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http://dx.doi.org/10.5423/RPD.2014.20.2.107

Effect of Density of Helicotylenchus dihystera on Growth of Solanum lycopersicum  

Kim, Donggeun (Organic Agriculture Research Institute)
Ryu, Younghyun (Organic Agriculture Research Institute)
Lee, Younsu (Department of Applied Plant Science, Kangwon National University)
Choi, Insoo (Department of Plant Bioscience, Pusan National University)
Hu, Changsuk (Organic Agriculture Research Institute)
Publication Information
Research in Plant Disease / v.20, no.2, 2014 , pp. 107-111 More about this Journal
Abstract
A greenhouse experiment was conducted to examine the effect of initial population density (Pi) of Helicotylenchus dihystera on six commercial tomato cultivars. Two-week-old tomato seedlings of six commercial cultivars were transplanted in d-10-cm clay pot and was inoculated with to give 0, 0.02, 0.2, and 2 nematodes/g soil. Plants were grown in a greenhouse for 60 days. Root and plant weights were unaffected but plant height declined only at inoculum level of 2 nematodes/g soil. At the highest initial population density (2 nematodes/g soil), plant height of tomato cv. Poseidon was reduced by 24%. Tomato cv. Hoyong produced the most nematodes with 7.0 nematodes/g soil and the least was tomato cv. Miniheuksu with 2.2 nematodes/g soil.
Keywords
Damage threshold; Helicotylenchus dihystera; Lycopersicon esculentum; Pf/Pi; tomato;
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