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

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

Open Access
|Jul 2017

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.

DOI: https://doi.org/10.21307/jofnem-2017-036 | Journal eISSN: 2640-396X | Journal ISSN: 0022-300X
Language: English
Page range: 280 - 289
Submitted on: Jun 28, 2016
Accepted on: Oct 8, 2021
Published on: Jul 21, 2017
Published by: Society of Nematologists, Inc.
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2017 Heonil Kang, Geun Eun, Jihye Ha, Yongchul Kim, Namsook Park, Donggeun Kim, Insoo Choi, published by Society of Nematologists, Inc.
This work is licensed under the Creative Commons Attribution 4.0 License.