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A rapid breeding method for three-cross combination of high zinc hybrid rice

A hybrid rice, hybrid indica technology, applied in the directions of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problem of high zinc content rice production cost and high rice price, large gap in disease resistance, hindering the process of industrialization and other problems, to achieve better disease resistance and adaptability, shorten breeding time, and increase yield.

Inactive Publication Date: 2016-05-18
浙江谷佑生物科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the breeding of high-zinc rice sterile lines is still in its infancy, high-zinc hybrid rice is in the stage of cross-breeding of sterile lines, maintainer lines and restorer lines, and its yield, disease resistance, adaptability and quality levels are comparable to those of the latest There is a large gap between the rice varieties and hybrid combinations bred and promoted, resulting in high production costs and high rice prices for rice with high zinc content, hindering the industrialization process

Method used

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  • A rapid breeding method for three-cross combination of high zinc hybrid rice
  • A rapid breeding method for three-cross combination of high zinc hybrid rice
  • A rapid breeding method for three-cross combination of high zinc hybrid rice

Examples

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Effect test

Embodiment 1

[0024] Example 1 The breeding method of the high-zinc hybrid indica rice three-cross combination based on the hybrid indica rice Zhongzheyou No. 1

[0025] In this example, Zhongzheyou 1, a high-quality, high-yield, and disease-resistant hybrid indica rice combination, was selected. Corresponding materials Zhongzhe A, Zhongzhe B, and Hanghui 570 (available from Zhejiang Wuwangnong Seed Industry Technology Co., Ltd. and China Rice Research Institute) are hybrid indica sterile line (A1), maintainer line (B1), restorer line (R1); high-zinc-content rice "Jiazhedao No. 1", which can be purchased from the applicant unit or Zhejiang University, is a rice variety with a zinc content of more than 30 mg / Kg cultivated through the mutagenesis technology in cooperation with Zhejiang University in industry-university-research institutes. The zinc content of ordinary rice (generally below 15mg / Kg) is 2 to 3 times, and has been applied for protection to the Plant Variety Protection Office of ...

Embodiment 2

[0034] Example 2 Breeding method of high-zinc hybrid japonica rice three-cross combination based on hybrid japonica rice Jiayou No. 5

[0035] In this example, Jiayou 5, a hybrid rice combination with high quality, high yield and disease resistance, was selected. Corresponding materials Jia 335A, Jia 335B, and Jiahui 125 (available from Jiaxing Academy of Agricultural Sciences) are hybrid rice sterile lines (A2), maintainer lines (B2), and restorer lines (R2). The high-zinc-content rice "Jiazhedao No. 1" can be purchased from the applicant unit or Zhejiang University. It is a rice variety with a zinc content of more than 30mg / Kg cultivated by cooperation with Zhejiang University through industry-university-research cooperation. It is an ordinary rice (general 2 to 3 times the zinc content (below 15mg / Kg), has applied for protection to the Plant Variety Protection Office of the Ministry of Agriculture, and the application announcement number is CNA010411E.

[0036] The rice Ji...

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Abstract

The invention discloses a rapid breeding method of high-zinc hybrid rice three-way cross combination, and belongs to the technical field of crossbreeding. The method comprises the following steps: firstly, selecting targeted high-quality, high-yield and anti-disease hybrid rice combination, subsequently respectively hybridizing and backcrossing high-zinc content rice with a maintainer line and a restoring line of hybrid rice, test-crossing with a sterile line of the hybrid rice in pair, breeding the maintainer line and the restoring line of the high-zinc rice, preparing a sterile line of the hybrid high-zinc rice by taking the sterile line of the rice as a female parent and taking the maintainer line of the high-zinc rice as a male parent, and further preparing the high-zinc hybrid rice three-way cross combination by taking the sterile line of the hybrid high-zinc rice as the female parent and the restoring line of the high-zinc rice as the male parent. The high-zinc hybrid rice three-way cross combination bred by using the method disclosed by the invention has the characteristics of integration of high zinc content, high yield, high quality and disease resistance, and the breeding time of the high-zinc hybrid rice can be remarkably shortened.

Description

technical field [0001] The invention belongs to the technical field of hybrid breeding, and in particular relates to a rapid breeding method for three-cross combination of high-zinc hybrid rice. Background technique [0002] Micronutrients exist widely in nature, but the human body cannot synthesize them by itself and must be supplemented in the diet. Nearly 50% of the world's population is affected by zinc micronutrient deficiency, and this trend is still increasing. Micronutrients have become an important global factor affecting human health. According to incomplete statistics, not only nearly 800,000 children die due to zinc deficiency every year in the world, but zinc deficiency also seriously affects the intelligence and development of infants and young children, bringing heavy mental and economic burdens to individuals, families and the country. [0003] Zinc is mainly found in seafood and animal offal, among which oysters contain the highest zinc, and other foods con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/02
Inventor 吴殿星舒小丽孙健
Owner 浙江谷佑生物科技有限公司