半配合生殖是无融合生殖的一种。减数或非减数雄性配子和雌性配子不经过核配而共同参与胚的形成,可以由此造成包括父本和母本组织的嵌合体。棉花的半配合现象,在七十年代才被正式确认,我国至今对这方面的研究报道尚少。自1978年,我们开始了棉花半配生殖及其应用研究,结果表明:利用棉花半配生殖特性,可获得任一棉花品系或杂种后代的单倍体,为加速棉花育种开辟了一个新途径。一、材料与方法本试验采用从美国直接引进的具有半配生殖特性的海岛棉品系,分种于温室和自然条件下,并进行自交和杂交以及后代的观察研究。二、结果分析 Semi-complementary reproduction is a form of apomixis. Minimal or non-subtractive male gametes and female gametes participate in the formation of embryos without being dithered, which can result in chimera including both paternal and maternal tissues. The phenomenon of semi-cooperation of cotton was formally confirmed in the seventies. So far, there are still few reports on this aspect in our country. Since 1978, we began to study the semi-parthenogenesis and its application in cotton. The results showed that using the semi-parthenogenesis characteristics of cotton, we could obtain the haploid of any cotton or hybrid progeny, which opened up a new way for accelerating cotton breeding. I. Materials and Methods In this experiment, we used the island cotton cultivars with semi-mating reproductive properties introduced directly from the United States. They were planted in greenhouse and under natural conditions, and were self-crossed, crossed and observed. Second, the result analysis