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Method for seed reproduction of huge multi-leaf tobacco variety

A technology for breeding seeds and tobacco, applied in fertilization methods, horticultural methods, botanical equipment and methods, etc., can solve problems such as difficulties in breeding giant multi-leaf varieties, and achieve the effects of shortening the breeding period, easy management, and quality assurance

Inactive Publication Date: 2015-06-03
HUBEI TOBACCO SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for multiplying giant leafy tobacco varieties, which can promote the cultivation of giant leafy tobacco plants to flower earlier in the normal growing season, and solve the problem of difficulty in breeding giant leafy tobacco varieties in the normal growing season

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] In late July 2013, a multi-leaf single plant was found in the K326 breeding field of the Hubei Provincial Tobacco Research Institute Breeding Center in Fangxian County, Hubei Province, with 38 leaves that had not yet budded, while other surrounding tobacco plants had blossomed and borne fruit. Except that the leaves of this tobacco plant are smaller than other tobacco plants of K326, the plant type and leaf characteristics are very similar to those of K326, and there is no disease in the field. So it was marked, and after flowering, it was bagged separately and reserved for seeds. However, due to the worker's misoperation, the tobacco plant was topped, leaving 22 leaves. So use a cotton ball and a brush to dip the compound solution containing 6-BA 20 mg / L and NAA 5 mg / L that has been prepared during K326 propagation and apply it on the 2nd to 5th leaf axils downward from the top of the main stem of the tobacco plant. . At the same time, apply 2 Kg of pure nitrogen, N:...

Embodiment 2

[0016] In February 2014, the seeds of the multi-leaf tobacco strain harvested in Example 1 were sown in the Lichuan Breeding Base of the Hubei Academy of Tobacco Science, and the emergence was normal. On May 5, 30 plants were planted in the germplasm resource nursery using conventional cultivation measures. , In late July, more than 30 leaves had grown and buds had not yet appeared, so 10 plants with better growth were selected for topping, and 18 leaves were left, and the seeds were planned to be reserved through the branch tobacco. The rest of the individual plants were not topped and kept as observation records. On the day of topping, use the pre-prepared compound solution containing 100 mg / L of 6-BA and 10 mg / L of NAA to evenly spray the leaves and stems within 1-6 leaves from the top of the main stem of the topping tobacco plants and leaf axils. On the second day of topping, apply 1 Kg of pure nitrogen and N:P per mu 2 o 5 :K 2 O=1:2.0:2.5 calculation, topdressing tob...

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Abstract

The invention provides a method for seed reproduction of a huge multi-leaf tobacco variety. The method comprises the following steps of when a tobacco plant grows to 30 to 40 leaves, topping, and remaining 18 to 22 leaves; when the tobacco plant grows with axillary buds after the topping, remaining the axillary buds in the two to five leaf axils under the top end of a main stem, and removing the other axillary buds; enhancing field management, and culturing the remained axillary buds into tobacco branches; after each tobacco branch blooms, trimming the branches and flowers, remaining the seeds, and controlling the number of fruits of each branch to be less than 80. The method has the advantages that the huge multi-leaf tobacco variety is promoted to early bloom in the conventional growth season, and the problem of difficulty in seed reproduction of the huge multi-leaf tobacco variety in the conventional growth season is solved, and the method is suitable for hybrid seed production using the huge multi-leaf tobacco variety as a parent.

Description

technical field [0001] The invention belongs to the technical field of tobacco breeding, and in particular relates to a method for multiplying giant leafy tobacco varieties. Background technique [0002] Tobacco is the main raw material crop of cigarettes and an important economic crop in China, and the variety is the basis of flue-cured tobacco production. In the breeding of tobacco varieties, most tobacco variety resources are not sensitive to the length of sunshine, but a few "giant" multi-leaf varieties show obvious short-day nature, and the meristems of their growth vertebrae can only grow under short-day conditions. Only when they are differentiated into flower buds can they bud and bloom, such as Innovation No.5, Qiaozhuang Duoye, Songguan Duoyeyan, 581, Kutsaga Mammoth 10, NC22NF, NC37NF, etc. This kind of variety resource is cultivated in the normal tobacco growing season. It can only differentiate leaf buds, but not flower buds. There are as many as hundreds of le...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01G7/06A01C21/00
CPCA01G22/00
Inventor 曹景林程君奇李亚培吴成林
Owner HUBEI TOBACCO SCI RES INST
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