棉花有性杂交,是两个亲本性细胞的结合。杂交后代的优势表现在产量高、成熟早、品质好、抗逆性强;所以利用杂种优势,能增加产量;并可在后代的变异中,通过增育与选择、创造新品种。杂种优势利用与杂交育种相结合是棉花育种工作中多快好省的新方法。棉花的有性杂交,就是将某一个棉花品种(或种)的花粉授到另一个品种(或种)的柱头上,进行受精,产生杂种。一棉花花的构造与开花习性棉花的花,由明显的五个部份 Sexual cotton hybrids are the combination of two parental cells. The advantages of hybrid progeny are high yield, early maturity, good quality and strong resistance; therefore, the use of heterosis can increase the yield; and in the offspring variation, through the growth and selection, to create new varieties. Combining heterosis with crossbreeding is a new way to make cotton breeding work faster and happier. Sexual hybridization of cotton is the pollen of one cotton variety (or species) to the stigma of another variety (or species), for fertilization, to produce hybrids. Constructed with flowering cotton flowers, a cotton flower consists of five distinct parts