CN113826520A - Method for screening stable-yield wheat varieties with strong tolerance - Google Patents
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Abstract
The invention discloses a method for screening stable-yield wheat varieties with strong tolerance, which comprises the steps of planting according to a wheat planting method, carrying out data acquisition during the planting period, and collecting the germination percentage Fij, the yield per unit Dij, the number of ears Cij and the number of ears Lij of all wheat; then, carrying out centralized analysis on the acquired data, and calculating a production evaluation value Pij according to a related algorithm to obtain three groups of rows of all the planting field groups, wherein the three groups of rows comprise three groups, namely one row, three groups and nine rows; preliminarily obtaining a primary seed group by the above method, and sequentially dividing the seeds into specially selected seeds, over-selected seeds and biased seeds according to the occurrence frequency of each seed; these seeds can be adapted to different environments.
Description
Technical Field
The invention belongs to the field of wheat variety screening, relates to stable-yield wheat, and particularly relates to a stable-yield wheat variety screening method with strong tolerance.
Background
The patent with publication number CN105104180A discloses a drought-tolerant wide-adaptability stable-yield wheat variety screening method, belonging to the technical field of wheat planting; the method comprises the steps of continuously planting in the field under the condition of natural rainfall, analyzing the yield of the wheat variety and the annual variation of yield forming factors, and screening the dry land wheat variety with strong drought resistance, small annual variation of yield and good stable yield; the method disclosed by the invention completely depends on the wheat yield and the variation coefficient C.V formed by the wheat yield under 3 rainfall years of natural rainfall to evaluate the drought resistance, the universality and the stable yield of the variety, the variation coefficient C.V reflects the dispersion degree of data so as to eliminate the yield and the difference formed by the yield of only one year, and the identification reliability is high.
However, the method can not achieve targeted screening aiming at different land conditions, can not evaluate the comprehensive adaptability of the wheat varieties in different environments, and can provide different evaluations according to the adaptive conditions.
Disclosure of Invention
The invention aims to provide a method for screening stable-yield wheat varieties with strong tolerance.
The purpose of the invention can be realized by the following technical scheme:
a method for screening stable-yield wheat varieties with strong tolerance specifically comprises the following steps:
1) planting according to a wheat planting method, and performing data acquisition during the planting period, wherein the data acquisition method specifically comprises the following steps:
s1: acquiring the germination rates of all wheat, and marking the germination rates as Fij, i-1, i-9, j-1, i-n; expressing the germination rate of the corresponding wheat j in the ith plot;
s2: then acquiring a yield value corresponding to each block of different seeds, and marking the yield values of all the wheat seeds as Dij, i-1, 9, j-1, i-n; dij is expressed as the yield per unit of the corresponding wheat j in the ith plot;
s3: acquiring the spike number and the spike grain number of different seeds corresponding to each block, and sequentially marking the spike number and the spike grain number as Cij and Lij, wherein i is 1, 9, j is 1, n; cij, Lij, Dij and Fij are all in one-to-one correspondence;
2) carrying out centralized analysis on the collected data, wherein the specific steps of the centralized analysis are as follows:
SS 1: obtaining the planting fields in the corresponding planting field group by changing i to 1; all the seeds planted in the planting field, C1j, L1j, D1j and F1j, j 1, 1.., n, are then obtained;
SS 2: and then calculating a product evaluation value P1j according to a formula, wherein the specific calculation formula is as follows:
P1j＝0.16*C1j+0.2*L1j+0.43*D1j+0.21*F1j；
SS 3: after all the production evaluation values P1j are obtained, the production evaluation values are arranged in a descending order, the first three seeds are taken and marked as three rows and one row;
SS 4: adding one to the value of i, repeating the steps SS1-SS4, obtaining a production evaluation value P2j of the next plot, and marking the seeds of the first three plots as three columns and two columns;
SS 5: repeating the step SS4 to obtain three groups of all the planting field groups, wherein the three groups comprise one group of three groups to nine groups of three groups;
SS 6: marking the seeds appearing in the three groups as a primary selection group, wherein the primary selection group is all the seeds in the three groups;
SS 7: then obtaining the occurrence frequency of each seed in the initially selected group, marking the seeds with the frequency exceeding X1 as specially selected seeds, marking the seeds with the frequency exceeding X2 but less than X1 as over-selected seeds, and biasing the rest marks to the seeds;
SS 8: and marking the conditions of the drought degree and the eutrophication degree of the planting land corresponding to the biased seeds as biased environment.
Further, before performing step 1), the following steps are also performed:
1) selecting experimental wheat varieties, namely several types of wheat for alternative tests;
2) selecting an experimental field;
3) acquiring all varieties of wheat seeds, and marking the wheat seeds as wheat seed groups Mj, j 1, j, n, and Mj as the wheat seeds with n groups;
4) selecting the reference varieties, wherein the seeds are full and have no grains with the purity of more than 99.0 percent and the purity of more than 99 percent, and the germination rate of each variety is determined before sowing and is higher than 90 percent;
5) after the planting land groups are set, dividing all the seeds of the wheat seed group Mj into nine parts, planting the nine parts into corresponding planting lands, and completely planting the wheat seed group Mj; when the wheat seeds are planted in the same planting land, different wheat seeds in the wheat seed group Mj maintain the same planting environment.
Further, the mode of specifically selecting the experimental field in the step 2) is as follows:
the method comprises the following steps: selecting from two aspects of drought degree and eutrophication degree, wherein the drought degree is judged from the environmental humidity of wheat growth, and the environmental humidity is defined;
step two: acquiring the lowest environmental humidity and the highest environmental humidity of all the wheat during culture, and sequentially marking the lowest environmental humidity and the highest environmental humidity as a bottom limit humidity and a high limit humidity; then calculating the average value between the bottom limit humidity and the top limit humidity, and marking the value as a median value;
step three: then, marking the mean value between the bottom limit humidity and the division median value as a first division value, and marking the range from the bottom limit humidity to the first division value as a bottom division range;
step four: then marking the mean value between the upper limit humidity and the divided median value as a second divided line value, and marking the range from the second divided line value to the upper limit humidity as an upper range; meanwhile, marking the range from the first branching value to the second branching value as a conventional range, wherein the conventional range does not comprise end point values;
step five: marking the humidity of the bottom division range as a dry land range, marking the conventional range as a suitable land range, and marking the upper division range as a wetland range;
step six: then judging the eutrophication degree, and setting a low-nutrition range, a proper-nutrition range and a super-nutrition range;
step seven: and (3) arranging and combining the dry land range, the suitable land range and the wet land range with the low nutrition range, the suitable nutrition range and the super nutrition range to obtain nine kinds of arrangement, and obtaining nine kinds of lands, wherein the lands are marked as planting land groups Zi, i-1, i-9.
Further, the yield per unit in step S1 is the yield of different seeds in a unit planting area, where the unit planting area is the minimum planting area set by the user, and the yield is the weight value of the flour produced by the wheat planted in the unit planting area.
Further, the ambient humidity in the step one is specifically defined as:
acquiring the air humidity, the soil humidity and the average rainfall of a culture place where the wheat is cultured, wherein the average rainfall refers to the rainfall of each rainfall in the period from the sowing of the wheat to the germination and the final maturation, and calculating the average value;
then, the environmental humidity is obtained by means of a formula, wherein the specific calculation formula is as follows:
ambient humidity 0.34 air humidity +0.51 soil humidity +0.15 average rainfall.
Further, the nutrient enrichment value in the sixth step is obtained by accumulating a plurality of nutrient components after multiplying the nutrient components by a preset weight, wherein the nutrient components are the content of each nutrient component in the preset land; obtaining the nutrient-rich value of the wheat culture according to calculation; the eutrophic degree is respectively set to be in a low-nutrition range, a proper-nutrition range and a super-nutrition range according to preset values.
The invention has the beneficial effects that:
the method comprises the steps of firstly planting according to a wheat planting method, collecting data during planting, and collecting the germination percentage Fij, the yield per unit Dij, the number of ears Cij and the number of grains per ear Lij of all wheat; then, carrying out centralized analysis on the acquired data, and calculating a production evaluation value Pij according to a related algorithm to obtain three groups of rows of all the planting field groups, wherein the three groups of rows comprise three groups, namely one row, three groups and nine rows;
preliminarily obtaining a primary seed group by the above method, and sequentially dividing the seeds into specially selected seeds, over-selected seeds and biased seeds according to the occurrence frequency of each seed; the seeds can adapt to different environments and can obtain seeds with strong comprehensive tolerance capability, thereby realizing comprehensive screening of wheat varieties.
Detailed Description
A method for screening stable-yield wheat varieties with strong tolerance specifically comprises the following steps:
1) selecting experimental wheat varieties, namely several types of wheat for alternative tests;
2) selecting an experimental field, wherein the specific selection mode is as follows:
the method comprises the following steps: selecting from two aspects of drought degree and eutrophication degree, wherein the drought degree is judged from the environmental humidity of wheat growth, and firstly, defining the environmental humidity, specifically:
acquiring the air humidity, the soil humidity and the average rainfall of a culture place where the wheat is cultured, wherein the average rainfall refers to the rainfall of each rainfall in the period from the sowing of the wheat to the germination and the final maturation, and calculating the average value;
then, the environmental humidity is obtained by means of a formula, wherein the specific calculation formula is as follows:
ambient humidity 0.34 air humidity +0.51 soil humidity +0.15 average rainfall;
in the formula, 0.34, 0.51 and 0.15 are all preset weights for highlighting the importance degree of different factors, note that the environmental humidity here is a concept specific to the application, in the formula, each factor is calculated after removing dimensions, and the result here is only a numerical value;
step two: acquiring the lowest environmental humidity and the highest environmental humidity of all the wheat during culture, and sequentially marking the lowest environmental humidity and the highest environmental humidity as a bottom limit humidity and a high limit humidity; then calculating the average value between the bottom limit humidity and the top limit humidity, and marking the value as a median value;
step three: then, marking the mean value between the bottom limit humidity and the division median value as a first division value, and marking the range from the bottom limit humidity to the first division value as a bottom division range;
step four: then marking the mean value between the upper limit humidity and the divided median value as a second divided line value, and marking the range from the second divided line value to the upper limit humidity as an upper range; meanwhile, marking the range from the first branching value to the second branching value as a conventional range, wherein the conventional range does not comprise end point values;
step five: marking the humidity of the bottom division range as a dry land range, marking the conventional range as a suitable land range, and marking the upper division range as a wetland range;
step six: then, judging the eutrophication degree, and defining a eutrophication value, wherein the eutrophication value is obtained by multiplying a plurality of nutrient components by a preset weight and then accumulating, and the plurality of nutrient components are the content of each nutrient component in the preset land; obtaining the nutrient-rich value of the wheat culture according to calculation; setting the eutrophic degree into a low-nutrition range, a proper-nutrition range and a super-nutrition range according to preset values;
step seven: arranging and combining the dry land range, the suitable land range and the wet land range with the low nutrition range, the suitable nutrition range and the super nutrition range to obtain nine kinds of arrangement to obtain nine kinds of lands, and marking the lands as planting land groups Zi, i.e. 1, 1.
3) Acquiring all varieties of wheat seeds, and marking the wheat seeds as wheat seed groups Mj, j 1, j, n, and Mj as the wheat seeds with n groups;
4) selecting the reference varieties, wherein the seeds are full and have no grains with the purity of more than 99.0 percent and the purity of more than 99 percent, and the germination rate of each variety is determined before sowing and is higher than 90 percent;
5) after the planting land groups are set, dividing all the seeds of the wheat seed group Mj into nine parts, planting the nine parts into corresponding planting lands, and completely planting the wheat seed group Mj; when the wheat seeds are planted in the same planting land, the same planting environment is kept when different wheat seeds in the wheat seed group Mj are planted;
6) planting according to a wheat planting method, and performing data acquisition during the planting period, wherein the data acquisition method specifically comprises the following steps:
s1: acquiring the germination rates of all wheat, and marking the germination rates as Fij, i-1, i-9, j-1, i-n; expressing the germination rate of the corresponding wheat j in the ith plot;
s2: then acquiring a unit yield value corresponding to different seeds in each land, wherein the unit yield value is the yield of the corresponding different seeds in a unit planting area, the unit planting area is the minimum planting area set by a user, the yield is the weight value of flour produced by wheat planted in the corresponding unit planting area, and the unit yield values of all the wheat seeds are marked as Dij, i is 1, 9, j is 1, n; dij is expressed as the yield per unit of the corresponding wheat j in the ith plot;
s3: acquiring the spike number and the spike grain number of different seeds corresponding to each block, and sequentially marking the spike number and the spike grain number as Cij and Lij, wherein i is 1, 9, j is 1, n; cij, Lij, Dij and Fij are all in one-to-one correspondence;
7) carrying out centralized analysis on the collected data, wherein the specific steps of the centralized analysis are as follows:
SS 1: obtaining the planting fields in the corresponding planting field group by changing i to 1; all the seeds planted in the planting field, C1j, L1j, D1j and F1j, j 1, 1.., n, are then obtained;
SS 2: and then calculating a product evaluation value P1j according to a formula, wherein the specific calculation formula is as follows:
P1j＝0.16*C1j+0.2*L1j+0.43*D1j+0.21*F1j；
in the formula, 0.16, 0.2, 0.43 and 0.21 are all preset weights for reflecting different influences of different factors;
SS 3: after all the production evaluation values P1j are obtained, the production evaluation values are arranged in a descending order, the first three seeds are taken and marked as three rows and one row; the first three names are only one implementation condition, and other numerical values can be taken according to specific conditions;
SS 4: adding one to the value of i, repeating the steps SS1-SS4, obtaining a production evaluation value P2j of the next plot, and marking the seeds of the first three plots as three columns and two columns;
SS 5: repeating the step SS4 to obtain three groups of all the planting field groups, wherein the three groups comprise one group of three groups to nine groups of three groups;
SS 6: marking the seeds appearing in the three groups as a primary selection group, wherein the primary selection group is all the seeds in the three groups;
SS 7: then obtaining the occurrence frequency of each seed in the initially selected group, marking the seeds with the frequency exceeding X1 as specially selected seeds, marking the seeds with the frequency exceeding X2 but less than X1 as over-selected seeds, and biasing the rest marks to the seeds; x1 and X2 are preset values;
SS 8: marking the conditions of the drought degree and the eutrophication degree of the planting land corresponding to the biased seeds as biased environments;
8) the selected specially selected seeds are high-quality seeds, have super strong adaptability and can stably produce in extreme environments; the selected seeds are seeds which can adapt to partial environment reluctantly, and the biased seeds are planted in a special single biased environment;
9) and finishing screening.
The working principle of the invention is as follows: firstly, planting according to a wheat planting method, acquiring data during planting, and collecting the germination percentage Fij, the yield per unit Dij, the number of ears Cij and the number of grains per ear Lij of all wheat; then, carrying out centralized analysis on the acquired data, and calculating a production evaluation value Pij according to a related algorithm to obtain three groups of rows of all the planting field groups, wherein the three groups of rows comprise three groups, namely one row, three groups and nine rows;
preliminarily obtaining a primary seed group by the above method, and sequentially dividing the seeds into specially selected seeds, over-selected seeds and biased seeds according to the occurrence frequency of each seed; the seeds can adapt to different environments and can obtain seeds with strong comprehensive tolerance capability, thereby realizing comprehensive screening of wheat varieties.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (7)
1. A method for screening stable-yield wheat varieties with strong tolerance is characterized by specifically comprising the following steps:
1) planting according to a wheat planting method, and performing data acquisition during the planting period, wherein the data acquisition method specifically comprises the following steps:
s1: acquiring the germination rates of all wheat, and marking the germination rates as Fij, i-1, i-9, j-1, i-n; expressing the germination rate of the corresponding wheat j in the ith plot;
s2: then acquiring a yield value corresponding to each block of different seeds, and marking the yield values of all the wheat seeds as Dij, i-1, 9, j-1, i-n; dij is expressed as the yield per unit of the corresponding wheat j in the ith plot;
s3: acquiring the spike number and the spike grain number of different seeds corresponding to each block, and sequentially marking the spike number and the spike grain number as Cij and Lij, wherein i is 1, 9, j is 1, n; cij, Lij, Dij and Fij are all in one-to-one correspondence;
2) carrying out centralized analysis on the collected data, wherein the specific steps of the centralized analysis are as follows:
SS 1: obtaining the planting fields in the corresponding planting field group by changing i to 1; then acquiring C1j, L1j, D1j and F1j of all the seeds planted in the planting field, wherein j is 1, n;
SS 2: and then calculating a product evaluation value P1j according to a formula, wherein the specific calculation formula is as follows:
P1j＝0.16*C1j+0.2*L1j+0.43*D1j+0.21*F1j；
SS 3: after all the production evaluation values P1j are obtained, the production evaluation values are arranged in a descending order, the first three seeds are taken and marked as three rows and one row;
SS 4: adding one to the value of i, repeating the steps SS1-SS4, obtaining a production evaluation value P2j of the next plot, and marking the seeds of the first three plots as three columns and two columns;
SS 5: repeating the step SS4 to obtain three groups of all the planting field groups, wherein the three groups comprise one group of three groups to nine groups of three groups;
SS 6: marking the seeds appearing in the three groups as a primary selection group, wherein the primary selection group is all the seeds in the three groups;
SS 7: then obtaining the occurrence frequency of each seed in the initially selected group, marking the seeds with the frequency exceeding X1 as specially selected seeds, marking the seeds with the frequency exceeding X2 but less than X1 as over-selected seeds, and biasing the rest marks to the seeds;
SS 8: and marking the conditions of the drought degree and the eutrophication degree of the planting land corresponding to the biased seeds as biased environment.
2. The method for screening the stable yield wheat variety with strong tolerance according to claim 1, wherein the following steps are carried out before the step 1):
SSS 1: selecting experimental wheat varieties, namely several types of wheat for alternative tests;
SSS 2: selecting an experimental field;
SSS 3: acquiring all varieties of wheat seeds, and marking the wheat seeds as wheat seed groups Mj, j 1, j, n, and Mj as the wheat seeds with n groups;
SSS 4: selecting the reference varieties, wherein the seeds are full and have no grains with the purity of more than 99.0 percent and the purity of more than 99 percent, and the germination rate of each variety is determined before sowing and is higher than 90 percent;
SSS 5: after the planting land groups are set, dividing all the seeds of the wheat seed group Mj into nine parts, planting the nine parts into corresponding planting lands, and completely planting the wheat seed group Mj; when the wheat seeds are planted in the same planting land, different wheat seeds in the wheat seed group Mj maintain the same planting environment.
3. The method for screening the stable yield wheat variety with strong tolerance according to claim 2, wherein the mode of specifically selecting the experimental field in the step SSS2 is as follows:
the method comprises the following steps: selecting from two aspects of drought degree and eutrophication degree, wherein the drought degree is judged from the environmental humidity of wheat growth, and the environmental humidity is defined;
step two: acquiring the lowest environmental humidity and the highest environmental humidity of all the wheat during culture, and sequentially marking the lowest environmental humidity and the highest environmental humidity as a bottom limit humidity and a high limit humidity; then calculating the average value between the bottom limit humidity and the top limit humidity, and marking the value as a median value;
step three: then, marking the mean value between the bottom limit humidity and the division median value as a first division value, and marking the range from the bottom limit humidity to the first division value as a bottom division range;
step four: then marking the mean value between the upper limit humidity and the divided median value as a second divided line value, and marking the range from the second divided line value to the upper limit humidity as an upper range; meanwhile, marking the range from the first branching value to the second branching value as a conventional range, wherein the conventional range does not comprise end point values;
step five: marking the humidity of the bottom division range as a dry land range, marking the conventional range as a suitable land range, and marking the upper division range as a wetland range;
step six: then judging the eutrophication degree, and setting a low-nutrition range, a proper-nutrition range and a super-nutrition range;
step seven: and (3) arranging and combining the dry land range, the suitable land range and the wet land range with the low nutrition range, the suitable nutrition range and the super nutrition range to obtain nine kinds of arrangement, and obtaining nine kinds of lands, wherein the lands are marked as planting land groups Zi, i-1, i-9.
4. The method for screening the stable yield wheat variety with strong tolerance according to claim 1, wherein the yield per unit in the step S1 is the yield of different seeds in a unit planting area.
5. The method for screening the stable yield wheat varieties with strong tolerance as claimed in claim 4, wherein the unit planting area is the minimum planting area set by a user, and the yield is the weight value of the flour produced by the wheat planted in the corresponding unit planting area.
6. The method for screening the stable yield wheat variety with strong tolerance according to claim 3, wherein the environmental humidity in the step one is defined as follows:
acquiring the air humidity, the soil humidity and the average rainfall of a culture place where the wheat is cultured, wherein the average rainfall refers to the rainfall of each rainfall in the period from the sowing of the wheat to the germination and the final maturation, and calculating the average value;
then, the environmental humidity is obtained by means of a formula, wherein the specific calculation formula is as follows:
ambient humidity 0.34 air humidity +0.51 soil humidity +0.15 average rainfall.
7. The method for screening the stable yield wheat variety with strong tolerance according to claim 3, wherein the nutrient enrichment value in the sixth step is obtained by adding a plurality of nutrient components after multiplying the nutrient components by a preset weight, wherein the nutrient components are the content of each nutrient component in a preset land; obtaining the nutrient-rich value of the wheat culture according to calculation; the eutrophic degree is respectively set to be in a low-nutrition range, a proper-nutrition range and a super-nutrition range according to preset values.
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| PCT/CN2022/080326 WO2023050728A1 (en) | 2021-09-30 | 2022-03-11 | Method for screening wheat variety having strong tolerance and stable yield |
| ZA2022/05163A ZA202205163B (en) | 2021-09-30 | 2022-05-10 | Method for screening stable yield wheat variety with strong tolerance |
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| CN114747328A (en) * | 2022-04-08 | 2022-07-15 | 河南省农业科学院粮食作物研究所 | Screening device capable of detecting deep-sowing-resistant condition of rice germplasm |
| WO2023050728A1 (en) * | 2021-09-30 | 2023-04-06 | 五河县绿色农产品协会 | Method for screening wheat variety having strong tolerance and stable yield |
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2021
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2022
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023050728A1 (en) * | 2021-09-30 | 2023-04-06 | 五河县绿色农产品协会 | Method for screening wheat variety having strong tolerance and stable yield |
| CN114747328A (en) * | 2022-04-08 | 2022-07-15 | 河南省农业科学院粮食作物研究所 | Screening device capable of detecting deep-sowing-resistant condition of rice germplasm |
Also Published As
| Publication number | Publication date |
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| ZA202205163B (en) | 2022-11-30 |
| WO2023050728A1 (en) | 2023-04-06 |
| CN113826520B (en) | 2022-08-16 |
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