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Searching for Rotationable Vegetables for Paratylenchus projectus in Lettuce Greenhouse
Res. Plant Dis. 2020;26:272-278
Published online December 31, 2020
© 2020 The Korean Society of Plant Pathology.

Giyoon Kwon1†, Jongmin Seo1†, Sohee Park1, Heonil Kang1, Namsook Park2, and Insoo Choi1,2*

1Department of Plant Bioscience, College of Natural Resources and Life Science, Pusan National University, Miryang 50463, Korea
2Nematode Research Center, Life and Industry Convergence Research Institute, Pusan National University, Miryang 50463, Korea
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These authors contributed equally to this work.
Received September 29, 2020; Revised December 14, 2020; Accepted December 14, 2020.
cc This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License ( by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
The severe lettuce damage caused by Paratylenchus projectus was first reported in 2019 in Korea. To find high-value rotation crops for the control of P. projectus, nine vegetables, Brassica juncea (leaf mustard), B. rapa subsp. nipposinica (kyona), B. oleracea var. italica (broccoli), B. rapa subsp. chinensis (bok choy), B. oleracea var. viridis (kale), B. oleracea var. gongylodes (kohlrabi), Cichorium endivia (endive), C. intybus (chicory), Ipomoea aquatica (morning glory) were planted in d-10-cm clay pots in greenhouse. The growth of vegetables was compared between inoculated with 3,000 P. projectus per 100 cm3 of soil and non-inoculated. Treatments were replicated 10 times. After 100 days, the reduction of fresh top weight was 30.4% in C. intybus, 35.1% in I. aquatica, 36.9% in B. oleracea var. acephala, 40.5% in C. endivia, 42.1% in B. rapa, 47.5% in B. rapa subsp. nipposinica, 50.4% in B. oleracea var. gonglodes, 56.3% in B. oleracea var. italica, and 66.0% in B. juncea. Nematode multiplication rates (Pf/Pi) were lower in I. aquatica (0.64) and C. endivia (1.1), but higher in B. oleracea var. gongylodes (2.54). Considering these results, I. aquatica is suitable for the rotation crop with lettuce until better rotation crops developed.
Keywords : Leafy vegetable, Lettuce, Parartylenchus projectus, Pin nematode, Rotation crop

December 2020, 26 (4)