A New Race (X12) of Soybean Cyst Nematode in China


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Journal of Nematology

Society of Nematologists

Subject: Life Sciences


ISSN: 0022-300X
eISSN: 2640-396X





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VOLUME 49 , ISSUE 3 (September 2017) > List of articles

A New Race (X12) of Soybean Cyst Nematode in China


Keywords : Heterodera glycines, race, soybean, soybean cyst nematode

Citation Information : Journal of Nematology. Volume 49, Issue 3, Pages 321-326, DOI: https://doi.org/10.21307/jofnem-2017-079

License : (CC BY 4.0)

Received Date : 20-March-2017 / Published Online: 05-December-2017

Open Access article funded by National Natural Science Foundation of China (31371652) , Science and Technology Project of Henan Province (162102110141)



The soybean cyst nematode (SCN), Heterodera glycines, is a serious economic threat to soybean-producing regions worldwide. A new SCN population (called race X12) was detected in Shanxi province, China. Race X12 could reproduce on all the indicator lines of both race and Heterodera glycines (HG) type tests. The average number of females on Lee68 (susceptible control) was 171.40 with the lowest Female Index (FI) 61.31 on PI88788 and the highest FI 117.32 on Pickett in the race test. The average number of females on Lee68 was 323.17 with the lowest FI 44.18 on PI88788 and the highest FI 97.83 on PI548316 in the HG type test. ZDD2315 and ZDD24656 are elite resistant germplasms in China. ZDD2315 is highly resistant to race 4, the strongest infection race in the 16 races with FI 1.51 while being highly sensitive to race X12 with FI 64.32. ZDD24656, a variety derived from PI437654 and ZDD2315, is highly resistant to race 1 and race 2. ZDD24656 is highly sensitive to race X12 with FI 99.12. Morphological and molecular studies of J2 and cysts confirmed the population as the SCN H. glycines. This is a new SCN race with stronger virulence than that of race 4 and is a potential threat to soybean production in China.

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