蓝拉小麦是西北植物研究所从普通小麦与长穗偃麦草的杂交后代中选出的一个异代换系。蓝粒小麦植株形态象普通小麦,但种子颜色与众不同,显示深蓝色,其蓝色色素位于种子的糊粉层。据国外研究,长穗偃麦草的4E染色体上载有蓝色胚乳基因(德沃拉克等,1972),蓝粒小麦就是由长穗偃麦草的一对4E染色体代换了小麦的一对4D染色体所形成的小偃麦异代换系。国内外著名的小麦育种遗传学家、染色体专家李振声研究员,近年来在所从事的蓝粒小麦胚乳蓝色色素遗传规律及其细胞 Blue Blue Wheat is an alien substitution line selected by the Northwest Institute of Botany from the cross between offspring of common wheat and long-tailed Echinochloa grass. The blue-grained wheat plants resemble common wheat, but the seeds are distinctive in color, showing dark blue with the blue pigment in the aleurone layer of the seed. According to foreign studies, the blue endosperm gene is carried on chromosome 4E of Erigeroni elongatum (Devolak et al., 1972). Blue wheat is a pair of 4D chromosomes of wheat replaced by a pair of 4E chromosomes of Erigeron elongatus The formation of small alien substitution lines. Famous domestic and foreign wheat breeding geneticist, chromosome experts Zhen-Sheng Li researcher, in recent years engaged in blue -grain wheat endosperm blue pigment genetic rules and cells