CN104472349A - Density test method for new corn variety breeding - Google Patents
Density test method for new corn variety breeding Download PDFInfo
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- CN104472349A CN104472349A CN201410748970.XA CN201410748970A CN104472349A CN 104472349 A CN104472349 A CN 104472349A CN 201410748970 A CN201410748970 A CN 201410748970A CN 104472349 A CN104472349 A CN 104472349A
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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
The invention belongs to new variety of plant breeding technique field, be specifically related to a kind of density experiment method of corn variety seed selection.
Background technology
The kind of corn is produced than test, regional test, density test be corn variety seed selection and variety popularization cultivation time requisite sport technique segment.Wide in variety due to what participate in the experiment, the process of density test is many, adds and needs to arrange repetition, so test land area and consumptive material strengthen, the error that soil causes strengthens; Meanwhile, the process of density test can not arrange too much, and acquired results is also comprehensive not to the utmost.Traditional corn variety (A) and density (B) two factorial experiments, three repetitions are set, need an experimental plot, A × B × 3 altogether, with the increase of tested variety and density processing horizontal, the number of experimental plot can increase rapidly, the shortcoming formed is: required practice ground increases, and cost improves; Manpower and materials cost increases rapidly; The error that difference between test soil causes also can expand, and affects test accuracy.
Therefore, exploitation corn produces than test, regional test, the new method of density test, reduces test land area, improves test accuracy, reduce drain on manpower and material resources, enriches the main idea that content of the test just becomes the seed selection of this corn variety of research and development.
Summary of the invention
For the defect that existing experimental technique exists, the present invention aims to provide a kind of density experiment method of corn variety seed selection.
The present invention realizes especially by following technical scheme:
A density experiment method for corn variety seed selection, specifically comprises the following steps:
1) doing single factor test corn variety has the randomized block experiment of repetition to design;
2) in each test region, each plantation row is spacing in the rows gradually close bunch planting plantation by decreasing sequence of numbers;
3) every cave directional planting, realizes corn blade face expansion direction consistent, and with ridge to vertical;
4) investigate economical character and output by strain in experimental plot, and do position mark; Indoor species test does position mark equally;
5) separate some sections by experimental plot length etc. after off-test, calculate planting density;
6) carry out two factor randomized blocks analysis of variance, draw result of the test.
Step (2) is specially each spacing in the rows and successively decreases successively 0.5cm ~ 1cm, and corn planting density is 3000 ~ 6000 strains/667m
2.
Step (3) is specially the large end of corn seed upwards, and small end is downward, and plumule face is capable parallel with plantation and towards consistent.
Two factors described in step (6) are density and kind.
Beneficial effect of the present invention is:
1) the disposable design realizing several planting densities of different cultivars;
2) save practice ground: as traditional two factorial experiments, 8 kinds, 5 density process, 120 required in triplicate test regions reduce to 24, are only original 1/5;
3) abundant result of the test can be obtained: as can the difference of output and economical character between control variety; Output between density and economical character difference; The interaction of each economical character between density and kind;
4) experimental error is reduced: because the different densities of design is in same test region, so decrease the error that the factors on test result of soil own causes, improve the accuracy of result of the test;
5) level of density tested can also do arbitrary adjustment after off-test, enriches content of the test;
Accompanying drawing explanation
Fig. 1 is plantation distribution map in embodiment of the present invention hillslope processes;
Fig. 2 is the fruit ear fresh weight number of times distribution scatter diagram of different cultivars in five density areas.
Embodiment
Below in conjunction with embodiment, the present invention is described further, the following stated, only to preferred embodiment of the present invention, not do other forms of restriction to the present invention, any those skilled in the art may utilize the technology contents of above-mentioned announcement to be changed to the Equivalent embodiments of equal change.Everyly do not depart from the present invention program's content, according to technical spirit of the present invention to any simple modification made for any of the above embodiments or equivalent variations, all drop in protection scope of the present invention.
Embodiment 1
Routine experimentation scheme: with 8 kinds, 5 density process are example in triplicate, need 120 experimental plots altogether, every experimental plot be 30 square metres (5 row districts, often row 0.6 meter is wide, 10 meters are long), complete test area is 120*30=3600 square metre, approximates 5.4 mu.Often increase a kind later and will increase by 15 experimental plots.
Adopting experimental technique of the present invention: with 8 kinds, 5 density process, is example in triplicate, and only need 24 experimental plots, area is 24*30=720 square metre, approximates 1.08 mu, as shown in Figure 1 layout, specifically comprises the following steps:
1) doing single factor test corn variety has the randomized block experiment of repetition to design;
2) in each test region, each plantation row is spacing in the rows gradually close bunch planting plantation by decreasing sequence of numbers, and each spacing in the rows is successively decreased 0.5cm ~ 1cm successively, and corn planting density is 3000 ~ 6000 strains/667m
2;
3) every cave directional planting, upwards, small end is downward for the large end of corn seed, and plumule face is capable parallel with plantation and towards consistent;
4) investigate economical character and output by strain in experimental plot, and do position mark; Indoor species test does position mark equally;
5) separate some sections by experimental plot length etc. after off-test, calculate planting density;
6) carry out density and kind two factor randomized blocks analysis of variance, draw result of the test.
The inventive method significantly reduces due to test area, and the error caused by soil and environment will significantly reduce.The input of manpower and materials also can correspondingly reduce, and benefit improves.
Embodiment 2
Within 2013 ~ 2014 years, experimental field implement in Changping County, Beijing Beijing Agricultural College.Community south-north direction, 30 square metres, the plantation signal of waxy corn each community is as table 1:
The plantation signal of table 1 waxy corn each community
Field sequence number is random district group number, and N is number of repetition, and often row first spacing in the rows is 46cm, and last spacing in the rows is 13cm, and in long upper 34 strains of the row of 10m, be one section with the capable length of 2m and can be divided into 5 sections, the density of every section is: 2223 strains/667m
2, 2779 strains/667m
2, 3335 strains/667m
2, 3890 strains/667m
2, 6114 strains/667m
2, for waxy corn fruit ear fresh weight, statistical conditions are concrete as table 2:
Table 2 corn ear fresh weight statistical form
The statistical analysis of fruit ear fresh weight is as follows:
1) investigation result of fruit ear fresh weight: the tables of data of different densities and different cultivars fruit ear fresh weight.
2) variance analysis of fruit ear fresh weight: the variance analysis table 3 calculating different cultivars fruit ear fresh weight according to table 2.
Table 3 fruit ear fresh weight variance analysis table
Drawn by table 3, between different glutinous corn varieties, the variation of fruit ear fresh weight reaches pole significance level; Density is on the impact of fruit ear fresh weight; Show as significance level, and density and interracial mutual work not remarkable on the impact of fruit ear fresh weight.
3) fruit ear fresh weight is with the interpretation of result of variable density: each kind asks the mean value in five density areas respectively, and make excell schematic diagram by this value, specifically as shown in Figure 2, the situation of change (fresh weight is g/ strain) of different densities district fruit ear fresh weight, the increase with density:
Color glutinous (from numerous): A2>A1>A3>A5Gre atT.GreaT.GTA4
Color glutinous (Hainan): A1>A4>A2>A3Gre atT.GreaT.GTA5
No. 2, Yin Nuo (J11 × Y10): A5>A4>A3>A2Gre atT.GreaT.GTA1
No. 2, Yin Nuo (Y10 × J11): A1>A2>A4>A3Gre atT.GreaT.GTA5
Yin Nuo No. 1: A1>A5>A2>A4Gre atT.GreaT.GTA3
The glutinous 2000:A1>A2>A3> A4>A5 in capital
Sweet add glutinous: A2>A1>A3>A2=A1
Super sweet: A2>A3>A1>A4Gre atT.GreaT.GTA5.
Claims (4)
1. a density experiment method for corn variety seed selection, is characterized in that, comprise the following steps:
1) doing single factor test corn variety has the randomized block experiment of repetition to design;
2) in each test region, each plantation row is spacing in the rows gradually close bunch planting plantation by decreasing sequence of numbers;
3) every cave directional planting, realizes corn blade face expansion direction consistent, and with ridge to vertical;
4) investigate economical character and output by strain in experimental plot, and do position mark; Indoor species test does position mark equally;
5) separate some sections by experimental plot length etc. after off-test, calculate planting density;
6) carry out two factor randomized blocks analysis of variance, draw result of the test.
2. the density experiment method of corn variety seed selection according to claim 1, is characterized in that: step (2) is specially each spacing in the rows and successively decreases successively 0.5cm ~ 1cm, and corn planting density is 3000 ~ 6000 strains/667m
2.
3. the density experiment method of corn variety seed selection according to claim 1, is characterized in that: step (3) is specially the large end of meter seed upwards, and small end is downward, and plumule face is capable parallel with plantation and towards consistent.
4. the density experiment method of corn variety seed selection according to claim 1, is characterized in that: two factors described in step (6) are density and kind.
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| CN201410748970.XA CN104472349A (en) | 2014-12-09 | 2014-12-09 | Density test method for new corn variety breeding |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102598967A (en) * | 2011-01-19 | 2012-07-25 | 中国农业科学院作物科学研究所 | Method for identifying density tolerance of crop variety |
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102598967A (en) * | 2011-01-19 | 2012-07-25 | 中国农业科学院作物科学研究所 | Method for identifying density tolerance of crop variety |
Non-Patent Citations (2)
| Title |
|---|
| 农垦出版社: "《猪的饲养和饲料 第二辑》", 30 June 1960, 农垦出版社 * |
| 朱明哲: "《田间试验及统计分析》", 31 May 1992, 农业出版社 * |
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Application publication date: 20150401 |
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