论文部分内容阅读
从2004年12月至翌年3月,定期从田间麦冬采集有炭疽病症状和无炭疽病症的叶片,进行洗涤收集炭疽菌分生孢子,测定其存活力,并分离测定样本中是否有炭疽菌存在。结果表明,田间病叶上的分生孢子具有一定存活力,病叶病斑中的越冬病菌菌丝仍具有生活力;无症状样本中能分离到炭疽病菌。这表明川麦冬炭疽病菌具有潜伏侵染特性,能以田间病株上的分生孢子和病组织中的菌丝越冬,作为初侵染源。
From December 2004 to March of the following year, leaves of anthropiosis and non-anthrax disease were collected regularly from the field of Radix Ophiopogon japonicus, washed and collected for the conidia of the anthrax, and the viability was measured and the presence or absence of anthrax exist. The results showed that the conidia on the leaves of the field had some viability. The mycelium of overwintering pathogen in diseased leaf spot still had viability; anthracnose could be isolated from asymptomatic samples. This indicates that Radix Chuanmai Rhizoctonia has latent infection characteristics and can overwinter as conidia in diseased plants and hyphae in diseased tissues as primary infection source.