Breeding method and application of corn haploid induction line

A haploid inducible line and the technology of the inducible line are applied in the field of crops, which can solve the problems of unfavorable haploid grain selection, unsuitable haploid young embryos, and light color of endosperm, and achieve good pollen vigor and young embryos. The effect of early color and good comprehensive traits
CN113455378AInactive Publication Date: 2021-10-01北大荒垦丰种业股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北大荒垦丰种业股份有限公司
Publication Date
2021-10-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of crops, particularly relates to a breeding method and application of a corn haploid induction line, and mainly discloses the breeding method for breeding the corn haploid induction line. The breeding method for breeding the corn haploid induction line comprises the following steps of hybridizing a haploid induction line in a corn resource library with a material with a purple early immature embryo, performing multi-generation backcross, and selfing to obtain the corn haploid induction line. The method can be used for rapidly breeding the corn haploid induction line which is good in comprehensive character, high in induction rate and suitable for haploid early-stage immature embryo selection.
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Description

technical field

[0001] The invention belongs to the field of crops, and in particular relates to a method for breeding a maize haploid induction line and its application. Background technique

[0002] The creation and selection of inbred lines is the core of maize hybrid breeding. Conventional hybridization and multiple rounds of backcrossing methods require six generations of backcrossing and two generations of selfing for a total of eight generations to obtain a stable inbred line with a homozygous rate higher than 99%. , It takes several years, the cost is high, and the cycle is long. The maize haploid doubling technology developed in recent years, by crossing the pollen of the haploid inducing line with high-quality genetic resource materials, some of the offspring produced are induced to become haploid, and then these haploid embryos germinate and become seedlings in specific conditions. stage with colchicine and other cell division inhibitors to induce chromosome doub...

Claims

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