用大麦×小麦属间杂种F_1的无性系与作轮回回交亲本的小麦回交,在回交三代一个株系中,获得自交可育异质体小麦。异质体植株表型似父本,与回交亲本“宁7840”相比,具生长优势,早熟,它们的体细胞染色体数2n=43,花粉母细胞在减数分裂中期I出现高频率的二价体和极少的单价体(每花粉母细胞中分別为21和0.32)。异质体小麦并具优良的农艺性状和高的育性,将可能成为一个新的小麦种质。在小麦改良中具有潜在的应用前景。 Inbred lines of barley × wheat interspecific hybrid F_1 were used to backcross the wheat with reciprocal parental line and backcrossed to one line of three generations to obtain selfing and fertile heterogeneous wheat. The heterozygous plant phenotype resembles the male parent, and has the advantage of growth and precociousness when compared with the backcross parent “Ning 7840”. Their somatic chromosome number is 2n = 43, pollen mother cells appear high frequency in metaphase I Bivalent and very few monovalent bodies (21 and 0.32 per pollen mother cell, respectively). Heterozygous wheat with excellent agronomic traits and high fertility will likely become a new wheat germplasm. Potential applications in wheat improvement.