FQ-PCR Analysis on the Differential Expression of the Key Enzyme Genes Involved in Isoprenoid Metabolic Pathway in Allelopathic and Weak Allelopathic Rice Accessions (Oryza sativa L.) under Nitrogen Stress Condition Optimization of real-time quantitative fluorescence PCR system in detecting cytochrome b gene of Prorocentrum donghaiense Lu. Effective of ginkgolides on expression of apoptosis related gene during PC12 cells glucose deprivation Expression Profiles of Rice Soluble Starch Synthase(SSS) Genes in Response to High Temperature Stress at Filling stage