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Selfing line SSR (Simple Sequence Repeat) and phenotype information based corn hybrid combination method and system

An inbred line and combination technology, which is applied in the fields of biochemical equipment and methods, microbial determination/inspection, special data processing applications, etc., can solve the problems of lack and necessary combination of phenotypic data.

Active Publication Date: 2015-11-11
CHINA AGRI UNIV
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Problems solved by technology

[0004] Traditional hybrid breeding methods only use DNA fingerprint data, lacking the necessary combination with phenotypic data

Method used

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  • Selfing line SSR (Simple Sequence Repeat) and phenotype information based corn hybrid combination method and system
  • Selfing line SSR (Simple Sequence Repeat) and phenotype information based corn hybrid combination method and system
  • Selfing line SSR (Simple Sequence Repeat) and phenotype information based corn hybrid combination method and system

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Embodiment Construction

[0045] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are the Some, but not all, embodiments are invented. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0046] This embodiment discloses a method for combining maize hybrids based on inbred line SSR and phenotypic information, including:

[0047] S1. Standardize the preset field identification data of inbred lines;

[0048] S2. For the standardized inbred line field identification data, determine the value of the preset characteristic in each inbred line, and calculate t...

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Abstract

The invention discloses a selfing line SSR (Simple Sequence Repeat) and phenotype information based corn hybrid combination method and system. The method comprises: performing standardization treatment on preset selfing line field identification data; for the selfing line field identification data subjected to the standardization treatment, determining a value of a preset characteristic in each selfing line, and according to the value of the preset characteristic, calculating a phenotype distance of a selected hybrid line; according to the phenotype distance, determining the defect degree and superiority degree of the preset selfing line field identification data; according to the preset selfing line SSR molecular marker data, determining a value of a preset index in each selfing line; according to the value of the preset index, determining the selfing line meeting a preset condition to be subjected to hybrid combination; calculating a genetic distance of the selected hybrid line; according to the phenotype distance and the genetic distance, establishing a heterotic rate index of selected parents; calculating a reciprocal cross value SV; and according to a biparental heterotic rate MD, a mean value, defined in the specification, of biparental comprehensive values and the reciprocal cross value SV, obtaining a hybrid combination value HV.

Description

technical field [0001] The invention relates to the technical field of planting industry informatization, in particular to a method and system for maize hybridization based on inbred line SSR and phenotype information. Background technique [0002] Breeding output is a low-probability event. Only through large-scale investment can the small-probability event be transformed into an inevitable event, making the original accidental breeding output predictable and designable. Due to the lack of appropriate methods and tool support, domestic breeding teams are unable to control large-scale breeding materials and data information, and it is difficult to accumulate breeding rules such as line selection and grouping, resulting in the prevalence of empirical grouping, making my country's corn breeding output very uncertain sex. Molecular-based design breeding is considered to be an important way to improve breeding efficiency, but due to the lack of data, methods and tools, domestic ...

Claims

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Application Information

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IPC IPC(8): G06F19/20C12Q1/68
Inventor 刘哲赵祖亮张振红李绍明张晓东朱德海李林
Owner CHINA AGRI UNIV
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