Method for controlling extension of lateral branches of cut chrysanthemum

Abstract

The invention relates to a method for controlling extension of lateral branches of cut chrysanthemum. The method is that before axillary buds of the cut chrysanthemum are not fully extended, a light density ratio of red light to far red light in an illumination environment is adjusted to (0.05-0.80):1, and the above ratio is kept until the cut chrysanthemum firstly blooms. According to the methodprovided by the invention, a light quality ratio is adjusted by a physical method, synthesis and signal transduction of main hormones regulating and controlling branching in chrysanthemum plants are changed, so that expression of related genes controlling the extension of the lateral branches is changed, especially expression of a key integration factor DgBRC1 controlling dormancy and extension ofthe lateral branches is changed, and finally the extension of the lateral branches of the chrysanthemum is affected; and the method effectively solves the prominent problem that artificial and continuous bud picking is needed because the lateral branches are too long and too more in the production process of the cut chrysanthemum, greatly saves labor costs, is simple and easy to implement, has high practicability and is easy to promote.

Description

technical field [0001] The invention relates to the technical field of cultivation of cut chrysanthemums, in particular to a physical method for controlling the elongation of side branches of cut chrysanthemums by adjusting light quality. Background technique [0002] Chrysanthemum (Chrysanthemum×morifolium) is one of the ten traditional famous flowers in my country and one of the four major cut flowers in the world. Chrysanthemum has become a miracle in modern flower breeding because of its rich variation types, and occupies a very important position in flower production (Teixeira da Silva et al. al., 2013). Cut chrysanthemum is one of the main cut flowers and advantageous export flowers in my country. However, the side buds and side buds of the single-headed cut chrysanthemum species that are currently mainly planted are serious, which restricts the efficient production of cut chrysanthemums. For example, the single-headed cut chrysanthemum cultivar 'Shenma' has severe sid...

AI Technical Summary

Problems solved by technology

Cut chrysanthemum is one of the main cut flowers and advantageous export flowers in my country. However, the side buds and side buds of the single-headed cut chrysanthemum species that are currently mainly planted are serious, which restricts the efficient production of cut chrysanthemums.

For example, the single-headed cut chrysanthemum cultivar 'Shenma' has serious side buds and side buds. Under normal growth conditions, all axillary buds in the leaf axils can germinate to form side branches. In order to control the side buds from elongating and forming side branches, only the terminal buds and main flower buds can be obtained. For the growing single-headed cut chrysanthemum, the problem is solved by manually removing side branches throughout the growth and development period. On the one hand, the production cost is greatly increased. On the other hand, if the side buds are not removed in time, the quality of cut flowers will be affected.

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