Assessment of partial resistance to Pyricularia oryzae in six rice cultivars
Assessment of partial resistance to Pyricularia oryzae in six rice cultivars
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6个水稻品种对稻瘟病菌的部分抗性评价
DOI：
10.1111/j.1365-3059.1986.tb02021.x
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发表时间：
1986
期刊：
影响因子：
2.7
通讯作者：
J. Bonman
中科院分区：
文献类型：
--
作者：
W. Yeh;J. Bonman
通过温室试验和高地圃试验，对6个水稻品种的稻瘟病部分抗性进行了鉴定。IR36。密阳30号和密阳42号在农民田间多年来表现出相对较少的病害，它们的相对病害效率较低，病斑较小，产孢能力较低。第264章.潜育期是部分抗性中最不重要的组成部分。以病情发展曲线下面积作为衡量苗圃内相对病情发展的指标，IR 36和密阳42上病情发展较轻，密阳30上病情发展居中。相比之下，三个感病品种表现出快速增加的疾病。部分抗性可能与某些品种更持久的抗瘟性有关。
The partial resistance to blast of six rice cultivars was assessed in greenhouse experiments and in an upland nursery experiment. IR36. Milyang30 and Milyang42, which have shown relatively little disease in farmers' fields for several years, had lower relative disease efficiency and smaller lesions with lower sporulation capacity than did IR50. Milyang 57 and Suweon 264. Latent period was the least important component of partial resistance. Using the area under disease progress curves as a measure of relative disease progress in the nursery, disease development on IR36 and Milyang 42 was slight and on Milyang 30 intermediate. By comparison, the three susceptible cultivars showed rapid increases in disease. Partial resistance may be associated with more durable blast resistance in certain cultivars.