Peltophorum dubium (Spreng.) Taub. is a tree unique to Cattinga, a vegetation in dry areas in Brazil. P. dubium is considered as a rare and drought resistant species. It is the kind of glycophyte subject to salt stress with a narrow salinity threshold, owing to the long-range brine irrigation. Its environment is influenced gradually by salt stress. Therefore, its endurance is paid more and more attention to. The experiment are mainly studying the germination and seeding growth of primed seeds under water st...
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