The Occurrence of Rhizoctonia Seedling Blight of Lily in Taiwan
Other Title
百合苗枯病之發生
Journal
植物病理學會刊
Journal Volume
5
Journal Issue
2
Pages
80-84
Date Issued
1996-06
Author(s)
Abstract
In spring of 1992, a seedling blight or stump rot was observed on oriental lily. Lilium oriental hybrid ＂Star Gazer, grown in central Taiwan. Reddish brown irregular lesions frequently developed on the emerging crowns in contact with the soil surface. The stem under soil line was often attacked and tan to reddish brown discoloration or sunken lesions appeared. Rhizoctonia solani anastomosis group (AG) 1, 3, 4, and other Rhizoctonia-like fungi were isolated from these diseased plants. Inoculation of intact oriental lily plants with artificially infested soil by the isolates of R. solani produced lesions similar to those observed in the field. Similar isolates of R solani were recovered from inoculated plants. This is the first report of association of R. solani with seedling blight or stump rot of lily in Taiwan.
1992年春天，在本省中部地區百合栽培田首次發現葵百合(Star Gazer)突出土壤表面之幼苗葉片呈褐化皺縮捲曲，未傷及芽體時，猶可正常生長，若受害葉片乾腐並包住頂芽，則造成矮化或抽莖不良。在高濕度下，受害部位之組織易呈黑色軟腐狀。由后里、埔里及清境地區採集及分離罹病植株之根、莖及葉片受害部，共得立枯絲核菌及其類似菌39個菌株，其中多核菌株有34株，其餘屬雙核菌株。多核菌株經菌絲融合測定結果，2株屬Rhizoctonia solani AG-1 (菌絲融合群第一群)、4株屬第三群、19株屬第四群，而9個菌株未能歸群。以盆栽方式測定不同菌絲融合群菌株之病原性，結果顯示致病力之強弱依序爲第四群，第三群及第一群菌株，而雙核菌株不具病原性。立枯絲核菌引起之百合苗枯病爲本省之新病害。
Subjects
Lily
seedling blight
stump rot
rhizoctonia solani kühn
百合
苗枯病
立枯絲核菌
Publisher
中華民國植物病理學會
Type
journal article