Resistance of daylily cultivars to the daylily rust pathogen, Puccinia hemerocallidis
Resistance of daylily cultivars to the daylily rust pathogen, Puccinia hemerocallidis
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DOI：
10.21273/hortsci.38.6.1137
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发表时间：
2003-10-01
期刊：
影响因子：
1.9
通讯作者：
Buck, JW
中科院分区：
文献类型：
--
作者：
Mueller, DS;Williams-Woodward, JL;Buck, JW
黄花菜(HEmerocallis sp.)历来被认为是无公害的。然而，由叶锈菌引起的一种锈病。自2000年以来已经成为美国一个日益严重的问题。本研究旨在评价黄花菜品种对黄花菜锈病的抗性。从84个接种品种的温室评价中，14个(17%)被归类为抗病，13个(15%)被归类为中抗，22个(26%)被归类为中感，35个(42%)被归类为完全感病。有几个品种表现出很高的抗性水平，育种家可以利用这些品种来培育对黄花菜锈病抗性提高的品种。有关品种抗性和敏感性的信息也将帮助商业种植者和园丁选择有潜力大幅减少锈病破坏性爆发的品种。
Daylilies (Hemerocallis sp.) have traditionally been considered to be pest-free. However, a rust disease caused by Puccinia hemerocallidis Thum. has become an increasing problem in the United States since 2000. The objective of this study was to evaluate daylily cultivars for resistance to daylily rust. From a greenhouse evaluation of 84 inoculated cultivars, 14 (17%) were classified as resistant; 13 (15%) were classified as moderately resistant; 22 (26%) were classified as moderately susceptible; and 35 (42%) were classified as fully susceptible. Several cultivars displayed very high levels of resistance and may be utilized by breeders to develop cultivars with improved resistance to daylily rust. Information about the resistance and susceptibility of cultivars also will help commercial growers and gardeners select cultivars that have the potential to dramatically reduce damaging outbreaks of rust.