Variety making method of cured tobacco male sterile line variety

A technology of male sterile lines and flue-cured tobacco, applied in botany equipment and methods, applications, plant genetic improvement, etc., can solve problems such as difficulty in ensuring planned seed yield, high pressure on labor organization, missed flowering period, etc., to improve hybrid pollination efficiency and seed production, reduce the impact of pollination, and prolong the effect of flowering

Inactive Publication Date: 2017-12-15
HUNAN TOBACCO CHENZHOU +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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  • Variety making method of cured tobacco male sterile line variety
  • Variety making method of cured tobacco male sterile line variety

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1 A kind of seed production method of flue-cured tobacco male sterile line

[0032] 1. Sowing

[0033] 1-1 Determination of the planting quantity and ratio of male and female parents

[0034] Calculate the planting area of ​​the female parent according to the planned multiplication amount at 100 kg / ha, and calculate the area of ​​the male parent at a ratio of 1:4 for the parent parent. The parent plants were planted in different fields or the same field was divided into two parts according to the area ratio of 1:4, and the planting areas of the parents were marked with conspicuous signs in the field to facilitate the operation and management of seed production.

[0035] 1-2 Determination of parental sowing time

[0036] According to the characteristics of the parents of the breeding varieties, the time from sowing to the initial flowering period of the parents is estimated this year from sowing to the initial flowering period. The female parent's initial f...

experiment example 1

[0059] The harvested fruits of the tobacco plants described in Example 1 and Comparative Example 1 are placed in a dry and ventilated air-drying building in time, and are dried in the sun after a certain period of post-ripening with a clean color strip cloth or plastic mulch. Threshing, after multiple screenings, after winnowing, sterilize with 2% copper sulfate solution for 15 minutes, then wash with clean water, then pad it with cotton cloth and re-dry it, then winnow, then bag and hang the label, measure the yield .

[0060] For the basic comparison of the flowering and pollination period, seed production yield, and pollination efficacy of Example 1 and Comparative Example 1, see Tables 1-2 for specific comparison results.

[0061] The flowering and pollination period of the female parent described in Table 1 embodiment 1 and comparative example 1

[0062]

[0063] Table 1 shows the early flowering stage, the end stage of flowering and the pollinable flowering stage of ...

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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 ...

Claims

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Application Information

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IPC IPC(8): A01H1/02
CPCA01H1/02
Inventor 余金龙罗经仁李云霞周玲红李小一肖艳松李文李宏光方明匡传富
Owner HUNAN TOBACCO CHENZHOU
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