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Method for improving Yunyan 87 cured tobacco variety

A flue-cured tobacco variety, Yunyan technology, applied in the field of flue-cured tobacco cultivation, can solve the problems of large segregation of offspring of hybrids, easy death of hybrids, and incompatibility of hybrids, and achieve the effects of excellent comprehensive traits, coordinated chemical components, and small coefficient of variation

Active Publication Date: 2012-06-20
HONGYUN HONGHE TOBACCO (GRP) CO LTD
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AI Technical Summary

Problems solved by technology

The technical difficulties are the incompatibility between the two varieties, the hybrid is easy to die young, usually infertile, the offspring of the hybrid is separated greatly, and it is not easy to stabilize, etc.

Method used

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  • Method for improving Yunyan 87 cured tobacco variety

Examples

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Effect test

Embodiment 1

[0019] 1,000 plants of Yunyan 87 flue-cured tobacco and Geranium geranium Weimlange were planted in the red tobacco flue-cured tobacco base in Mile County, Yunnan Province, and the comparison tests of grafting compatibility, plant growth characteristics after grafting, disease and insect resistance and quality of flue-cured tobacco leaves were carried out. The specific operation steps are as follows:

[0020] 1. Rootstock cultivation

[0021] The rootstock is selected from the Geranium weimlange variety. The breeding method of geranium is mainly cutting, but also can be sown or tissue culture. The inventor cut the thick branches with terminal buds during April to May of the previous year, and the length was 5-8cm. Cuttings were carried out after the incisions were dried, and 2-3 terminal buds were kept, shaded and moisturized. After the seedlings grow new leaves, they are transplanted in the field. Around April of the following year, geraniums that are robust, free from dise...

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Abstract

The invention discloses a method for improving Yunyan 87 cured tobacco variety. The method comprises the steps of: selecting rose pelargonium Weimulange as a root stock and Yunyan 87 cured tobacco seedling as a scion, grafting by adopting an approach grafting method, and culturing to obtain new plants. According to the invention, the new plants have small variation coefficient of agronomic characters, flourishing root systems, wide applicability, drought resistance and few diseases and pests; particularly, the incidence of mosaic disease and bacterial wilt of Yunyan 87 is obviously reduced; the advantages of the parents are better gathered in the tobacco quality, disease resistance and other characters of the new plants, and the comprehensive characters of the new plants are superior to those of Yunyan 87; the cured tobacco of the new plants is golden yellow in color, high in oil content, loose in structure, moderate in leaf thickness, harmony in chemical ingredients, good in essence quality, enough in essence quantity and light in rose and mint essence; and the new plants have better industrial utilization value.

Description

technical field [0001] The invention belongs to the technical field of flue-cured tobacco cultivation, and in particular relates to a method for improving Yunyan 87 flue-cured tobacco variety through distant hybridization. Background technique [0002] According to statistics, in 2010, the three varieties of flue-cured tobacco, K326, Yunyan 85 and Yunyan 87, accounted for more than 70% of the total planting area of ​​flue-cured tobacco in China, of which Yunyan 87 had a planting area of ​​3.243 million mu, accounting for 32.2% of the national tobacco leaf planting area. The phenomenon of simplification of varieties is prominent, and from the perspective of genetic characteristics, the three main varieties have a relatively close relationship. In the same ecological region, the aroma quality characteristics of tobacco leaves are not significantly different, and cannot form a unique aroma. It can be seen that the single variety and the lack of outstanding aroma characteristics...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/06A01G1/00
Inventor 李辉李慧马骥李滟芳冯洪涛周桂园余贺龙谢志强刘晓波田孟玉
Owner HONGYUN HONGHE TOBACCO (GRP) CO LTD
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