A method for directional breeding of flue-cured tobacco varieties resistant to black shank

A breeding method and black shank technology, which is applied in the field of directional breeding of flue-cured tobacco varieties resistant to black shank, can solve the problems of long breeding process and low efficiency, and achieve the effects of shortening the breeding period, reducing time, and reducing the workload of breeding

Active Publication Date: 2018-09-21
TOBACCO RES INST HENAN ACADEMY OF AGRI SCI
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Problems solved by technology

[0004] In view of the traditional breeding technology of new flue-cured tobacco varieties, the "pedigree method" is mainly used, and the related identification of disease resistance and quality is carried out after the strain is stable. The breeding process is long and the efficiency is low.

Method used

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Embodiment 1

[0037] Yuyan No. 7 is a first-generation flue-cured tobacco hybrid.

[0038] In 2002, we prepared a hybrid combination. From 2003 to 2004, we conducted a strain identification test in a black shank disease nursery. In 2005, we participated in the regional experiment of improved varieties of flue-cured tobacco in Henan Province. From 2006 to 2007, we participated in the regional experiment of improved varieties of flue-cured tobacco in China. In 2007, the supporting technology research of new varieties of flue-cured tobacco in Henan Province and other small-area production demonstration tests passed the provincial evaluation in August 2007 and were named Yuyan No. 7. From 2008 to 2009, the main supporting technology research and improvement work was carried out. In 2009, the national regional trial production test was carried out and passed the national field agricultural review. In 2010, it passed the approval of the National Flue-cured Tobacco Variety Approval Committee.

[0...

Embodiment 2

[0045] The line Y106 is a conventional hybrid.

[0046] In 2002, F 1 , planted in a blackleg disease nursery in 2003, self-crossed to obtain F 2 , planted in the black shank disease nursery from 2004 to 2005, and planted in the field from 2006 to 2007. The pedigree method was used to select a single plant to obtain a stable line. In 2008, we carried out strain identification and small-scale demonstration tests; from 2009 to 2011, we participated in the regional trials of flue-cured tobacco varieties in Henan Province; from 2012 to 2013, we participated in the national (Northern) regional trials of flue-cured tobacco varieties, and at the same time participated in the comparative demonstration trials of new varieties of flue-cured tobacco in Henan Province, and Carry out research on relevant supporting technologies; In 2014, participated in the national (Northern Region) flue-cured tobacco variety production test. In August 2014, it passed the national field agriculture revie...

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Abstract

The present invention belongs to the technical field of tobacco breeding, and particularly relates to a flue cured tobacco anti-black shank disease variety oriented cultivation method, which comprises the following main breeding process: germplasm resource screening, parent strain selective pairing, F1 disease nursery identification, F2-3 generation disease nursery screening, F4-6 field identification, strain identification, strain comparison test, regional test, production test, and variety validation, and comprises: 1, selective pairing and hybridization of excellent complementary parent strain materials, wherein excellent complementary parent strain materials are screened from anti-black shank disease, high-yield and high-quality germplasm resource materials and are subjected to hybridization; 2, oriented cultivation, wherein the new strain with advantages of strong black shank disease resistance, strong drought resistance and high yield is selected. According to the present invention, the bred new flue cured tobacco anti-black shank disease variety has characteristics of significant black shank disease resistance, high yield potential, good quality and the like, such that the disease identification time at the late stage is saved, and the cultivation efficiency of the anti-black shank disease variety is improved.

Description

technical field [0001] The invention belongs to the technical field of tobacco disease-resistant breeding, and in particular relates to a method for directional breeding of flue-cured tobacco varieties resistant to black shank disease. Background technique [0002] Tobacco black shank is the most important disease in tobacco production, with high incidence and wide distribution, causing huge economic losses. The disease has not been found in Heilongjiang Province in my country, and it has occurred in other tobacco-growing provinces. For many years, the prevention and control of the disease has mainly adopted a comprehensive control method based on chemical control and combined with cultivation measures. Due to the long-term use of chemical agents, the resistance of many disease-resistant varieties has been lost, but the pathogens have developed resistance. In recent years, it is difficult to plant flue-cured tobacco in crop rotation due to the large area of ​​continuous lan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
Inventor 李雪君丁燕芳王满平文丽孙计平孙焕李耀宇李旭辉俎焕新侯咏
Owner TOBACCO RES INST HENAN ACADEMY OF AGRI SCI
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