International Journal of Agricultural Policy and Research
Vol.2(2), pp.055-060, February 2014
Article 13/ID/JPR132, 06 pages
Copyright © 2014 Author(s) retain the copyright of this article. Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 3.0 International License
Original Research Paper
Lesion spreading of ceratocystis canker on ‘Masui Dauphine’ fig trees
Accepted January 3rd 2014
Yuka Miwa*1, Akihiro Hosomi1 and Takaaki Ishii2
1Research Institute of Environment, Agriculture and Fisheries, Osaka Prefecture, Shakudo, Habikino 583-0862, Japan.
2Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, 1-5 Shimogamohangi-cho, Sakyou-ku, Kyoto 606-8522, Japan.
* Corresponding Author E-mail: Miwa(at)@mbox.kannousuiken-osaka.or.jp
Characteristics of lesion-spreading of ceratocystis canker diseases caused by Ceratocystis ficicola were investigated with shoot-cuttings and nursery stocks of fig (Ficus carica L.) tree. Wound inoculation of C. ficicola produced lesions on shoots and trunks of ‘Masui Dauphine’ fig. The lesion length in the longitudinal direction was greater than in the tangential direction. In shoot-cuttings and intact nursery stocks, no difference was found in longitudinal lesion length between apical and basal parts. No posture of shoot-cutting (upright, inversion, and horizontal) affected the lesion size or shape. Lesser lesion spreading was observed near buds. Deep wound inoculation produced lesions spreading on the branch cross-section. Greater lesion spreading was observed in the cambium and pith. Results showed that lengthwise spreading is a fundamental characteristic for ceratocystis canker lesion on fig trees. The spreading was unaffected by gravity or the physiological polarity of fig trees. However, the difference in cell shape and wood component tissues affected the lesion spreading rate of ceratocystis canker lesions in fig wood.
Key words: Ficus carica, ceratocystis canker, Lesion