Takaki, Massanori [UNESP]Pegolo Gama, Lúcia Helena [UNESP]2022-04-282022-04-281998-12-01Seed Science and Technology, v. 26, n. 2, p. 355-362, 1998.0251-0952http://hdl.handle.net/11449/224108The effect of scarification with sodium hypochloride on light sensitivity in seeds of Lactuca sativa L. cv. Grand Rapids is presented in the paper. Light-requiring lettuce seeds germinated in both dark and continuous light after scarification and 36°C pre-incubation restored light sensitivity at 25°C. Curves of dose-response indicated that chemical scarification induced a change in the control of seed germination from Low Fluence Response to the Very Low Fluence Response. Pre-incubation at 36°C return the control to the Low Fluence Response of phytochrome action.355-362engArtigo2-s2.0-0032405854