Short-life and low-cost strawberry hybridization breeding method

Abstract

The invention discloses a short-life and low-cost strawberry hybridization breeding method, and belongs to the strawberry hybridization breeding technology. The strawberry hybridization breeding method is characterized in that the following methods are adopted in the hybridization breeding process: a method A, the hybridization performing time is brought forward by adopting a time backward method, and phenological period selection and superior plant selected commentary in hybridization seed obtaining, sowing and seedling culture and superior system primary selection are performed in the first year; a method B, an intensification concentrated sowing and seedling culture and bud seedling transplanting method is adopted to replace an aperture disk one-time sowing and seedling culture method; a method C, a single plant selection and step-by-step direct elimination method is adopted to replace a method of investigation and statistic of offspring of each plant in the steps of phenological period, plant type, fruit quality and disease resistance screening; and a method D, an open field natural identification method is adopted for disease resistance screening and is adopted to replace an inoculation identification method in laboratory conditions in the disease resistance screening step. Compared with the prior art, the method shows that the variety breeding selection period of at least 6 years in the prior art is significantly reduced to 4 years, and the breeding cost is reduced substantially.

Description

technical field [0001] The invention belongs to strawberry hybrid breeding technology, in particular to a short-year and low-cost strawberry hybrid breeding method. Background technique [0002] Strawberry is a hybrid formed by the combination of two gametes with different genotypes, and its DNA has different alleles, such as Aa, AaBb, AaBbCc and so on. In their selfed offspring, the traits controlled by these pairs of genes segregate. In its breeding population, each individual plant is different from other plants in terms of hereditary traits, which is manifested in severe segregation of hereditary traits in offspring, which provides a basis for breeding that is different from other plants. Strawberry crossbreeding methods in the prior art all adopt hybridization in the same year, sow seeds and raise seedlings in the next year, enter the seed selection nursery in the 3rd year, carry out disease resistance identification in the 4th year, be shortlisted in the re-selection ...

AI Technical Summary

Problems solved by technology

Not only the breeding period is long, but also the input cost is high, which has caused troubles for strawberry hybrid breeding, hindered the expansion of strawberry breeding scale, and led to a sharp decline in the quantity and quality of new strawberry varieties independently selected

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