Influence of Over-expression of the BoFLC3 and AtFT Genes on Floweringtime and Cold Tolerance in Brassica juncea Molecular cloning and Expression Analysis of a CONSTANS-Like Gene, SlCO1, from Solanum lycopersicum Molecular cloning and Expression Analysis of a CONSTANS-Like Gene, SlCO1, from Solanum lycopersicum Research Progresses on Photoperiodic Flowering and Maturity Genes in Soybean (Glycine max Merr.)