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Infection of Daughter Plants by Fusarium oxysporum f. sp. fragariae through Runner Propagation of Strawberry  

Nam, Myeong-Hyeon (Nonsan Strawberry Experiment Station, Chungcheongnam-do Agricultural Research & Extension Services)
Kang, Yang-Jae (Department of Plant Science, Seoul National University)
Lee, In-Ha (Nonsan Strawberry Experiment Station, Chungcheongnam-do Agricultural Research & Extension Services)
Kim, Hong-Gi (Department of Applied Biology, Chungnam National University)
Chun, Chang-Hoo (Department of Plant Science, Seoul National University)
Publication Information
Horticultural Science & Technology / v.29, no.3, 2011 , pp. 273-277 More about this Journal
Abstract
Fusarium oxysporum f. sp. fragariae (Fof), the causal agent of crown and root rot in strawberry, is the most serious soilborne disease of nursery plants in Korea. The possibility of infection by Fof through runner propagation from infected mother plants of strawberry cv. 'Kumhyang' was assessed in stolons and daughter plants hanging from raised beds. The number of daughter plants from an infected mother plant in plastic house and photosynthetic photon flux (PPF) system, 280 ${\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$ was 2.7 and 3.8 plants after 58 days, respectively. However, healthy mother plants produced 6.5 and 8.4 daughter plants, respectively. The pathogen was detected in the uppermost portion of the stolon after 58 days, but was not detected further down the stolon. After 90 days, it was detected in all portions of the stolon between mother and $1^{st}$ daughter plant and in 60% of all $1^{st}$ daughter plants. The pathogen was not detected in the corresponding portions of the non-infected controls. These results show that infected mother plants can transmit Fof to their daughter plants without passing through the soil and $1^{st}$ daughter was used as mother plant in PPF system for propagating healthy plants.
Keywords
mother plant; photosynthetic photon flux (PPF) system;
Citations & Related Records
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