Tomato seed collection technology

1. Seed production of conventional varieties

Tomato plants that are robust, disease-free, and have the characteristics of this variety are selected from the field as seed plants. The plant should be separated from other varieties by more than 10 meters to prevent natural hybridization. The second and third ear fruits of the selected plants were selected, and 4 fruits were selected for each ear . After the fruit is fully red cooked, the fruit shape is neat, the color is bright, and the harvest is in accordance with the variety traits. After harvesting, place it in an environment of about 23 °C for 5 to 7 days, extrude the seeds, let it naturally acidify for 3 days, dissolve the gelatinous substance on the seeds, and wash and dry.

2. Seed production of a hybrid

Note that when the tomato seed parent selection, such as cultivation of early maturing varieties, the parent must have an early maturing varieties; yield varieties such as cultivation, the parent must have a high-yielding varieties. Most of the tomato flowers are open in the morning, and one flower lasts for 4 to 5 days from open to litter . The fertilization ability of female flowers can be maintained for 5 to 8 days, but the tomato flower pollination effect is the best.

The first step: choose the inflorescence and flowers. The hybrid parent uses the second and third inflorescences, leaving 2 to 4 flowers that are close to the base of the inflorescence for hybridization. The flowers that are open at the base of the inflorescence and the thin flowers on the upper part should be removed in time.

The second step: go to the male. In the late stage of petal elongation, before the pollen is immature, go to the male (before the petals are unfolded). When you are male, hold the base of the female flower with your left hand. Use your tweezers to gently lift the petals and remove the anthers. Be careful not to hurt the ovary and after the style, immediately sets emasculation isolation bag.

The third step: pollen collection and preservation. When the father's flower open pollen has not yet been released, the pollen is collected after the morning dew is dried. The method is to open the flowers and dry them, and then gently tap them to make the pollen fall into the container. The unopened pollen sac can be opened and tapped. After the pollen is taken out, it can be stored for 2 days at a low temperature and dry place .

The fourth step: pollination. After 2 to 3 days of emasculation, the mother flower is completely open. When mucus is secreted on the stigma, pollination can be carried out in the windless weather from 8 to 10 am. First remove the paper bag, then use the brush to pick up the pollen and gently apply it to the base of the female flower. Finally, set the paper bag and mark the date of pollination.

The fifth step: seed harvesting. On the sixth day after pollination, the paper bag can be removed and marked on the seed. The seeds are harvested when the seeds are fully red cooked.