此外，自交系的种质基础和选育方法要有创新，要和光合生理等性状改良综合起来，才是冀东夏玉米育种的必由之路。
Moreover , it is important and essential to match with the other traits improvements like photosynthetic rate , This is the only way for the creation of maize germplasm and breeding method of East Hebei summer maize hybrid breeding .
东夏