发展杂交米稻,首先得有杂交水稻的种子。生产上以不育系作母本,恢复系作父本,按一定的行数比例相间种植,让恢复系的花粉落到不育系的柱头上受精结实,使不育系结出的种子恢复可育性能,杂种能自交结实并有杂交丰产优势,以供大田生产应用。这一制备杂交水稻种子的过程称为“制种”。由于杂交优 To develop hybrid rice, we must first have the seeds of hybrid rice. Sterile lines in the production of the female parent, restore the parent line, according to a certain number of rows in the ratio of planting, so that restore the Department of pollen fell on the stigma sterile line fertilization, the sterile seedling node recovery Fertility, hybrids can be self-fertility and hybrid yield advantage for field production and application. This process of preparing hybrid rice seeds is called “seed production.” Because of hybridization