Method for promoting germination of strawberry seeds

Abstract

The invention provides a method for promoting germination of strawberry seeds, belonging to the strawberry breeding technique. In the prior art, the rate of emergence of strawberry seeds is low, emergent seedlings are irregular, the labor and time are wasted in seedling management, and fine genetic genes of 60-70% of ungerminated seeds are lost. The technical scheme provided by the invention comprises the following steps of: (A) drying pretreatment: insolating in the sun, or drying at low temperature; (B) high-temperature treatment: treating seeds for 24+ / -1 hours at the constant temperature of 30+ / -2 DEG C, treating the seeds for 24+ / -1 hours at the constant temperature of 35+ / -2 DEG C, and treating the seeds for 120+ / -5 hours at the constant temperature of 40+ / -2 DEG C; (C) low-temperature treatment: treating the seeds for 168+ / -5 hours at the constant temperature of 0+ / -1 DEG C, and then, drying the seeds; and (D) pickling treatment: immersing the seeds into sulfuric acid the concentration of which is 98% for 60+ / -5 seconds, repeatedly washing the seeds with clear water, and then, airing the seeds for seeding. The invention shows the following effects: the rate of emergence is increased from 15-25% to 80-85% within 40 days; the seedling emergence regularity reaches more than 85% after 40 days; and 42-50% of seeds which do not germinate after being originally seeded for 60 days are bred.

Description

technical field [0001] The invention belongs to strawberry breeding technology, in particular to a method for promoting strawberry seed germination. Background technique [0002] Strawberry plants are highly heterozygous, and each individual plant is different from other plants in genetic traits in the seedling population. Therefore, the advent of new varieties of high-quality disease-resistant strawberry, its main method is through the means of conventional cross-breeding, with the progeny of hybrid seeds to carry out single-plant selection. Therefore, the germination rate and uniformity of emergence of hybrid seeds have become the key links in strawberry breeding. According to "Jiangsu Agricultural Journal" No. 2, 2001, Ma Hongxiang, Yu Guihong, Wu Weimin, Chen Xiulan, etc. reported in the article "Influence of strawberry achene in vitro culture on seed germination rate", the natural germination rate of strawberry seeds is generally 30-40%. %, not only the emergence rate...

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Problems solved by technology

According to "Jiangsu Agricultural Journal" No. 2, 2001, Ma Hongxiang, Yu Guihong, Wu Weimin, Chen Xiulan, etc. reported in the article "The Influence of Strawberry Achene In Vitro Culture on Seed Germination Rate", the natural germination rate of strawberry seeds is generally 30-40%. %, not only the emergence rate is low, but also the emergence is irregular, some germinate 10 days after sowing, while others need 40 days or even as long as 90 days to germinate

This increases the difficulty of seedling management including seedling transplantation, which is labor-intensive and time-consuming, and 60-70% of the ungerminated seeds cause the loss of good genetic genes to a large extent, reducing the success of new breed selection The probability of this problem has seriously troubled the progress of strawberry cross-breeding work on a large scale

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