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Efficient breeding method of dual-resistance and dual-function paddy rice

A functional, rice technology, applied in horticultural methods, botanical equipment and methods, plant genetic improvement, etc., can solve the problems of low efficiency, long cycle, inability to take into account functionality and disease resistance, etc., to simplify breeding steps, The effect of shortening the breeding cycle and improving the quality of rice

Inactive Publication Date: 2018-11-30
YIELEAD RICE IND
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention: Aiming at the disadvantages of the existing conventional rice breeding technology that there are many steps, the cycle is long, the efficiency is low, and the functionality and disease resistance cannot be taken into account, a rice breeding technology with both disease resistance and functionality has been invented. Breeding method to improve rice breeding efficiency

Method used

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  • Efficient breeding method of dual-resistance and dual-function paddy rice
  • Efficient breeding method of dual-resistance and dual-function paddy rice
  • Efficient breeding method of dual-resistance and dual-function paddy rice

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Effect test

Embodiment 1

[0041] Embodiment 1: Breeding of DADF1

[0042] Breed according to the following steps:

[0043] (1) The functional rice variety "Yitang 1" (A) with high content of resistant starch, the rice variety "Longjing 42" (B) resistant to rice blast, and the functional rice variety "IR164" (C ), rice variety "IR24" (D) resistant to black-streaked dwarf disease, A and B were crossed, C and D were crossed, and hybrid F was obtained 1 Generations, denoted by F1-AB and F1-CD, respectively.

[0044] (2) Planting hybrid F1 generation, the specific management standards are as follows:

[0045] (2.1) Reasonable dense planting, standardized planting: 9000 litters per mu, three seedlings in each litter form an equilateral triangle, the distance between seedlings is 10 cm, apply sufficient base fertilizer, and plant seedlings in shallow water;

[0046] (2.2) After planting, the shallow water is moistened and irrigated to turn green tillers, and when the total number of tillers reaches 85% of ...

Embodiment 2

[0063] Embodiment 2: Breeding of DADF2

[0064] Breed according to the following steps:

[0065] (1) Select the functional rice variety "W025" (A) with high γ-aminobutyric acid content, the rice variety "Biandao No. 1" (B) resistant to rice flax leaf spot, and the functional rice variety with low water-soluble protein "W3660" (C), rice variety "Kandong 194" (D) resistant to stripe leaf blight, A and B were crossed, C and D were crossed, and hybrid F was obtained 1 Generations, denoted by F1-AB and F1-CD, respectively.

[0066] (2) Planting hybrid F1 generation, the specific management standards are as follows:

[0067] (2.1) Reasonable dense planting, standardized planting: 9000 litters per mu, three seedlings in each litter form an equilateral triangle, the distance between seedlings is 10 cm, apply sufficient base fertilizer, and plant seedlings in shallow water;

[0068] (2.2) After planting, the shallow water is moistened and irrigated to turn green tillers, and when th...

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Abstract

The invention discloses an efficient breeding method of dual-resistance and dual-function paddy rice, and belongs to the field of hybrid rice breeding. The efficient breeding method comprises the steps of respectively performing crisscrossing on two single-function and two single-disease resistance and then performing pollen culture, performing hybridization, the pollen culture and screening operation after screening phenotype, obtaining new rice variety with dual-resistance and dual-function phenotype. By adopting the efficient breeding method of dual-resistance and dual-function paddy rice,the new varieties to enabled to have both health care function and disease resistance, the quality of the variety is improved, application of pesticide during production process is reduced. Compared with traditional hybrid paddy rice breeding, the efficient breeding method provided by the invention has the advantages that no tedious complicated repeated hybridization and purification is needed, the breeding cycle is obviously shortened, and the breeding efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of rice breeding, in particular to a high-efficiency breeding method for double-resistant and double-functional rice. Background technique [0002] Due to the unbalanced regional economic development in my country and the differences in regional natural conditions, people living in different regions have differences in nutritional supply conditions. In recent years, some people living in affluent areas have suffered from hyperglycemia, hypertension, hyperlipidemia, cardiovascular disease, diabetes, kidney disease, obesity, arteriosclerosis, osteoporosis and growth and development due to excess nutrition and unreasonable diet structure. The incidence of diseases such as imbalance has been greatly increased; while in relatively poor areas, some endemic diseases such as iron-deficiency nutritional anemia and vitamin A deficiency have re-emerged due to nutritional deficiencies. These are diseases caused by maln...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04A01H4/00
CPCA01H1/02A01H1/04A01H4/008
Inventor 乔保建任代胜付锡江夏祥华陶元平彭冲
Owner YIELEAD RICE IND