With artificial pollination,the main economic characters of reciprocal F 1 hybrids between two restoring lines and six upland lines were studied. The results showed that the characters of F 1 hybrids were extensively controlled by their nuclear gene; lint percentage,lint index, seed index and fiber length of F 1 hybrids were significantly influenced by Harknessii cytoplasm on a greater extent and the most characters had not obvious interactions between cytoplasms and nuclear gene. As compared with recipr...