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A method for backcrossing dual-purpose lines of spicy/sweet pepper

A dual-purpose line and sweet pepper technology, applied in the field of chili/sweet pepper genetics and breeding, can solve the problems of long time and complicated breeding process of the chili/sweet pepper dual-purpose line, and achieve the effect of increasing the number of backcross generations

Active Publication Date: 2021-08-27
HUNAN VEGETABLE RES INST +1
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for backcrossing the dual-purpose line of hot pepper / sweet pepper, which solves the problems of complicated and long-term breeding process of the dual-purpose line of spicy / sweet pepper Stable spicy / sweet pepper dual-purpose system

Method used

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  • A method for backcrossing dual-purpose lines of spicy/sweet pepper
  • A method for backcrossing dual-purpose lines of spicy/sweet pepper

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Embodiment

[0040] It has been verified in Changsha Breeding Test Base of Hunan Vegetable Research Institute, Shanxi Test Base, and Hainan Sanya Test Base. It has strong feasibility and stable fertility.

[0041] Transplantation of early-maturing, virus-resistant, and high-spicy Chaotian pepper dual-purpose line 15CL01AB:

[0042] Judgment criteria for early maturity: the first flower's node position is less than 10 as early maturity; node position higher than 25 is defined as late maturity, and middle value is defined as mid maturity; antiviral disease judgment standard: disease index is not higher than 30.0; high spicy Judgment of degree of spiciness: the degree of spiciness is above 10,000 SHU as high spiciness.

[0043] 2015.10-2016.3 Sanya, Hainan: Excellent inbred line 15CL01 (from the Indian pepper resources collected in 2011, through multi-generation crossing and directional individual plant selection, an excellent inbred line of high-spicy solitary Chaotian pepper was bred), the in...

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Abstract

The invention discloses a method for backcrossing dual-purpose lines of spicy and sweet peppers. The F1 of the present invention pollinates the sterile plant of the original female parent, obtains the first generation of backcross BC1, and BC1F2 produces a sterile plant:fertile plant 1:1 separation. And starting from BC1, the sterile line is crossed with the target male parent and the offspring of the target male parent at the same time, which can accelerate the homogenization of the target gene. According to the calculation of 3 generations of backcrossing, it takes about 8-9 generations to complete the traditional backcrossing method to transfer dual-purpose lines, which takes a long time. The present invention improves the traditional method of backcrossing and breeding dual-purpose lines, and dual-purpose lines can be bred in 6 generations. Compared with the traditional backcrossing method, the number of backcrossing generations increases, but the total number of generations of breeding does not increase, and the target traits are improved. becoming steady.

Description

technical field [0001] The invention belongs to the technical field of hot pepper / sweet pepper genetics and breeding, and in particular relates to a method for backcrossing dual-purpose lines of hot pepper / sweet pepper. Background technique [0002] Seed production of hot (sweet) pepper sterile lines can overcome the high labor cost and the risk of lower quality, especially purity, in artificial emasculation hybrid seed production. Spicy (sweet) pepper sterile lines are further divided into three lines and dual-purpose lines. The three lines are the cytoplasmic male sterile line, and the application needs three lines of sterile line, maintainer line and restorer line. The dual-purpose line is the nuclear male sterile line. The fertility is controlled by a pair of alleles. In production practice, it is not limited by the recovery source. The fertility is stable and not affected by temperature. The application of male sterile line is more and more extensive. [0003] The tr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 梁成亮陈文超杨莎李雪峰张竹青戴雄泽邹学校
Owner HUNAN VEGETABLE RES INST
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