Evaluation of Wild Dianthus Accessions for Resistance to Bacterial Wilt (Pseudomonas caryophylli)
Evaluation of Wild Dianthus Accessions for Resistance to Bacterial Wilt (Pseudomonas caryophylli)
复制标题
野生石竹种质抗青枯病（石竹假单胞菌）的评价
DOI：
10.2503/jjshs.68.974
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发表时间：
1999
影响因子：
--
通讯作者：
H. Ikeda
中科院分区：
文献类型：
--
作者：
T. Onozaki;Takashi Yamaguchi;M. Himeno;H. Ikeda
青枯病（Pseudomonas caryophylli）是日本康乃馨（Dianthus caryophyllus）最重要且最具破坏性的病害之一。它会导致温暖地区种植的康乃馨严重减产。几乎所有康乃馨品种都对青枯病敏感。因此，采用切根浸泡法筛选70份野生石竹材料的青枯病抗性，接种浓度为107 cfu（菌落形成单位）·ml-1。在 70 份石竹种质中观察到抗性差异很大。我们发现了两种高度抗性的野生物种，D. headatus ssp。 andrzejowskianus 和 D. henteri。这两个物种在整个实验过程中没有表现出疾病症状。此外，有 7 个种质被归类为抗性。使用 4 个分离株进行重新测试表明 D. headatus ssp。 andrzejowskianus 是抵抗力最强的物种。
Bacterial wilt (Pseudomonas caryophylli) is one of the most important and damaging diseases of carnations (Dianthus caryophyllus) in Japan. It causes serious crop losses in carnations grown in the warm districts. Almost all carnation cultivars are susceptible to bacterial wilt. Therefore, 70 wild Dianthus accessions were screened for resistance to bacterial wilt by using the cut-root soaking method with an inoculum concentration of 107 cfu (colony-forming units)·ml-1. Large differences in resistance were observed among 70 Dianthus accessions. We found two highly resistant wild species, D. capitatus ssp. andrzejowskianus and D. henteri. These 2 species showed no disease symptoms throughout the experiment. Moreover, 7 accessions were classified as resistant. Retesting by using 4 isolates showed that D. capitatus ssp. andrzejowskianus was the most resistant species.