Korean journal of applied entomology (한국응용곤충학회지)

Korean Society of Applied Entomology (한국응용곤충학회)
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Plant Parasitic Nematode Fauna of Heterodera glycines and H. sojae, and Soil Characteristics of Soybean Fields in Gangwon-do and Chungcheongbuk-do

강원과 충북지역 콩씨스트선충과 반짝이콩씨스트선충의 분포상 및 토양 특성

  • Kim, Youngjoon (Department of Ecological Science, Kyungpook National University) ;
  • Lee, Dong Woon (Department of Ecological Science, Kyungpook National University)
  • Received : 2019.01.14
  • Accepted : 2019.02.13
  • Published : 2019.03.01
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Abstract

A survey on the geographical distribution of two soybean cyst nematodes, Heterodera glycines and Heterodera sojae, was conducted in soybean cultivation areas in the Gangwon-do and Chungcheongbuk-do provinces. In 67 fields of 10 counties or cities in Gangwon-do province, H. glycines was detected in 13 fields, H. sojae was detected in five fields, and both species were found in two fields. In 84 fields of nine counties or cities in Chungcheongbuk-do province, H. glycines was detected in 27 fields, H. sojae was detected in four fields, and both species were found in five fields. The diversity and dominance of the plant parasitic nematodes in the Gangwon and Chungbuk provinces were not significantly different among the soybean cultivars. The diversity and dominance index of the plant parasitic nematodes according to the presence or absence of soybean cyst nematodes did not show any significant difference between the soybean cultivation areas of both provinces. The relationship between the soybean cyst nematodes and soil chemical properties showed a low coefficient of determination, and the density of soybean cyst nematodes tended to increase as the pH and available phosphate content in soil samples increased. The soil texture of cyst nematode-detected fields was mostly sandy soils, which amounted to about 60% of the total. As the clay and silt content increased, the density of soybean cyst nematodes tended to decrease, and as the sand content increased, the density of cyst nematodes tended to increase.

콩 재배지에서 콩씨스트선충(Heterodera glycines)과 반짝이씨스트선충(Heterodera sojae)의 지리적 분포에 관한 조사를 강원도와 충청북도 지역에서 수행하였다. 강원지역 10개시군, 67개 포장에서는 콩씨스트선충이 13개소, 반짝이콩씨스트선충이 5개소에서 검출되었고, 두 선충 혼재하는 포장도 2곳이었다. 충북지역 9개 시군에서는 84개 조사 포장 중 27개소에서 콩씨스트선충이 검출되었고, 반짝이콩씨스트선충 4개소, 두선충 혼재 발생지 5곳이었다. 강원, 충북 지역에서 콩씨스트선충류 검출 여부에 따라 발생하는 다른 식물기생성선충 속의 다양성과 우점도 지수는 콩 재배지 사이에 유의한 차이를 나타내지 않았다. 콩씨스트선충과 토양 화학성 사이의 관계 분석에서는 결정계수가 낮게 나타났으며 콩씨스트선충의 밀도가 높은 토양에서는 pH와 가용성 인산 함량이 높은 것으로 나타났다. 씨스트선충이 검출된 토양의 토성은 사질토가 전체 샘플의 60%를 차지하였다. 점토와 미사의 함량이 높은 토양에서는 콩씨스트선충의 밀도가 낮은 경향을 보였고, 모래 함량이 높은 토양에서 밀도는 높게 나타났다.

Keywords

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Fig. 1. Sampling sites of the survey area for comparing soil characteristics in Gangwon and Chungcheongbuk-do.

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Fig. 2. Soil textures of soybean fields in Gangwon and Chungcheongbuk-do province.

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Fig. 3. Correlation between soil textures and the number of soybean cysts in cyst-detected soils from Gangwon-do.

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Fig. 4. Correlation between soil textures and the number of soybean cysts in cyst-detected soils from Chungcheongbuk-do.

Table 1. Number of cyst-detected samples and density of cysts in the soybean fields of Gangwon-do

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Table 2. Number of cyst-detected samples and density of cysts in the soybean fields of Chungcheongbuk-do

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Table 3. Plant parasitic nematode fauna in the soybean fields of Gangwon-do

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Table 4. Plant parasitic nematode fauna in the soybean fields of Chungcheongbuk-do

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Table 5. Comparison of genus diversity and dominancy index (mean ± SD) of plant parasitic nematodes between soybean field soils with and without soybean cyst nematodes in Gangwon-do and Chungcheongbuk-do

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Table 6. Chemical characteristics of soybean field soils in Gangwon-do and Chungcheongbuk-do

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Table 7. Correlation index between the density of soybean cyst nematodes and chemical properties of surveyed soils

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