Soybean specificity test approximate variety screening method based on phenotypic distance

A phenotypic distance, similar species technology, applied in instrumentation, structured data retrieval, database design/maintenance, etc., can solve the problem of missing similar species, and achieve the effect of shortening screening time, improving pertinence, and high efficiency

Inactive Publication Date: 2019-04-12
CROP RES INST SHANDONG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problem that the above-mentioned screening method for similar varieties based on a single trait easily leads to the omission of similar varieties, the present invention provides a method for screening similar varieties based on phenotypic distance of soybean specificity testing

Method used

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  • Soybean specificity test approximate variety screening method based on phenotypic distance
  • Soybean specificity test approximate variety screening method based on phenotypic distance
  • Soybean specificity test approximate variety screening method based on phenotypic distance

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Example 1: Establishment of a database of phenotypic traits of known soybean varieties

[0022] From 2004 to 2017, the applicant conducted DUS tests on more than 700 soybean varieties in the Huanghuaihai region. Each variety is generally tested for two growth cycles. In each cycle, data is collected for all 31 traits in the test guide, and a total of more than 20,000 phenotypic traits are collected. The collected data of phenotypic traits were sorted according to the expression method and data type of the test traits. On this basis, the phenotypic traits database of soybean varieties in the Huanghuaihai region was established, and the DUS test traits data of 550 varieties were stored. The screening of similar varieties in this example is carried out based on the above-mentioned phenotypic traits database.

[0023] According to the degree to which the observed value of the expression state of each phenotypic trait is affected by the environmental conditions and the siz...

Embodiment 2

[0180] Example 2: Screening of similar soybean varieties

[0181] 1. There are 6 varieties of soybeans to be applied for, and the codes and names are shown in Table 24;

[0182] 2. Collect the trait data (Table 25) of the applied variety through one-year planting, and import it into the soybean phenotypic trait database;

[0183] 3. Set the safety distance to 2, click the "screen" button, and the database system will list a list of approximate varieties corresponding to each applied variety (Table 26, figure 1 ). Table 26 lists only approximate varieties with a phenotype distance of 0.

[0184] Table 24 Application Varieties

[0185]

[0186]

[0187] Table 25 Data collected in the first year of the application variety (expression status of each trait, that is, code value)

[0188]

[0189] Some similar varieties screened out in Table 36

[0190]

[0191] The method can automatically queue the selected similar varieties according to the phenotypic distance thr...

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Abstract

The invention discloses a soybean specificity test approximate variety screening method based on phenotypic distance. According to the method, different weights (such as a table 1) are set for code difference values of expression states according to the influence degree of environmental conditions on the expression state observation values of the phenotypic characters and the personnel observationdeviation, and the phenotypic distances between two varieties are obtained by adding the weights of all the phenotypic characters; Comparing a large number of phenotypic distances with the obvious degree of the difference between the varieties, and determining a phenotypic distance threshold: calculating the phenotypic distance between the applied variety and each known variety, and taking the known variety with the phenotypic distance smaller than the threshold as an approximate variety of the applied variety. With the adoption of the method, the influence of observation deviation, interaction and data entry errors of personnel and screening of similar varieties is well eliminated, and the preciseness of screening of the similar varieties is improved; according to the method, the nearestvariety and the applied variety can be planted adjacently during a field test, and the specificity test pertinence is improved.

Description

technical field [0001] The invention relates to a method for screening similar varieties of soybean specificity testing based on phenotype distance, and belongs to the technical field of new plant variety testing (or called DUS testing). Background technique [0002] Specificity, consistency and stability are the basic requirements for plant varieties, and are the prerequisites for new plant varieties to obtain variety rights protection, variety approval of major crop varieties and registration of non-main crop varieties. Specificity means that the variety under application should be clearly different from all known varieties of the same genus or species before the filing date. To identify a variety as having specificity, it needs to be demonstrated that the variety is phenotypically distinct from any other known variety of the same crop. There are often tens of thousands of known varieties of major crops, and it is practically impossible to compare each variety applied for...

Claims

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Application Information

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IPC IPC(8): G16B50/30G06F16/21G06F16/22
Inventor张晗李汝玉段丽丽王晖孙加梅郑永胜王玮王穆穆王雪梅李华
OwnerCROP RES INST SHANDONG ACAD OF AGRI SCI