早在1894年,Mell 报导了棉花种间杂交的杂种优势,其后的研究者指出,这个优势在棉花(陆地棉)进行种间杂交和种内杂交时能对成熟度、产量和纤维特性起促进作用。在印度,利用F_1代棉花杂种已经带来了皮棉的显著增产,超过现有的最好的品种。但是,杂种的制种多数是用人工去雄和人工授粉,造成生产的高成本。 As early as 1894, Mell reported heterosis in cotton interspecific hybridization. Later researchers pointed out that this advantage can play an important role in maturity, yield and fiber character in interspecific and intraspecific crosses of cotton (Upland cotton) enhancement. In India, the use of F1 hybrid cotton hybrids has brought a significant increase in lint, over the best available varieties. However, the majority of hybrids are manufactured by artificial male and pollination, resulting in high production costs.