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Density test method for new corn variety breeding

An experimental method, a new variety of technology, applied in the direction of botany equipment and methods, application, plant gene improvement, etc., can solve the problems of affecting the test accuracy, increasing soil error, and expanding the error, so as to enrich the test content and reduce the test error , the effect of improving the accuracy

Inactive Publication Date: 2015-04-01
BEIJING UNIV OF AGRI
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AI Technical Summary

Problems solved by technology

Due to the large number of varieties involved in the test, the many treatments of the density test, and the need to set repetitions, the area of ​​the test land and the consumables will increase, and the error caused by the soil will increase; not comprehensive
In the traditional two-factor experiment of corn variety (A) and density (B), three repetitions are set up, and a total of A×B×3 test plots are required. With the increase of the test variety and density treatment level, the number of test plots will increase rapidly. The disadvantages of the increase are: the required test land increases, and the cost increases; the cost of manpower and material resources increases rapidly; the error caused by the difference between the test lands will also expand, affecting the test accuracy

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  • Density test method for new corn variety breeding
  • Density test method for new corn variety breeding
  • Density test method for new corn variety breeding

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Experimental program
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Effect test

Embodiment 1

[0026] Common experimental plan: Take 8 varieties, 5 density treatments, and repeat three times as an example. A total of 120 test plots are needed, and each test plot is 30 square meters (5 row plots, each row is 0.6 meters wide and 10 meters long). The test area is 120*30=3600 square meters, approximately equal to 5.4 mu. In the future, 15 experimental plots will be added for each additional variety.

[0027] Adopt experimental method of the present invention: with 8 kinds, 5 density processes, repeat three times as example, only need 24 test quarters, and area is 24*30=720 square meters, is equal to 1.08 mus approximately, as figure 1 The layout shown, specifically includes the following steps:

[0028] 1) Do single-factor corn variety with repeated randomized block test design;

[0029] 2) Each planting row in each test area is planted in a descending number sequence, and the plant spacing is gradually dense. The plant spacing is gradually reduced by 0.5cm-1cm, and the c...

Embodiment 2

[0036] From 2013 to 2014, it was carried out at the experimental site of Beijing Agricultural College in Changping, Beijing. The plot is north-south, 30 square meters, and the planting diagram of waxy corn in each plot is shown in Table 1:

[0037] Table 1 Planting diagram of waxy maize in each plot

[0038]

[0039] The field serial number is the random block number, N is the number of repetitions, the first plant-to-plant distance in each row is 46cm, and the last plant-to-plant distance is 13cm. There are 34 plants in a row length of 10m, which can be divided into 5 sections with a row length of 2m. The density of the section is: 2223 plants / 667m 2 , 2779 plants / 667m 2 , 3335 plants / 667m 2 , 3890 plants / 667m 2 , 6114 plants / 667m 2 , taking the ear fresh weight of waxy corn as an example, the statistics are shown in Table 2:

[0040] Table 2 Statistical table of fresh weight of corn ears

[0041]

[0042] The statistical analysis of ear fresh weight is as follow...

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Abstract

The invention discloses a density test method for new corn variety breeding. The method specifically comprises the following steps: carrying out single-factor randomized block test design on repeated corn varieties; carrying out plant spacing gradually dense bunch planting on each planting row according to a decreasing sequence in each test site; carrying out directional planting in each hole to achieve that the unfolding directions of corn leaf surfaces are identical and are vertical to the directions of ridges; investigating the agronomic traits and yields plant by plant in the test plots and making position marks, and making position marks as well in plant laboratory tests; equally dividing the test plots into a plurality of sections according to the length of the test plots after the tests are finished and working out the planting density; carrying out two-factor randomized block variance analysis to obtain the test results. Compared with traditional methods, the method has the advantages that the test land area is reduced; the test precision is improved; the drain on manpower and material resources is reduced; the test contents are enriched.

Description

technical field [0001] The invention belongs to the technical field of breeding of new varieties of plants, and in particular relates to a density experiment method for breeding of new varieties of corn. Background technique [0002] Corn variety yield ratio test, regional test, and density test are essential technical links in the breeding of new corn varieties and the promotion and cultivation of varieties. Due to the large number of varieties involved in the test, the many treatments of the density test, and the need to set repetitions, the area of ​​the test land and the consumables will increase, and the error caused by the soil will increase; Not comprehensive. In the traditional two-factor experiment of corn variety (A) and density (B), three repetitions are set up, and a total of A×B×3 test plots are required. With the increase of the test variety and density treatment level, the number of test plots will increase rapidly. The disadvantages of the increase are: the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01H1/04
Inventor 孙祎振郭蓓于同泉康恩宽玛依努尔
Owner BEIJING UNIV OF AGRI
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