Clone of Partial Sequence of Caffeoyl-CoA 3-O-Methyltransferase Gene in Ramie Cloning and Expression of Cellulose Synthase Gene in Ramie [Boehme- ria nivea (Linn.) Gaud.] Isolation and Characterization of Microsatellites from Ramie [Boehmeria nivea (L.) Gaud.] Cloning and Sequencing for ISSR Specific Fragments in Cytoplasmic Male Sterile, Maintainer and Restorer Lines of Ramie ( Boehmeria nivea) Molecular Cloning and Express Analysis of Δ1-Pyrroline-5-Carboxylate Synthetase (P5CS) Gene in Ramie