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Breeding method used for two-line sterile line of Southeast Asia hybrid rice

A hybrid rice, sterile line technology, applied in the fields of botanical equipment and methods, application, plant genetic improvement, etc., can solve the problems of poor applicability, slow increase in export trade scale, and no technical advantages. The effect of wide range, full rice grain and high yield

Inactive Publication Date: 2018-12-21
ANHUI HUARUN BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

China leads the world in hybrid rice seed production technology, but due to its biological characteristics, its applicability is not wide, and the scale of export trade has increased slowly, which has not demonstrated my country's technological advantages

Method used

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  • Breeding method used for two-line sterile line of Southeast Asia hybrid rice

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Select heat-resistant rice variety A, waterlogging-tolerant rice variety B and rice blast-resistant rice variety C as parents, and make hybrids A / C and B / C to obtain hybrid F1 generation, denoted as F 1AC and F 1BC , in which, the genotype of rice variety A with high temperature resistance is aa, the genotype of rice variety B with waterlogging tolerance is bb, the genotype of rice variety C with high blast resistance is cc, and the genotype of F 1AC The genotype is ac and F 1BC The genotype of the rice is bc, the high temperature resistant rice variety A is Wuyunjing 21, the waterlogging tolerant rice variety B is Heiyou 1, and the high blast resistant rice variety C is Liaojing 92;

[0023] 2) put F 1AC with F 1BC Hybridization is carried out to obtain the recrossed F1 generation, which is recorded as F 1ABC , the genotype is abcc;

[0024] 3) Plant F in the diseased area of ​​the field 1ABC The seeds, the population is 2500, select the plants with no disease...

Embodiment 2

[0030] 1) Select heat-resistant rice variety A, waterlogging-tolerant rice variety B and rice blast-resistant rice variety C as parents, and make hybrids A / C and B / C to obtain hybrid F1 generation, denoted as F 1AC and F 1BC , in which, the genotype of rice variety A with high temperature resistance is aa, the genotype of rice variety B with waterlogging tolerance is bb, the genotype of rice variety C with high blast resistance is cc, and the genotype of F 1AC The genotype is ac and F 1BC The genotype of the rice is bc, the high temperature resistant rice variety A is Wuyunjing 21, the waterlogging tolerant rice variety B is Heiyou 1, and the high blast resistant rice variety C is Liaojing 92;

[0031] 2) put F 1AC with F 1BC Hybridization is carried out to obtain the recrossed F1 generation, which is recorded as F 1ABC , the genotype is abcc;

[0032] 3) Plant F in the diseased area of ​​the field 1ABC The seeds, the population is 2800, select the plants with no disease...

Embodiment 3

[0038] 1) Select heat-resistant rice variety A, waterlogging-tolerant rice variety B and rice blast-resistant rice variety C as parents, and make hybrids A / C and B / C to obtain hybrid F1 generation, denoted as F 1AC and F 1BC , in which, the genotype of rice variety A with high temperature resistance is aa, the genotype of rice variety B with waterlogging tolerance is bb, the genotype of rice variety C with high blast resistance is cc, and the genotype of F 1AC The genotype is ac and F 1BC The genotype of the rice is bc, the high temperature resistant rice variety A is Wuyunjing 21, the waterlogging tolerant rice variety B is Heiyou 1, and the high blast resistant rice variety C is Liaojing 92;

[0039] 2) put F 1AC with F 1BC Hybridization is carried out to obtain the recrossed F1 generation, which is recorded as F 1ABC , the genotype is abcc;

[0040] 3) Plant F in the diseased area of ​​the field 1ABC The seeds, the population is 3000, select the plants with no disease...

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Abstract

The invention discloses a breeding method used for a two-line sterile line of Southeast Asia hybrid rice. The breeding method comprises the following steps: selecting a high-temperature-resistant ricevariety A, a waterlogging-resistant rice variety B and a rice variety C with high rice blast resistance as a parent, performing hybridization A / C and B / C, thereby obtaining a hybrid F1 generation which is recorded as F1AC and F1BC, wherein the gene type of the high-temperature-resistant rice variety A is aa, the gene type of the waterlogging-resistant rice variety B is bb, the gene type of the rice variety C with high rice blast resistance is cc, the gene type of F1AC is ac, and the gene type of F1BC is bc. The breeding method adopts the high-temperature-resistant rice variety A, the waterlogging-resistant rice variety B and the rice variety C with high rice blast resistance to hybrid and backcross, to hybrid with a low-temperature-sensitive two-line sterile line to select out two sterilelines, namely the high-temperature-resistant disease-resistant line and the waterlogging-resistant disease-resistant line, which are suitable for being planted under different weather conditions of different Southeast Asia regions, so that the range of application is wide.

Description

technical field [0001] The invention relates to the technical field of rice breeding, in particular to a method for breeding two-line sterile lines of hybrid rice in Southeast Asia. Background technique [0002] Rice cultivation is mainly concentrated in Asia. Vietnam mainly imports hybrid rice seeds from China. India started rice research at the same time as my country. Other countries also pay attention to the research, introduction and promotion of hybrid rice to varying degrees, but the level is still far behind that of my country, and the results are not high. China leads the world in hybrid rice seed production technology, but due to its biological characteristics, its applicability is not wide, and the scale of export trade has increased slowly, which has not demonstrated my country's technological advantages. Therefore, it is an important trend for future development to establish and improve the operation mode and mechanism of hybrid rice breeding, propagation and p...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/02A01H1/04
Inventor 黄蓉黎方仁刘迎霞
Owner ANHUI HUARUN BIOTECH
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