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Breeding method of a curly-leaf sesame inbred line

An inbred line and curly technology, applied in botany equipment and methods, applications, plant genetic improvement, etc., can solve problems such as low oil content, poor product consistency, and poor appearance quality, so as to reduce production costs and improve The effect of seed production efficiency

Inactive Publication Date: 2018-07-24
INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main problems in the development of my country's sesame industry are: ①The output is often low and unstable, hovering at the level of 70 kg per mu for a long time (Yang Mei, Huang Fenghong. The current situation and existing problems, development trends and countermeasures of China's sesame industry. China Oil , 2009, 34(1):7-12); ② Poor disease resistance, prone to stem point blight and Fusarium wilt, and no immune or highly resistant materials have been found so far (Zhang X R, Zhao Y Z, Cheng Y, Feng X F, et al.Establishment of sesame germplasm corecollection in China.Genetic Resources and Crop Evolution,2000,47:273-279); ③The appearance quality is poor, the product consistency is not good, the oil content is low, and the market competitiveness is not strong
So far, there has been no public report on the method of innovating curly leaf germplasm resources by hybrid backcrossing

Method used

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  • Breeding method of a curly-leaf sesame inbred line
  • Breeding method of a curly-leaf sesame inbred line
  • Breeding method of a curly-leaf sesame inbred line

Examples

Experimental program
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Effect test

Embodiment 1

[0031] The method for selecting and breeding curly leaf sesame JQ-1 inbred line, its steps are:

[0032] 1) May-September 2009: Crossed with Ezhi 4 as the female parent and CLSU-9×J972 as the male parent, and obtained F 1 Generation seeds, white grain, strong disease resistance.

[0033] 2) May-September 2010: planting F 1 , code-named 10-11116, pure white grain, strong plant growth, plant height 170cm, yield per plant up to 33.3g, number of capsules per plant more than 120, strong disease resistance in the group, no susceptible plant, self-fertilization, Harvest when ripe.

[0034] 3) May-September 2011: planting F 2 , code-named 11-21142, the growth of the group is good, there is a plant with curly leaves, the leaves are hypertrophic, tender, twisted, fully clasped, and the capsules can be normal. Therefore, take this plant as the female parent, and the non-curly strain in the same line is the male parent, carry out hybridization, and harvest the hybrid F 1 .

[0035] ...

Embodiment 2

[0038] Curly leaf sesame JQ-2, JQ-3, the breeding method of JQ-4 inbred line, its steps are:

[0039] 1) May-September 2009: Crossed with Ezhi 4 as the female parent and CLSU-9×J972 as the male parent, and obtained F 1 Generation seeds, white grain, strong disease resistance.

[0040] 2) May-September 2010: planting F 1 , code-named 10-11116, strong plant growth, pure white grain, strong plant growth, plant height 170cm, yield per plant up to 33.3g, number of capsules per plant more than 120, strong disease resistance in the group, no one plant infection Diseased, selfed, mixed when mature.

[0041] 3) May-September 2011: planting F 2 , code-named 11-21142, the growth of the group is good, there is a plant with curly leaves, the leaves are hypertrophic, tender, twisted, fully clasped, and the capsules can be normal. Therefore, using this plant as the female parent, the bred varieties Zhongzhi 18, Ganzhi 3, and 08-51113 were respectively used as the male parents for hybridi...

Embodiment 3

[0045] Examples of implementation effects of curly-leaf sesame inbred lines JQ-1, JQ-2, JQ-3, JQ-4

[0046] Based on the above method, this example screened and bred excellent curly-leaf sesame inbred lines JQ-1, JQ-2, JQ-3, JQ-4, and the identification test showed that these excellent lines had outstanding comprehensive characteristics. Compared with the common white sesame Ezhi No. 4 variety, the rolling-leaf inbred lines had little difference in plant height, initial capsule position, capsule number per plant, thousand-grain weight, stem spot blight resistance, fusarium wilt, growth period, etc. The yield is slightly lower, but the biological yield is higher, so it is an excellent new white sesame germplasm suitable for vegetable use and two-line hybrid seed production. Compared with ordinary white sesame, it has the following advantages: (see Table 1). On the basis of the stability of the identification nursery test, the JQ-1 excellent line will be applied for the new var...

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Abstract

The invention discloses a breeding method of a curly-leaf sesame inbred line. The breeding method comprises the following steps: 1) with white sesame Ezhi No.4 as a female parent and CLSU-9*J972 as a male parent, breeding a hybrid combination F1; 2) selfing F1 hybrid seeds to obtain F2; 3) with a curly-leaf plant in an F2 population as a female parent, crossing with a non-curly-leaf sister plant or an improved variety in the same family to obtain a hybrid F1; 4) with the hybrid F1 as a female parent, crossing with a non-curly-leaf sister plant in the same family to obtain a sister cross F1, or backcrossing with the improved variety to obtain BC1F1 seeds; 5) selecting a curly-leaf plant from the sister cross F1 or the BC1F1 generation for performing sister crossing or backcrossing to reserve seeds; 6) performing 3-5 generations of sister crossing or backcrossing to obtain the curly-leaf sesame inbred line after homozygosis. By the breeding method, a new breeding way for establishing germplasm resources of curly-leaf sesame is provided; curly-leaf leaves are fat and tender, are high in biological yield and can be used as vegetables, so that compared with the conventional variety, the curly-leaf sesame inbred line has obvious advantages, and thus can be popularized and applied in breeding and production.

Description

technical field [0001] The invention belongs to the technical field of plant breeding, and in particular relates to a method for breeding curly-leaf sesame inbred lines. Background technique [0002] Sesame is one of the main oil crops in my country. Sesame oil has pure aroma and high nutritional value, and is known as the "king of oils". The annual planting area of ​​sesame in my country is about 600,000 hectares, accounting for one tenth of the world's total area, with a total output of 600,000-700,000 tons, accounting for a quarter of the world's total output, and its total output and per unit area rank first in the world (Yang Mei , Huang Fenghong. China's sesame industry status quo and existing problems, development trends and countermeasures. China Oils, 2009, 34(1): 7-12), is a dominant crop for agricultural structure adjustment, and is also a traditional foreign exchange earning crop for export. However, in the past ten years, domestic sesame consumption has risen sh...

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 刘红艳赵应忠周芳杨敏敏周婷杨远霄
Owner INST OF OIL CROPS RES CHINESE ACAD OF AGRI SCI
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