THE INFLUENCE OF PRATYLENCHUS-PENETRANS AND TEMPERATURE ON BLACK ROOT-ROT OF STRAWBERRY BY BINUCLEATE RHIZOCTONIA SPP
THE INFLUENCE OF PRATYLENCHUS-PENETRANS AND TEMPERATURE ON BLACK ROOT-ROT OF STRAWBERRY BY BINUCLEATE RHIZOCTONIA SPP
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DOI：
10.1094/pd-73-0107
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发表时间：
1989-02-01
期刊：
影响因子：
4.5
通讯作者：
MARTIN, SB
中科院分区：
文献类型：
--
作者：
LAMONDIA, JA;MARTIN, SB
草莓植株（品种Honeoye）在双核丝核菌侵染的土壤中生长时表现出黑根腐病的特征症状。（R.草莓属（fragariae）的A、G、I三个吻合群（AG）。在10 ℃和24 ℃下，以每立方厘米土壤170、90和17条线虫的比率向土壤中加入单菌培养的病斑线虫，短体线虫，增加了丝核菌根腐病的严重性。较高的线虫水平更有效地增加由这些真菌引起的根腐病比较低的水平。这两种病原体都降低了饲养根的长度。在两种病原体存在下，24 ℃下的根腐病高于10 ℃。双核丝核菌AG-1在10 ℃时比AG-A或AG-G致病力更强，而AG-G在24 ℃时比其他吻合组引起更多的病害。
Strawberry plants (cultivar Honeoye) exhibited symptoms characteristic of black root rot when grown in soil infested with binucleate Rhizoctonia spp. (R. fragariae) anastomosis groups (AG) A, G, and I. Monoxenically cultured lesion nematodes, Pratylenchus penetrans, added to soil at rates of 170, 90, and 17 nematodes per cubic centimeter of soil increased the severity of Rhizoctonia root rot at both 10 and 24 C. Higher nematode levels were more effective in increasing root rot caused by these fungi than were lower levels. Feeder root length was reduced by both pathogens. Root rot in the presence of both pathogens was higher at 24 than 10 C. Binucleate Rhizoctonia AG-1 was more virulent than AG-A or AG-G at 10 C, whereas AG-G caused more disease at 24 C than did the other anastomosis groups.