Difference between male and female gametes in transmitting gene controlling the blue aleurone trait in wheat

The character of blue-grain is a dominant genetic marker widely used in wheat genetics and breeding.Difference between male and female gametes in transmitting gene controlling the blue aleurone trait in wheat was determined in this study.Crosses between non-blue grain wheat varieties and blue-grain wheat varieties L and 03-chu-36 were carried to the F2 generation.And the F1 of waxy-grain wheat C75 and blue-grain wheat L as male or female parent was test-crossed with waxy-grain wheat C75,and Ft generation was produced.Then the grain color of F1,F2 of these crosses was investigated.F1 grain color of the crosses behaved medium blue or light blue.So blue grain is dominant.Grain color in F2 segregated into blue and non-blue not in a ratio of 3∶1,but in a ratio of 11∶9,the blue grain number almost matched to the red grain number,and blue grain can be divided into dark blue,medium blue and light blue.The result of test cross showed that the transmission rate was 100% and 20% respectively for male and female gametes containing blue grain gene.This transmission rate just explained the ratio of 11∶9 of blue grain number and red grain number in F2.The seeding of blue grain wheats was normal,showing the female gametes was normal and transmission rate was 100%.This corresponded to the results of the test cross.This paper also discussed the gene numbers controlling the blue grain.