Abstract
The distribution of tomato plants infected by Passalora fulva, causal agent of leaf mold, was analyzed by using Taylor’s model and Iwao’s model to assess the patterns of spatial distribution within the greenhouses. In Taylor’s model, the sample variance (s 2) of diseased plants newly recognized at each observation increased only slightly with mean density (m). In Iwao’s model, the mean crowding (m*) of newly recognized diseased plants at each observation increased with m of diseased plants. The statistical analysis in this study suggests that new infections in greenhouses observed during this investigation tended to cluster around a diseased plant and that secondary infections occurred as independent cluster points.
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References
Ali A, Gu WD, Lobinske RJ (1998) Spatial distribution of chironomid larvae (Diptera: chironomidae) in two central florida lakes. Environ Entomol 27:941–948
Bliss CI (1941) Statistical problems in estimating populations of Japanese beetle larvae. J Econ Entomol 34:221–232
Enya J, Ikeda K, Takeuchi T, Horikoshi N, Higashi T, Sakai T, Iida Y, Nishi K, Kubota M (2009) The first occurrence of leaf mold of tomato caused by races 4.9 and 4.9.11 of Passalora fulva (syn. Fulvia fulva) in Japan. J Gen Plant Pathol 75:76–79
Iida Y, Iwadate Y, Kubota M, Terami F (2010) Occurrence of a new race 2.9 of leaf mold of tomato in Japan. J Gen Plant Pathol 76:84–86
Iwao S (1968) A new regression method for analyzing the aggregation pattern in animal populations. Res Popul Ecol 10:1–20
Jones JB, Jones JP (1991) Leaf mold. In: Jones JB, Jones JP, Stall RE, Zitter TA (eds) Compendium of tomato diseases. APS Press, St Paul, p 18
Kawaguchi A, Tanina K, Inoue K (2013) Spatiotemporal distribution of tomato plants naturally infected with bacterial canker in greenhouses. J Gen Plant Pathol 79:46–50
Kishi K (1962) Studies on the physiological specialization of Cladosporium fulvum cooke (in Japanese with English summary). Ann Phytopath Soc Japan 27:189–196
Lloyd M (1967) Mean crowding. J Anim Ecol 36:1–30
Madden LV, Hughes G (1995) Plant disease incidence: distributions, heterogeneity, and temporal analysis. Annu Rev Phytopathol 33:529–564
Mollet JA, Trumble JT, Sevacherian V (1984) Comparison of dispersion and regression indices for Tetranychus cinnabarinus (Boisduval) (Acari: tetranychidae) populations in cotton. Environ Entomol 13:1511–1514
Ohsaki M, Tomimura K, Urano S, Yoshida M, Nakajima T (2009) Spatiotemporal distribution of diseased heads with fusarium head blight in naturally infested wheat fields (in Japanese with English summary). Jpn J Phytopathol 75:307–313
Ozaki K, Shirakawa T (1996) Pathogenic races of Fulvia fulva in iwate prefecture (in Japanese with English summary). Ann Rept Plant Prot North Jpn 47:62–64
Satou M, Shinozaki T, Nishi K, Kubota M (2005) Leaf mold of tomato caused by races 4 and 4.11 of Passalora fulva in Japan. J Gen Plant Pathol 71:436–437
Soemargono A, Ibrahim Y, Ibrahim R, Osman MS (2008) Spatial distribution of the asian citrus psyllid, Diaphorina citri Kuwayama (Homoptera: psyllidae) on citrus and orange jasmine. J Biosci 19:9–19
Taylor LR (1961) Aggregation, variance and the mean. Nature 189:732–735
Taylor LR, Woiwod IP, Perry JN (1978) The density-dependence of spatial behavior and the parity of randomness. J Anim Ecol 47:383–406
Yamada K, Abiko K (2002) Race composition of Fulvia fulva in Japan during 1997–1998 (in Japanese with English summary). Jpn J Phytopathol 68:36–38
Yamamura K (2000) Colony expansion model for describing the spatial distribution of populations. Popul Ecol 42:161–169
Acknowledgments
The authors are grateful to Dr. K. Ishiguro (NARO Tohoku Agricultural Research Center, Iwate, Japan), Dr. H. Tanaka (Research Institute of Environment, Agriculture and Fisheries, Osaka Prefecture, Osaka, Japan) and Dr. K. Yamamura (National Institute of Agro-Environment Sciences, Ibaraki, Japan) who gave us much useful advice.
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Figure S1: Map of greenhouse A in 2009. A black square shows a diseased tomato plant with leaf mold, and a white square shows a healthy tomato plant. a Total diseased plants at each observation. b Diseased plants newly recognized at each observation.
Table S1: The outline of commercial greenhouses investigated.
Table S2: Value of m, m*and s 2 for diseased tomato plants caused by Passalora fulva in commercial greenhouses.
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Kawaguchi, A., Suenaga-Kanetani, H. Spatiotemporal distribution of tomato plants naturally infected with leaf mold in commercial greenhouses. J Gen Plant Pathol 80, 430–434 (2014). https://doi.org/10.1007/s10327-014-0539-x
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DOI: https://doi.org/10.1007/s10327-014-0539-x