Effects of 6-Benzylaminopurine Combined with Prohexadione-Ca on Yield and Quality of Chrysanthemum morifolium Ramat cv. Hangbaiju

Increasing shoot branch numbers of Chrysanthemum morifolium Ramat cv. Hangbaiju (Hangbaiju) is crucial for producing high flower yields. Pot experiments were designed to evaluate the effects foliar application 6-benzylaminopurine (6-BA) combined with prohexadione-Ca (Pro-Ca) on yield and quality flowers. Foliar 6-BA Pro-Ca typically increased leaf chlorophyll content decreased soluble sugar protein contents throughout floral organ growth phase. At bud formation phenophase stage (August), gibberellin (GA), indole-3-acetic acid (IAA), zeatin (ZA) (except GA in 10 mg L−1 100 treatment), but abscisic (ABA) increased. The flowers was found higher plants treated Pro-Ca. Higher yields 6-BA5 + Ca100 6-BA10 treatments than Ca50 treatments, highest observed 6-Ba5 treatment both 2019 2020. Nutritional indices such as sugar, protein, total amino acid, water extract increased, medicinal flavonoid, phenolics, chlorogenic cynaroside, 3,5-dicaffeoyl quinic slightly after Pro-Ca; however, they all standards recorded Chinese Pharmacopeia. Overall, could increase nutritional flowers, enhancing its tea quality.