Variety making method of cured tobacco male sterile line variety

Abstract

The invention relates to a variety making method of a cured tobacco male sterile line variety. The method comprises the following steps of (1) planting tobacco male parents and female parents, wherein the male parents are male fertility cured tobacco, and the female parents are male infertility cured tobacco; (2) performing branch smearing treatment on the male parents and the female parents, so that the male parents and the female parents form main rachis and 2 to 4 tobacco branch flower branches; (3) performing pollination on flowers on the tobacco branch flower branches and the main rachis of the female parents by using the pollen of the male parents; (4) harvesting capsules of the female parents. The method has the advantages that the principle of different blooming time of the main rachis and the tobacco branch flower branches, the blooming period of the cured tobacco is prolonged; the longer pollination period is provided for the hybridization and the breeding of the cured tobacco; the influence caused on adverse climates such as rainfall on the pollination can be favorably reduced; the cross pollination work efficiency and the variety making yield can be improved.

Description

technical field [0001] The invention relates to the field of flue-cured tobacco breeding, in particular to a seed production method for a male sterile line of flue-cured tobacco. Background technique [0002] Flue-cured tobacco is an economic crop widely planted in my country. It is the main raw material for cigarette production and one of the bulk agricultural products exported by my country. Therefore, the advantages and disadvantages of flue-cured tobacco varieties have significant social and economic benefits. At present, the main breeding method of flue-cured tobacco is hybrid breeding. Compared with other breeding methods, flue-cured tobacco hybrid varieties have unique heterosis, which can improve the quality, resistance and yield of flue-cured tobacco. [0003] In hermaphrodite flower crops, the male reproductive organs show degenerated deformity or loss of function, which is called male sterility. Flue-cured tobacco male sterile lines refer to flue-cured tobacco ...

AI Technical Summary

Problems solved by technology

[0005] However, artificial pollination is required for the production of male sterile varieties, which requires a lot of manpower. During the flowering period of tobacco, a large amount of labor needs to be organized for surprise completion. It is the main flood season in the middle of the month, and there is a lot of rain. Due to the influence of the weather, the flowering period is often missed and a large number of layoffs are caused. It is difficult to guarantee the completion of the planned seed production.

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