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作者	单位
王美芳，雷振生，吴政卿，徐福新，常阳，周正富，晁岳恩，刘加平，李巍	(河南省农业科学院小麦研究所，河南郑州 450002)

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中文摘要:

为给黄淮南片冬麦区小麦育种提供种质信息，将1 328份CIMMYT国际面包小麦观察圃(IBWSN)的种质于2011-2015年度种植于黄淮南片冬麦区的新乡，调查了42^nd ～46^th国际面包小麦观察圃种质的主要农艺性状和抗病性，分析了45^th国际面包小麦观察圃种质的品质表现及优质亚基基因状况。结果表明，CIMMYT国际面包小麦观察圃种质均表现为春性，综合农艺性状差；株高不低于80 cm，大多数（84.6%）在90～110 cm之间；千粒重高于45.0 g和50.0 g的比例分别为28.4%和10.0%。CIMMYT国际面包小麦观察圃种质的花期与黄淮南片冬麦区品种一致，多数小麦种质白粉病发生比较轻。45^th国际面包小麦观察圃种质的湿面筋含量为23.6%～41.6%，其中，13.2%的小麦种质湿面筋含量大于35.0%，40.8%的小麦种质湿面筋指数不低于80.0%；49.7%的小麦种质携带Dx5+Dy10基因，3.0%的小麦种质携带Bx7^OE 基因；有 10个小麦种质含有优质5+10亚基及7超量表达亚基，可作为优质亲本改良黄淮南片冬麦区高产品种。

英文摘要:

To provide useful information for wheat breeding in the south of Huang-Huai winter wheat region,1 328 CIMMYT IBWSN wheat germplasm were planted in Xinxiang during 2011 to 2015, and main agronomic traits and disease resistance of the 42^nd to 46^thIBWSN wheat germplasm were investigated, and protein parameters and high quality subunit gene of the 45^thwheat germplasm were analyzed. The result showed that, all the CIMMYT IBWSN wheat germplasm performed spring habit and poor integrated agronomic traits; the plant height of 84.6% wheat germplasm was in a range of 90 to 110 cm, and there was no material less than 80 cm in height; the thousand kernel weight of 28.4% and 10.0% wheat germplasm was more than 45.0 g and 50.0 g, respectively. The flowering period of CIMMYT IBWSN wheat germplasm was consistent with the wheat germplasm in the south of Huang-Huai winter wheat region, and most wheat germplasm appeared light powdery mildew. The 45^thIBWSN wheat germplasm showed the wet gluten content with a range of 23.6 to 41.6%, 13.2% of which showed the wet gluten content higher than 35.0%, and 40.8% of which showed the wet gluten index no less than 80.0%; 49.7% of the tested germplasm carried Dx5+Dy10 genes and 3.0% carried Bx7^OE gene. Ten wheat germplasm containing high quality 5+10 subunits and 7^OE subunit were selected, which can be used as excellent crossing parents to improve wheat quality for high yield varieties in Huang-Huai winter wheat region.

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