Five “Zhong series” varieties, Zhong1, Zhong2, Zhong3, Zhong4, Zhong5, of octoploid Trielytrigia have been bred by hybridization of common wheat with Elytrigia intermedium. Many geneticists and breeders have considered these varieties as good germplasm resources possessing disease resistance as well as high seed protein quality. The breeding procedure and pedigree, morphology, biology, disease resistance, quality traits and genome constitutions of these materials have been investigated. By utilizing the "Zhong series" genetic materials, a number of commercial wheat varieties were produced. They included Long Wheat 10 with resistance to BYDV, Linkang 1, Black grained wheat 76 with high seed protein quality, Jinyan 1 with salt tolerance, Zaoyou 504 with high quality and early maturity, Gaoyou 503 with high yield and quality, Shanxi Wheat 8007 with high quality and immunity to stripe rust, Gui Wheat 3 with early maturity and resistance to dampness, Long wheat 9 with resistance to leaf rust, Xiaoyan 33 and Jinchun 13 with high yield, good quality and disease resistance.
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