1.用种子直感现象黄粒自交系与白粒自交系杂交。黄粒是显性,白粒是隐性,白粒自交系作母本时,杂交种应该全部是黄粒,授了黄粒自交系的花粉,白粒当代变黄。如果母本自交系是黄粒,授了白粒自交系花粉,黄粒不变。在制种田内检查父本果穗,如果父本接受到很多黄粒玉米自交系的花粉,白粒当代变黄。 1. Seeds with the phenomenon of direct yellow inbred inbred lines and white grain inbreds. Yellow grains are dominant, white grains are recessive, white grain inbred lines as the female parent, the hybrids should be all yellow, granted yellow inbred lines of pollen, white grains turn yellow. If the female parent inbred line is yellow, awarded the white grain inbred pollen, yellow unchanged. In the farming system to check the male ear, if the male parent to receive a lot of yellow corn inbred pollen, white grain contemporary yellow.