Tomato hybrid seed production method

Abstract

The invention discloses a tomato hybrid seed production method, and belongs to the technical field of genetic breeding. The method comprises the following steps: (1) seedling raising: sowing in mid-to-late February, sowing male parents in three stages, sowing male parents in different stages for 5-10 days, sowing female parents while sowing male parents in the second stage, raising seedlings in a plug tray in a sunlight greenhouse, and disinfecting the sunlight greenhouse and the plug tray before sowing; (2) field planting: performing field planting in March, and disinfecting soil before field planting; the planting ratio of the male parents to the female parents is 1: (4-5), and the male parents and the female parents are continuously and adjacently planted; (3) field management; (4) pollination: disinfecting a pollination tool before pollination, selecting a large flower bud with undispersed pollen, carrying out artificial castration, immediately pollinating after castration, and carrying out pollination after all pollination is finished; (5) harvesting the seeds. According to the method, the seed production process is combined with the disinfection step in each step of refining, so that factors influencing the seed production purity and quality are reduced, and better germplasm resources are provided for tomato planting.

Description

technical field [0001] The invention relates to the technical field of genetic breeding, in particular to a tomato hybrid seed production method. Background technique [0002] Tomato is one of the most important vegetables supplied throughout the year in the world. Its fruit is rich in nutrition and has a special flavor. In recent years, it has maintained a steady growth trend in people's diet. However, tomato is a strictly self-pollinated plant, and heterosis is very obvious. At present, tomato seed production mainly adopts the method of emasculation and pollination. Although it is easy to operate, it also has obvious defects. The main reason is that it is difficult to select flowers, the pollination is too large, the seed production purity is low, and the selected flowers are too small. , The poor development of the flower room affects the pollination and fertilization effect, resulting in low yield. In addition, plastic greenhouses or open fields are currently used for ...

AI Technical Summary

Problems solved by technology

At present, tomato seed production mainly adopts the method of emasculation and pollination. Although it is easy to operate, it also has obvious defects. The main reason is that the selection of flowers is not easy to grasp, the flowers are too large and the powder is scattered, the purity of seed production is low, and the selection of flowers is too small. , Poor development of the flower room affects the effect of pollination and fertilization, resulting in low yield

In addition, plastic greenhouses or open fields are currently used for tomato seed production. This method of seed production is low in cost and widely used by growers. However, due to the lack of strict internal environment and strict disinfection conditions for tomato planting, it is very difficult to It is easy to lead to low purity of seed production and affect the yield of tomato seed production

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