Observation of Floral Organogenesis and Development of Tagets erecta L. Study on EST-derived SSR Marker Development of Chrysanthemum morifolium and Its Transferability to Tagetes erecta L. Genetic Diversity with Molecular Marker SRAP of Tagetes erecta L. The Research of the Edible Pigment of Inflorescence of Tagetes erecta L. and Its Stability Fingerprint for methanol extract of Tagetes erecta flowers from Heilongjiang Province Fingerprint for methanol extract of Tagetes erecta flowers from Heilongjiang Comparative Studies on the Development of Male and Female Gametophytes Between Fertile Line and Male Sterile Line’s Flowers of Tagetes erecta L. Genetic Diversity with Molecular Marker SRAP of Tagetes erecta L. Observation of Floral Organogenesis and Development of Tagets erecta L. Effects of plant growth regulators on Tagetes erecta L.seedling growth