Pterospermum kingtungense C.Y.Wu ex Hsue,which is endemic to China,is an endangered plant from the family Sterculiaceae.It is listed as a Grade Two endangered plant for state protection in the Red Dat
Feather is a noninvasive material for avian molecular genetic analysis.Calamus has been proved to be a good source of DNA and widely used.Vane and rachis is also a source of DNA,although the DNA is si
Sable (Martes zibellina) and stone marten (Martes foina) populations are declining sharply and both species are threatened in China.Knowing the sex ratio of a population is important for long-term con