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小麦纹枯病是影响我国小麦生产的主要土传病害。培育、推广抗纹枯病小麦品种是防治该病害最经济、有效的方法。普通小麦中抗源匮乏,严重制约抗纹枯病小麦育种的进展。为发掘人工合成小麦中纹枯病新抗源,本试验通过人工接种、抗病鉴定方法,在江苏省和北京市两地,对来源于国际玉米小麦改良中心的102份人工合成六倍体小麦品系,进行4年的纹枯病抗性的多环境鉴定。结果表明,人工合成小麦品系间对小麦纹枯病抗性存在差异,在其中进行小麦纹枯病抗源的筛选是有效的。与普通小麦品种扬麦158、扬麦12相比,这102份人工合成小麦的大部分对纹枯病的抗性表现抗或中抗水平,其中一些品系在多年多点鉴定中表现稳定抗性,如ZC93、ZC111、ZC112、ZC123、ZC172、ZC206和ZC221表现为抗病水平,病情指数低于目前最好的普通小麦抗源,可作为抗纹枯病小麦育种的新抗源。
Wheat sheath blight is the main soil-borne disease affecting wheat production in China. Cultivating and popularizing the wheat varieties resistant to Sheath Blight is the most economical and effective way to control this disease. The lack of resistance in common wheat severely restricts the progress of wheat breeding against the sheath blight. In order to explore the new synthetic source of resistance to sheath blight in wheat, this experiment adopted artificial inoculation and disease resistance identification methods. In this study, 102 artificial sugarcane derived from the International Corn and Wheat Improvement Center Lines, multi-environment identification of resistance to sheath blight of 4 years. The results showed that there were differences in the resistance to wheat sheath blight among the synthetic wheat cultivars. Screening for the resistance to wheat sheath blight was effective. Compared with the common wheat cultivars Yangmai 158 and Yangmai 12, most of the 102 synthetic wheat cultivars exhibited resistance to resistance or resistance to sheath blight, some of which showed stable resistance in multi-year multi-point identification Such as ZC93, ZC111, ZC112, ZC123, ZC172, ZC206 and ZC221 showed disease resistance and the disease index was lower than that of the best common wheat source.