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Breeding method of perennial rice and application

A wild rice, natural technology, applied in the field of rice genetics and breeding, can solve the problems of no production, retention, and no substantive progress, and achieve high practical significance, prevent soil erosion, and simplify rice production and management methods Effect

Inactive Publication Date: 2017-01-25
YUNNAN UNIV +1
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Problems solved by technology

However, this series of research only stays at the theoretical level, has not made substantial progress, and has not been actually used in production

Method used

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  • Breeding method of perennial rice and application
  • Breeding method of perennial rice and application

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Embodiment

[0026] 1. Breeding of perennial rice

[0027] (1) F 1 generation;

[0028] (2) The above F 1 Generation selfing and backcrossing, get F 2 and BC 1 segregating populations and offspring material;

[0029] (3) Use F 2 Generations and BC 1 Genetic analysis of isolated populations to obtain genetic loci that affect perenniality (rhizome expression and abundance), and the identified genetic loci that affect perenniality include major loci and minor loci;

[0030] Major sites include Rhz2 and Rhz3;

[0031] Minor loci include QRl1, QRbd2, QRn2, QRn3, QRn5, QRn6, QRl6, QRn7, QRl7, and QRl10;

[0032] (4) Use molecular marker-assisted selection to breed rice varieties (lines) with perennial traits, such as PR24, using progeny materials carrying perennial genetic loci as donors and cultivated rice as recipients.

[0033] 2. Perennial rice production test

[0034] The perennial rice variety PR24 carries the perennial genetic loci Rhz2 (Chr3), Rhz3 (Chr4), QRn2 (Chr2), QRbd2 (C...

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Abstract

The invention relates to a breeding method of rice with a perennial property in rice breeding and belongs to the field of rice genetics breeding. The method is a breeding method which takes oryza longistaminata as a male parent and O.sativa as a female parent to hybridize and transfers the perennial property of the oryza longistaminata to the O.sativa to breed a perennial rice (PR) variety through hybridization and back-crossing by utilizing marker assisted selection (MAS). With the adoption of the perennial rice breeding method provided by the invention, the perennial rice variety is bred, and the aim of planting the rice for one time and continuously harvesting for a plurality of years (times) can be realized.

Description

technical field [0001] The invention relates to a rice breeding method with perennial traits in rice breeding, and belongs to the field of rice genetics and breeding. Background technique [0002] In response to the problems of soil erosion and soil fertility decline caused by artificial long-term over-cultivation, in 1989 the International Rice Research Institute (IRRI) proposed the development of perennial upland rice, planting perennial upland rice on dry land to obtain grain income and at the same time achieve The dual purpose of preventing soil erosion and protecting the ecological environment. Since then, some research institutions at home and abroad have started to explore the genetic improvement of perennial rice. Perennial rice (Perennial Rice, PR), as the name suggests, is to plant a variety of rice that can be harvested continuously for many years and its production technology. Cultivated rice, which is commonly referred to as a modern improved rice variety, whe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/02A01H1/04
CPCA01H1/022
Inventor 胡凤益张石来黄立钰陶大云张静黄光福胡建道金荣
Owner YUNNAN UNIV
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