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Acta Agronomica Sinica ›› 2021, Vol. 47 ›› Issue (2): 237-244.doi: 10.3724/SP.J.1006.2021.04111


Distribution survey of soybean cyst nematode of new race X12 in Gujiao city, Shanxi province

LIAN Yun1(), WANG Jin-She1, WEI He1, LI Jin-Ying1, GONG Gui-Ming2, WANG Shu-Feng1, ZHANG Jing-Peng1, LI Mao-Lin1, GUO Jian-Qiu3, LU Wei-Quo1,*()   

  1. 1Institute of Industrial Crops, Henan Academy of Agricultural Sciences / Zhengzhou Subcenter of National Soybean Improvement Center / Key Laboratory of Oil Crops in Huanghuaihai Plain, Ministry of Agriculture and Rural Affairs / Henan Provincial Key Laboratory for Oil Crops Inprovement, Zhengzhou 450002, Henan, China
    2Gujiao Seed Service Station, Taiyuan 030200, Shanxi, China
    3Luoyang Academy of Agriculture and Forestry Sciences, Luoyang 471023, Henan, China
  • Received:2020-05-18 Accepted:2020-09-13 Online:2021-02-12 Published:2020-09-22
  • Contact: LU Wei-Quo E-mail:lianyun262@126.com;123bean@163.com
  • Supported by:
    Scientific and Technological Project of Henan Province(202102110158);Central Plains Science and Technology Innovation Leading Talent Project(194200510003);National Natural Science Foundation of China(31901501)


X12 was a new race of soybean cyst nematode (SCN) with super strong pathogenicity and it was first detected in Xingjiashe county, Gujiao city, Shanxi province, China in 2012, which was a huge threat to soybean production. The research of race X12 distribution is meaningful for developing management strategies to prevent race X12 population from spreading. Therefore, a survey for the distribution of soybean cyst nematode race X12 in Gujiao city was conducted in 2019 and 2020. A distribution of races was constructed based on Riggs model. The race distribution was discussed in this study. A total of 33 soil samples infected soybean cyst nematode were collected. Twenty-six were identified as physiological subtypes, accounting for 78.8% of the samples, in which race 2 and race 4 accounted for 57.7% (15 samples) and 42.3% (11 samples), respectively. In general, race X12 was determined if race 4 population virulent on ZDD2315 accession with female index (FI) > 10. In 11 samples determined as race 4, including two samples were further determined as race X12 including the sample collected from Xingjiashe location, which was the original location detected as race X12 in 2012. There were three other SCN populations which determined as race 4 could virulent on ZDD2315 but with FI < 10. There were 73.1% and 57.7% of populations with FI > 50 among 26 evaluated populations on Peking and PI88788, respectively. The results showed that race X12 population were also detected in Hekouzhen except Xingjiashe. Only race 2 and race 4 were detected around Xingjiashe, covered 810 km2. SCN populations with 3 samples were likely to preferentially evolve from subspecies 4 to subspecies X12. The results showed that strong and effective measures should be taken in Gujiao city to slow down the virulence escalation of SCN and the spread of X12 species.

Key words: soybean, soybean cyst nematode, X12, survey, physiological race

Fig. 1

Race distribution of soybean cyst nematode of new race X12 in Gujiao city (surveyed in 2019 and 2020) N: samples infected with SCN but without identification results; R2: race 2; R4: race 4; X12: race X12. Red solid triangle 1 stands for the original race X12 discovery location; red solid triangle 2 stands for determined as race X12 location according to this survey; the bigger blue solid circle stands for race 4 with potential prior determined as race X12 in the future."

Table 1

Virulence phenotypes of twenty-six samples collected from Gujiao city in 2019 and 2020"

Race a (%)
Cysts on Lee b
胞囊指数Female index
Pickett Peking PI88788 (MU) PI90763 ZDD2315
Race 2 (57.7)
1 95 98.9 270.7 85.1 1.9 1.1
4 698 94.8 83.3 26.1 0.5 4.1
6 543 38.9 30.6 33.4 6.4 0.1
8 170 39.6 80.3 91.2 1.4 0.4
9 217 48.0 22.8 26.1 5.1 1.2
11 129 37.7 28.0 84.6 2.7 1.8
12 284 61.7 100.4 58.9 0.5 1.3
16 242 81.1 59.9 60.6 0.2 0.1
18 379 80.9 75.5 31.2 2.6 1.2
19 80 102.4 83.9 63.6 4.2 1.8
20 64 66.7 42.3 40.4 1.3 0.4
24 509 86.4 63.8 98.1 0.4 0.2
25 404 100.7 87.3 69.0 4.5 0.2
29 336 58.7 102.5 32.6 1.0 0.2
31 547 68.3 77.8 87.4 3.7 0.1
X12小种c (7.7)
Race X12 c (7.7)
1 438 67.6 73.7 36.0 38.0 32.4
2 520 93.3 79.8 84.7 94.1 10.7
Race a (%)
Cysts on Lee b
胞囊指数Female index
Pickett Peking PI88788 (MU) PI90763 ZDD2315
Potential race X12 (11.5)
5 258.6 173.9 86.1 69.8 39.0 7.6
21 479 102.7 80.5 61.0 13.6 9.6
27 249 69.3 62.9 32.3 12.2 6.4
Race 4 (23.1)
10 298 91.6 61.5 55.6 15.2 1.1
14 550 37.2 69.5 73.3 17.7 0.4
17 706 86.2 77.2 82.1 72.7 0.8
26 815 84.7 82.9 55.2 12.2 0.1
28 251 53.3 147.5 75.6 16.0 1.8
33 633 91.5 90.8 73.5 34.7 0.4

Table 2

Samples of different physiological subtypes collected from GuJiao city with HG type in 2019 and 2020"

编号 Number
16 14 21 30
Number of cysts on Lee
482.7 156.0 787.0 340.7
Female index
Peking 45.5 69.7 65.9 79.8
PI88788 53.0 105.6 61.2 76.1
PI90763 3.5 18.2 14.4 12.7
PI437654 2.3 3.6 0.8 105.0
PI209332 15.8 50.3 14.4 87.4
PI89772 44.7 102.4 21.3 141.1
PI548316 70.0 81.8 12.5 161.7
Race model Race 2 Race 4 Potential X12 Race X12
HG type
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