Method for determining optimum picking time of strong-fragrance type nymphaea hybrid

Abstract

The invention discloses a method for determining the optimum picking time of strong-fragrance type nymphaea hybrid. The method comprises the following steps: (1) the blooming phenophase of the strong-fragrance type nymphaea hybrid is observed, and a flowering phase is divided into four stages including a flower bud stage S1, an initial flowering stage S2, a full-bloom stage S3 and a final flowering stage S4; (2) under natural lighting, petals of the strong-fragrance type nymphaea hybrid at the full-bloom stage fully expand, sepals and first-round pedals expand at 160 degrees to 180 degrees, astamen is all visible, and the petals and the stamen are all golden yellow, which determines that the nymphaea hybrid is in the optimum picking time; the method further includes 5 auxiliary detectionmeans: determining a flower color index of the nymphaea hybrid, determining a growth index of the nymphaea hybrid, determining flower fragrance substance components of the nymphaea hybrid, determiningthe protective enzyme activity of the nymphaea hybrid at the flowering stage, and observing a microstructure of fragrance substance secretion of the nymphaea hybrid; and morphological observation iscombined with 5 auxiliary detection means to jointly determine the optimum picking time; and the method has convenient operation and reliable results, can provide a technical support for making of scented tea and extraction of aroma essential oil of the nymphaea hybrid, and has very good practical application value.

Description

technical field [0001] The invention relates to the technical field of ornamental plant planting, in particular to a method for determining the optimum harvest period of a strong-scented perfume lotus. Background technique [0002] Perfume lotus (Nymphaea hybrid) is rich in flower colors, including nine major colors such as yellow, purple, blue, red, and white. Different flower colors have different fragrances, and the fragrance turns from fragrance to rich fragrance, so people also call perfume lotus as "Nine Pins" Fragrance". Under suitable temperature, perfume lotus can bloom all year round, not only can be used as high-quality high-grade fresh cut flowers and important ornamental aquatic flowers, used as potted plants or garden landscaping, etc.; because of its rich flavonoids, polysaccharides and polyphenols It also has great practical value in medicine, food, perfume, cosmetics and other fields, and is a natural flavor and fragrance plant. Perfume lotus, as a multifu...

AI Technical Summary

Problems solved by technology

[0003] At present, in the fields of scented tea production and essential oil extraction, the main choice is the strong-scented perfume lotus, especially the 'yellow flower type' perfume lotus is the most popular, and the main parts used are the flowers of the perfume lotus; and the flowers of the perfume lotus are picked At present, because the best harvest period cannot be determined, people often pick the flowers as soon as they see them. Therefore, the quality of the harvested perfume lotus flowers is uneven, and the processed products, such as scented tea or essential oils, have no uniform quality. Raw materials are lost, and the quality of the product is greatly affected

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