DEVELOPING CROP PLANTS FOR PRODUCTION OF BIODEGRADABLE PLASTICS BY TRANSGENIC APPROACHES Cloning and Sequencing of phbB and phbC in Alcaligenes eutrophus H16 and Construction of Their Plant Expression Vectors Studyon the selection of high-yield PHB producingstrain by technique of protoplasts Obtainment of Transgenic Tobacco Harboring phbA, phbB and phbC Genes by Twice Transformation Prohibitin and Oxidative Stress A Study on the Technique for Seabeach Cultivation of Dendrocalamopsis oldhami