<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Anew soybean cyst nematode <italic>Heterodera sojae</italic> n. sp. was found from the roots of soybean plants in Korea. Cysts of <italic>H. sojae</italic> n. sp. appeared more round, shining, and darker than that of <italic>H. glycines</italic>. Morphologically, <italic>H. sojae</italic> n. sp. differed from <italic>H. glycines</italic> by fenestra length (23.5–54.2 μm vs. 30–70 μm),vulval silt length (9.0–24.4 μm vs. 43–60 μm), tail length of J2 (54.3–74.8 μm vs. 40–61 μm),and hyaline part of J2 (32.6–46.3 μm vs. 20–30 μm). It is distinguished from <italic>H. elachista</italic> by larger cyst (513.4–778.3 μm × 343.4– 567.1 μm vs. 350–560 μm × 250– 450 μm) and longer stylet length of J2 (23.8–25.3 μm vs. 17–19 μm). Molecular analysis of rRNA large subunit (LSU) D2–D3 segments and ITS gene sequence shows that <italic>H. sojae</italic> n. sp. is more close to rice cyst nematode <italic>H. elachista</italic> than <italic>H. glycines. Heterodera sojae</italic> n.sp. was widely distributed in Korea. It was found from soybean fields of all three provinces sampled.</p></abstract>

Anew soybean cyst nematode Heterodera sojae n. sp. was found from the roots of soybean plants in Korea. Cysts of H. sojae n. sp. appeared more round, shining, and darker than that of H. glycines. Morphologically, H. sojae n. sp. differed from H. glycines by fenestra length (23.5–54.2 μm vs. 30–70 μm),vulval silt length (9.0–24.4 μm vs. 43–60 μm), tail length of J2 (54.3–74.8 μm vs. 40–61 μm),and hyaline part of J2 (32.6–46.3 μm vs. 20–30 μm). It is distinguished from H. elachista by larger cyst (513.4–778.3 μm × 343.4– 567.1 μm vs. 350–560 μm × 250– 450 μm) and longer stylet length of J2 (23.8–25.3 μm vs. 17–19 μm). Molecular analysis of rRNA large subunit (LSU) D2–D3 segments and ITS gene sequence shows that H. sojae n. sp. is more close to rice cyst nematode H. elachista than H. glycines. Heterodera sojae n.sp. was widely distributed in Korea. It was found from soybean fields of all three provinces sampled.

New Cyst Nematode, <italic>Heterodera sojae</italic> n. sp. (Nematoda: Heteroderidae) from Soybean in Korea

Journal of Nematology

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

New Cyst Nematode,  n. sp. (Nematoda: Heteroderidae) from Soybean in Korea

Anew soybean cyst nematode Heterodera sojae n. sp. was found from the roots of soybean plants in Korea. Cysts of H. sojae n. sp. appeared more round, shining,...

New Cyst Nematode, Heterodera sojae n. sp. (Nematoda: Heteroderidae) from Soybean in Korea

Published Online: Jul 21, 2017

Page range: 280 - 289

Received: Jun 28, 2016

Accepted: Oct 08, 2021

DOI: https://doi.org/10.21307/jofnem-2017-036

Keywords
n. sp., morphology, phylogenetic, soybean, taxonomy

© 2016 Heonil Kang et al., published by Sciendo

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

New Cyst Nematode, Heterodera sojae n. sp. (Nematoda: Heteroderidae) from Soybean in Korea

Published Online: Jul 21, 2017

Page range: 280 - 289

Received: Jun 28, 2016

Accepted: Oct 08, 2021

DOI: https://doi.org/10.21307/jofnem-2017-036

Keywordsn. sp., morphology, phylogenetic, soybean, taxonomy

© 2016 Heonil Kang et al., published by Sciendo

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

Keywords
n. sp., morphology, phylogenetic, soybean, taxonomy