Method for breeding new variety of leaf achillea

Abstract

The invention belongs to the field of vegetable breeding, and in particular relates to a method for breeding a new variety of leaf achillea. The method comprises the following steps of: accelerating germination of hybrid offspring seeds through temperature change; soaking in colchicine solution; screening a polyploidy line from single plants; and performing trait screening and clonal propagation. The ratio of small leaves of the bred new variety in the product is higher, the area of a single leaf is large and round, leaf margin teeth are a few and blunt, the yield is higher, the quality is better, the small leaves can be eaten together with the achillea, and the leaf achillea has higher commercial value and greatly contributes to income increase of farmers and scientific diet of residents.

Description

technical field [0001] The invention belongs to the field of vegetable breeding, and in particular relates to a method for breeding new varieties of celery. Background technique [0002] Cress is a diploid plant, 2n=2x=22; the seeds are difficult to collect and germinate. At the same time, long-term asexual reproduction leads to very mixed genotypes. The test found that the traits of the seeds after sowing are very obvious and complicated. At present, the domestic production All adopt the vegetative propagation method of flower stem sowing; the excellent local varieties of cress are mainly selected through the clonal pedigree breeding method of single plant selection, and are formed through years of continuous directional selection, but the implementation period of this method is too long and the efficiency is low. Obtaining excellent offspring by hybridization can quickly fix excellent species through clonal reproduction, and obtain new varieties after multiplication. [0...

AI Technical Summary

Problems solved by technology

[0004] Cress grows normally under moist soil conditions in greenhouses (greenhouses) and can be harvested in multiple crops. A breakthrough has been made (invention patent number: ZL200610040591.0). Since the growth process is not flooded, the small leaves grow better, and the flavonoids in the small leaves , total phenols, etc. are high in content, and eating with leaflets has a good health-care and therapeutic effect, but the leaflets of the compound leaves of most cress species are oval or long oval, with many and sharp leaf edges, and poor commerciality. , and the further selection of small leaves has better commerciality (the small leaves account for a higher proportion of the product, the single leaf area is larger, round, and the leaf edge is less serrated and blunt), and the yield is higher and the quality is better (the petiole crude fiber content is higher. low) new species of cress with small leaves eaten together, will make greater contributions to farmers’ income and residents’ scientific diet

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