Selective breeding and propagating method of ecological type sterile line of yellow-sprout capsicum

An eco-type and sterile line technology, applied in botany equipment and methods, applications, plant gene improvement, etc., can solve the problems of low yield of natural hybrid seed production, influence on hybrid purity, low purity of hybrids, etc., and achieve breeding target traits And the effect of controllable program, improved breeding efficiency, and simple breeding procedure

Inactive Publication Date: 2013-09-11
ZHENJIANG SUIHAN AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, there are disadvantages such as environmental pollution and low purity of hybrids in chemical castration seed production. Therefore, artificial castration and male sterile line seed production are mainly used in the world.
The disadvantages of artificial detasseling are: the stamens of the female flower buds must be removed during seed production, which is labor-intensive and time-consuming. At the same time, due to incomplete detasseling, the purity of hybrids will be affected, resulting in production risks.
At present, the natural hybridization of cytoplasmic male sterile lines is used to produce seeds in the open field. However, the yield of natural hybrid seed production is low, and some male sterile lines that can produce a very small amount of pollen may self-fertilize under the action of insects, which affects the purity of hybrids. Using artificial hybrid seed production, pollination at the bud stage improves the purity of hybrids, and can basically produce hybrid seeds that meet the requirements
Nevertheless, in actual production, due to the need to improve the hybrid purity as much as possible, the use of pollination at the bud stage also increases the labor of artificial assisted pollination, and the efficiency is lower than that of direct pollination at the flowering stage, and the identification of hybrid purity is time-consuming ( 60-75d), very labor-intensive

Method used

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  • Selective breeding and propagating method of ecological type sterile line of yellow-sprout capsicum
  • Selective breeding and propagating method of ecological type sterile line of yellow-sprout capsicum
  • Selective breeding and propagating method of ecological type sterile line of yellow-sprout capsicum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Such as figure 1 As shown, the present embodiment selects bud yellow pepper ecotype male sterile line LY77AB by the following method

[0029] LY77AB: L stands for Yangjiao pepper, y stands for Yahuang, 77 stands for the original line number, A stands for the sterile line (A), B stands for the maintainer line (B), AB stands for two lines into one line (AB).

[0030] In the spring of 2008, the bud yellow pepper cytoplasmic male sterile line 140-6A was used as the female parent to cross with Ly claw pepper to obtain the first hybrid (F1).

[0031] In the autumn of 2008, the first generation of hybrids (F1) were sown in Zhenjiang in autumn, and some fertile or fertile plants in autumn were selected from them, and the F2 generation was obtained by selfing. Different lines were numbered separately, and the seeds were divided into two.

[0032] In the spring and autumn of 2009, the F2 generation was sown separately, and the seeds with a bud yellow mark sterile plant rate ≥ 50...

Embodiment 2

[0049] The method of this example is the same as that of Example 1, except that the cytoplasmic male sterile line 140-2A of bud yellow pepper is used as the female parent. The test results are shown in Table 1 and Table 2.

Embodiment 3

[0051] The method of this example is the same as that of Example 1, except that the cytoplasmic male sterile line 140-8A of bud yellow pepper is used as the female parent. The test results are shown in Table 1 and Table 2.

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Abstract

The invention relates to a selective breeding and propagating method of a plant, particularly relates to a selective breeding and propagating method of a capsicum, belonging to the technical field of plant breeding. Compared with the existing selective breeding technology of a male sterile line of a capsicum, the method has the advantages that the breeding procedure is simple and convenient, the breeding target character and procedure are controllable, the sterile plant rate and the sterile degree are high, and the breeding efficiency is enhanced. A new approach is developed for capsicum heterosis utilization, selective breeding of a leaf color marked sterile line, rapid purity identification of hybrid F1-generation seeds, and the like.

Description

technical field [0001] The invention relates to a plant selection and breeding method, in particular to a pepper selection and breeding method, and belongs to the technical field of plant breeding. Background technique [0002] Studies have shown that there is obvious heterosis in hybrids among pepper varieties. The ways to utilize heterosis in pepper include artificial emasculation interspecific hybridization, double-cross, three-cross and male sterile line (male sterile dual-purpose line hybrid seed production, cytoplasmic male sterile line seed production), chemical detasseling Androgen seed production. Among them, there are disadvantages such as environmental pollution and low purity of hybrids in chemical castration seed production. Therefore, artificial castration and male sterile line seed production are mainly used in the world. The disadvantages of artificial detasseling are: the stamens of the female flower buds must be removed during seed production, which is la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/04A01H1/02A01G1/00
Inventor 马志虎潘跃平孙春青孙国胜戴忠良毛忠良吴国平王建华潘永飞张振超秦文斌姚悦梅
Owner ZHENJIANG SUIHAN AGRI
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