Seed production method of vegetable male sterile line hybrid

Abstract

The invention relates to a seed production method of a vegetable male sterile line hybrid, which belongs to the technical field of agricultural planting and can be applied to seed production of a vegetable first-filial generation variety bred by taking a male sterile line material as a female parent. A radish male sterile line hybrid seed production method is used as an example for explanation. The method comprises the following steps of 1, seed field selection, and 2, raising seedlings of radishes and Chinese cabbages. The radish is selected from a three-line matching breeding variety, and a radish female parent is a male sterile line material. The Chinese cabbage is selected from a male sterile line material. According to the seed production flowering seedling age requirements of the radish female parent, the male parent and the Chinese cabbage and the principle of flowering phase encountering, the seedling culture time is determined, and a conventional small-plant seed collecting method is used for management. 3, transplanting and field planting are conducted. Radish male parents, radish female parents and Chinese cabbages are planted in sequence according to the seedling culture time. Conventional management is conducted. After the full-bloom stage of the radish female parent is finished, the full-bloom stage of the Chinese cabbage is also finished, and at the moment, the Chinese cabbage is pulled out while the male parent is pulled out. According to the method, the cross pollination rate of the radishes is increased, and then the cross seed production yield of the radishes is increased.

Description

technical field [0001] The invention belongs to the technical field of agricultural planting, and relates to a method for producing hybrid seeds of vegetable male sterile lines, in particular to a method for producing hybrid seeds of radish male sterile lines, and the method can also be applied to some male sterile line materials as Seed production of vegetable hybrid first-generation varieties selected by female parent. Background technique [0002] The seeds used for radish production in my country are basically first-generation hybrid seeds, most of which are selected from three lines with cytoplasmic male sterile line material as the female parent, and have strong heterosis. The low yield of current hybrid seed production has been a problem. Because the male sterile line of radish is the female parent, field seed production mainly relies on insects such as bees for pollination. The mother plant of radish has no pollen and accounts for 3 / 4 of the entire plot. The male pa...

AI Technical Summary

Problems solved by technology

Because the male sterile line of radish is the female parent, field seed production mainly relies on insects such as bees for pollination. The mother plant of radish has no pollen and accounts for 3 / 4 of the entire plot. The male parent only provides pollen for a small proportion of planting. The pollen of the radish is less, and the flower color of the radish is not very bright, and the smell is light, so the ability to attract pollinating insects such as bees is weak, and the pollination rate of the female parent of the radish is not high, which is one of the main reasons for the low yield of radish seed production.