Screening Hardy Chrysanthemums for Resistance to Fusarium oxysporum f. sp. chrysanthemi Race 2

寒帶菊花萎凋病(Fusarium oxysporum f. sp. chrysanthemi race 2)之抗病篩選

黃鴻章(Hung-Chang Huang) ； Henry H. Marshall ； Lynn M. Collicutt

《植物病理學會刊》 2卷2期 (1993/06) Pp. 103-105

https://doi.org/10.6649/PPB.199306_2(2).0007

摘要

用人工接種法測試24種寒帶菊花對Fusarium oxysporum f. sp. chrysanthemi生理小種二號所引起的萎凋病之抗病性。結果顯示十個商業品種中，Morden Fiesta, Morden Garnet，Susan Brandon，Morden Gaiety，Morden Delight與Morden Cameo等六個品種具高度抗病性，所有植株葉片於接種後32天仍無萎凋病徵或僅具極輕微之萎凋；其他四個品種，Morden Eldorado，Brown，Morden Canary及Morden Everest屬高度罹病性，所有植株均呈現嚴重萎凋或枯死；其餘14個品系中有八個品系(7618, 7751, 7773, 7517, 7764, 7510, 7731及 7924)屬於抗病類型。此研究結果顯示在加拿大西部平原防治寒帶菊花萎凋病最有效之方法是栽培抗病性品種。

關鍵字

菊花 ； 抗病性 ； 萎凋病

並列摘要

Twenty four entries of hardy chrysanthemum including 10 commercial cultivars and 14 experimental lines were screened for resistance to wilt caused by Fusarium oxysporum sp. chrysanthemi race 2 using an artificial inoculation technique. Among the 10 cultivars tested, Morden Fiesta, Morden Garnet, Susan Brandon, Morden Gaiety, Morden Delight and Morden Cameo were highly resistant to the disease, showing little or no wilt symptoms on leaves after inoculation for 32 days; whereas Morden Eldorado, Brown, Morden Canary and Morden Everest were susceptible to highly susceptible, showing severe wilting of leaves Eight of the 14 experimental lines,. 7618, 7751, 7773, 7517, 7764, 7510, 7731, and 7924 were also highly resistant to the disease. This study suggests that plant loss due to Fusarium oxsporum f. sp. chrysanthemi race 2 in Canadian prairie gardens could be avoided by growing disease resistant cultivars of hardy chrysanthemum.

並列關鍵字

hardy chrysanthemum ； resistance ； fusarium wilt ； Fusarium oysporum ； Chrysanthemum morilifolium