Sources of resistance to septoria tritici blotch and implications for wheat breeding
Sources of resistance to septoria tritici blotch and implications for wheat breeding
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DOI：
10.1111/j.1365-3059.2004.01052.x
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发表时间：
2004-08-01
期刊：
影响因子：
2.7
通讯作者：
Brown, JKM
中科院分区：
文献类型：
--
作者：
Chartrain, L;Brading, PA;Brown, JKM
对 24 个小麦品种和育种系进行了筛选，以确定其对由 12 个禾谷球腔菌分离株引起的小麦斑枯病 (STB) 的分离株特异性抗性。鉴定出可用于小麦育种的新菌株特异性抗性。数十年来世界育种计划中使用的 STB 抗性的主要来源，例如 Kavkaz-K4500、Veranopolis、Catbird 和 TE9111，具有多种分离株特异性抗性。这表明在一个品种中“金字塔化”多个抗性基因可能是小麦 STB 抗性育种的有效且持久的策略。包括 Arina、Milan 和 Senat 在内的几个品种对大多数测试菌株以及菌株特异性抗性均具有高水平的部分抗性。对分离 IPO323 的耐药性很常见，除了测试的主要耐药源之一外，其他所有耐药源都存在这种耐药性。这表明对 IPO323 的抗性可能是田间品种对 STB 抗性的一个指标。
Twenty-four wheat cultivars and breeding lines were screened for isolate-specific resistance to septoria tritici blotch (STB) caused by 12 isolates of Mycosphaerella graminicola. New isolate-specific resistances that could be used in wheat breeding were identified. Major sources of resistance to STB used in world breeding programmes for decades, such as Kavkaz-K4500, Veranopolis, Catbird and TE9111, have several isolate-specific resistances. This suggests that 'pyramiding' several resistance genes in one cultivar may be an effective and durable strategy for breeding for resistance to STB in wheat. Several cultivars, including Arina, Milan and Senat, had high levels of partial resistance to most isolates tested as well as isolate-specific resistances. Resistance to isolate IPO323 was common, present in all but one of the major sources of resistance tested. This suggests that resistance to IPO323 may be an indicator of varietal resistance to STB in the field.