Rapid cutting propagation method for zinc and cadmium hyperaccumulator sedum plumbizincicola

Abstract

A rapid cutting propagation method for zinc and cadmium hyperaccumulator sedum plumbizincicola comprises the following steps: stems of the sedum plumbizincicola are cut out, bases are inserted in a rooting culture solution and cultured at 15-23 DEG C for 7-20 days, the cultured stems are transplanted in a seedling culture substrate and managed by a traditional farming method, overground parts areharvested after plants grow to 15 cm-30 cm, the overground parts as seedlings are cut into stems of 6-10 cm with axillary buds again, and the stems with the axillary buds are cut in a seedling culturesubstrate or a nutrient solution, wherein the rooting culture solution is a base nutrient solution containing an auxin analogue and a cytokinin analogue in a concentration ratio of 1:2, the base nutrient solution is a 50% Japanese gardening formula nutrient solution, and the seedling culture substrate contains vermiculite and perlite in a ratio of 3:1 or an organic soil substrate. The cutting propagation method for the sedum plumbizincicola greatly improves the cutting propagation rate, the rooting speed and the survival rate of the sedum plumbizincicola, solves the key technical problem of rapid propagation of the sedum plumbizincicola, and has important values for rapid propagation and industrial seedling culture production and promotion of the sedum plumbizincicola.

Description

technical field [0001] The invention belongs to the technical field of rapid propagation of heavy metal hyperaccumulation plants, and in particular relates to a method for rapid cutting propagation of zinc and cadmium hyperaccumulation plants with Sedum sedum. Background technique [0002] Sedum sedum is a perennial succulent herb; the rhizome is long and traverses: root-fibrous. Sterile branches erect, densely clustered, multi-branched; flower stems usually 1 to 3 stems emerge from the sterile branches, often slightly higher than the sterile branches, up to 35 cm high and 0.8 cm thick. The leaves are alternate, the lower part of the stem often falls early, the top leaves are dense, ovate or obovate oblong, 1-5 cm long, 0.5-1.5 cm wide, apex obtuse, base cuneate, tapering to long pseudostalk, There is an inconspicuous short moment at the base of the back. The inflorescence is born on the top of the flower stem, and is a cyme with 2 to 3 branches (sometimes 4 branches). Fl...

AI Technical Summary

Problems solved by technology

However, the seed grains of Sedum sedatus are small, the sowing and seedling techniques are cumbersome, the cycle is long and the seedlings are slow, and the cutting propagation technology is often used in production, while direct cuttings are often prone to infection and disease due to slow rooting, resulting in slow growth and reproduction. Affect its large-scale promotion of planting

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