南方根瘤線蟲與西瓜蔓割病菌複合感染西瓜根系對病害發生之影響

Other Title
Interaction between Meloidogyne incognita and Fusarium oxysporum f.sp. niveum in watermelon roots
Journal
植物病理學會刊
Journal Volume
7
Journal Issue
4
Pages
201-204
Date Issued
1998-12
Date
1998-12
Author(s)
顏志恒
黃振文
林俊義
陳殿義
蔡東纂
Yen, J. H.
Huang, J. W.
Lin, C. Y.
Chen, D. Y.
Tsay, T. T.
DOI
URI
Abstract
富寶二號西瓜品種在接種1000隻以上的南方根瘤線蟲二齡幼蟲經45天後，其根瘤指數維持在2.0以上，而接種500隻二齡幼蟲其根瘤指數則為1.8。在接種西瓜蔓割病菌試驗中，接種10^3及10^4(propagules/g dry soil)菌量時，西瓜幼苗罹患蔓割病的百分率分別為80%及100 %，而接種10^2(propagules/g dry soil)菌量時，西瓜幼苗罹患蔓割病的百分率為40%。以500隻南方根瘤線蟲二齡幼蟲與10^2 (propagules/g dry soil)西瓜蔓割病菌菌量為接種濃度進行交互感染試驗，結果顯示，先接種南方根瘤線蟲後再接種西瓜蔓割病菌、先接種西瓜蔓割病菌後再接種南方根瘤線蟲、及南方根瘤線蟲和西瓜蔓割病菌同時接種等線蟲和真菌交互作用處理，富寶二號西瓜品種蔓割病發病程度皆比單獨接種真菌處理者為高，顯示植物寄生性線蟲與病原真菌複合感染胡蘆科植物時，確有加重病害發生之趨勢。 The interaction between Meloidogyne incognita (MI) and Fusarium oxysporum f. sp. niveum (FON) in watermelon roots has been conducted in the greenhouse. Root- knot index of watermelon (cv. Fu-Bo No. 2) were 2.8, 2.6, and 1.8 respectively 45 days after inoculation with 5000, 1000, and 500 second juveniles (per pot) of Meloidogyne incognita. Disease incidence of watermelon (cv. Fu-Bo No.2) Fusarium wilt was 40 % after inoculation with 10^2 propagules/g dry soil of FON for 45 days. Therefore, watermelon seedlings inoculated with MI at 500 second juveniles and FON at 102 propagules/g dry soil were used to study the phenomena of disease complex. Disease incidence of watermelon Fusarium wilt in three treatments including watermelon seedlings (a) inoculated with root-knot nematode for two weeks, and then inoculated with FON; (b) inoculated with FON for two weeks, and then inoculated with the nematodes; (c) inoculated with nematode and FON simultaneously was more severe than the seedings inoculated with FON only. The results indicated that Meloidogyne incognita was able to increase the disease incidence of watermelon Fusarium wilt.
Subjects
南方根瘤線蟲
西瓜蔓割病菌
複合感染
Meloidogyne incognita
Fusarium oxysporum f. sp. niveum
disease complex
Publisher
中華民國植物病理學會
Type
journal article
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