypes in Northeast China

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

Identification of HG Types of Soybean Cyst Nematode  and Resistance Screening on Soybean Genotypes in Northeast China

right-running

Resistance screening to Heterodera glycines populations

Soybean cyst nematode (SCN, Heterodera glycines Ichinohe) is a serious soybean pathogen worldwide. HG Type 0 had been a predominant SCN in Heilongjiang...

Identification of HG Types of Soybean Cyst Nematode Heterodera glycines and Resistance Screening on Soybean Genotypes in Northeast China

Article Category: research-article

Published Online: May 31, 2018

Page range: 41 - 50

Accepted: Jun 27, 2017

DOI: https://doi.org/10.21307/jofnem-2018-007

Keywords
HG type, resistance screening, soybean, Soybean cyst nematodes

© 2018 Cui Hua et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Identification of HG Types of Soybean Cyst Nematode Heterodera glycines and Resistance Screening on Soybean Genotypes in Northeast China

Article Category: research-article

Published Online: May 31, 2018

Page range: 41 - 50

Accepted: Jun 27, 2017

DOI: https://doi.org/10.21307/jofnem-2018-007

KeywordsHG type, resistance screening, soybean, Soybean cyst nematodes

© 2018 Cui Hua et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
HG type, resistance screening, soybean, Soybean cyst nematodes