野生二粒小麦（资源代号：ＡＳ８４６）叶鞘被有茸毛，穗轴脆易断；对小麦白粉病、条锈病免疫。普通小麦与其杂交和回交，Ｆ１回交结实率是杂交结实率的３～４倍；野生二粒小麦性状在Ｆ１呈显性，ＢＣ１开始分离；Ｆ３形态指示性状出现中间类型，一直到高代还保留这种类型。形态指示性状与抗白粉性连锁不紧密，不能作为抗白粉性的选择标志。在普通小麦和野生二粒小麦的单交组合里，通过定向选择，选育出了农艺性状好，抗白粉性基本稳定的株系Ｎ９１３４－２－１１－１ Wild two grain wheat (resource code: AS846) leaf sheaths are hairy, brittle fracture of corncob; wheat powdery mildew, stripe rust immunity. The common wheat was crossed and backcrossed, the rate of F1 backcrossing was 3 ~ 4 times higher than that of hybrids; the characters of wild double-grain wheat were dominant in F1 and BC1 began to segregate; the intermediate form of F3 morphological traits appeared until the high generation Also keep this type. Morphological indications and anti-white powder chain is not close, not as a marker of anti-white powder sex. In the single crosses of common wheat and wild double-grain wheat, the lines N9134-2-11-1 with good agronomic characters and basically stable white powder resistance were bred by directional selection