1.辽宁省沙地治理与利用研究所,辽宁 阜新,123000
2.黑龙江八一农垦大学,黑龙江 大庆 163319
韩宁(1994- ),男,硕士,主要从事花生病理与栽培研究,E-mail: hanning202106@163.com
史普想(1979- ),研究员,主要从事花生栽培研究和推广,E-mail: spx_104@126.com
收稿:2025-09-15,
纸质出版:2026-10-25
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韩宁,庄轹文,吕金昊等.辽宁省花生冠腐病病原菌的分离鉴定及其生物学特性研究[J].中国油料作物学报,2026,48(05):201-208.
HAN Ning,ZHUANG Li-wen,LYV Jin-hao,et al.The pathogen isolation, identification and Physiological properties of peanut crown rot in Liaoning Province[J].Chinese Journal of Oil Crop Sciences,2026,48(05):201-208.
韩宁,庄轹文,吕金昊等.辽宁省花生冠腐病病原菌的分离鉴定及其生物学特性研究[J].中国油料作物学报,2026,48(05):201-208. DOI: 10.19802/j.issn.1007-9084.2025202.
HAN Ning,ZHUANG Li-wen,LYV Jin-hao,et al.The pathogen isolation, identification and Physiological properties of peanut crown rot in Liaoning Province[J].Chinese Journal of Oil Crop Sciences,2026,48(05):201-208. DOI: 10.19802/j.issn.1007-9084.2025202.
本研究旨在明确辽宁省花生冠腐病的病原,通过组织分离法获得病原菌分离物,并基于科赫氏法则验证其致病性。对病原菌的菌落形态、菌丝特征及孢子结构进行了观察,结果显示该菌在培养基上菌落呈圆形、边缘规整,菌丝呈白色绒毛状,具隔膜及分支,分生孢子为黑色球形。进一步对病原菌的
CAL
和
Tub2
基因片段进行扩增与测序,通过多基因序列联合构建系统发育树,最终将引起该地区花生冠腐病的病原鉴定为
Aspergillus niger
。生物学特性研究表明,该菌菌丝在35℃下生长最佳,最适pH为5,最适碳源和氮源分别为乳糖和胰蛋白胨,其致死温度为60℃。
The purpose of this study was to identify the pathogens of peanut crown rot in Liaoning Province. The pathogens were isolated by tissue isolation method and verified by Koch 's rule. Then the colony
mycelium and spore morphology of the pathogen were observed. The results showed that the strain exhibited circular colony growth with neat edges
white fluffy mycelia featuring septa and branching
and black spherical conidia. Based on multigene phylogenetic analysis of
ITS
CAL
and
Tub2
partial sequences
the pathogen causing peanut crown rot in Liaoning Province was identified as “
Aspergillus niger
”. In addition
the Physiological properties of the pathogen were tested. The results showed that the optimum growth temperature of the pathogen was 35°C
the optimum growth pH was 5
the optimum growth carbon and nitrogen sources were lactose and tryptone
and the lethal temperature was 60°C.
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