CN111340347A - Method for evaluating comprehensive quality index of rice variety - Google Patents

Method for evaluating comprehensive quality index of rice variety Download PDF

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CN111340347A
CN111340347A CN202010107617.9A CN202010107617A CN111340347A CN 111340347 A CN111340347 A CN 111340347A CN 202010107617 A CN202010107617 A CN 202010107617A CN 111340347 A CN111340347 A CN 111340347A
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刘宝海
高世伟
聂守军
刘晴
刘宇强
常汇琳
薛英会
马成
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Suihua Branch Of Heilongjiang Academy Of Agricultural Sciences
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Abstract

The invention relates to the technical field of crop genetic breeding, in particular to a comprehensive merit index evaluation method of a rice variety, which adopts an analysis method combining entropy weight and efficacy to screen and evaluate the variety goodness, solves the problems of subjectivity, one-sidedness and reliability of the rice variety evaluation method, and solves the difficulty that the multi-dimensional character requirements of variety 'good seed', 'good eating', 'good processing' matching yield, quality, stress resistance and the like are difficult to comprehensively and objectively analyze and distinguish. The implementation of this scheme mainly comprises the following steps: (1) establishing an evaluation system; (2) acquiring index data; (3) determining an index weight; (4) calculating a comprehensive index; (5) and evaluating the excellent variety.

Description

Method for evaluating comprehensive quality index of rice variety
Technical Field
The invention relates to the technical field of crop genetic breeding, in particular to a method for evaluating a comprehensive merit index of a rice variety.
Background
With the continuous and deep development of the rice industry, the rice market yield is higher than the demand, and the market income maximization requirements of various economic subjects such as rice planting, processing and consumption are greatly enhanced, so that new and higher requirements on the excellent characteristic characteristics of varieties are provided. In recent years, the number of approved varieties of rice is increased year by year, how to screen good varieties, good eating and good processing which meet the requirements of various economic subjects from a large number of approved varieties or seedling head strains becomes a new research topic in the process of judging whether the varieties are suitable for being used as breeding parents and large-area planting popularization, so that correct decisions must be made on the advantages and disadvantages of multi-dimensional index characters such as yield, quality, resistance and the like of the varieties, and the comprehensive excellent index is used as an important application of variety screening, is beneficial to discovering the advantages and the disadvantages of the varieties, realizes the objective, comprehensive and accurate presentation of the comprehensive characters of the varieties, and helps breeders, growers, processing enterprises and consumers to discover the utilization potential and the use value of the varieties.
The comprehensive merit index evaluation is to calculate the multi-dimensional character indexes such as the yield, the quality, the stress resistance and the like of the variety by combining an entropy weight method and an efficacy evaluation method, can fully play the objectivity characteristic of determining the weight according to the index variation degree by the entropy weight method, avoid subjective errors, fulfill the aim of comprehensively reflecting various information, have strong operability, fully play the characteristic of evaluating by the efficacy evaluation method according to the magnitude of the comprehensive merit index of the efficacy, complete the objective sorting of the variety, have simple and convenient practicability, organically combine the two analysis methods, form complementary advantages of getting good and short, reduce the probability of occurrence of random deviation and systematic errors, provide reliable basis for the comprehensive evaluation of the multi-dimensional indexes of the variety, and enhance the accuracy of the evaluation result.
The application of the comprehensive excellent index evaluation method for the rice variety is few, some literatures are evaluated aiming at certain aspects of low fertilizer resistance, low nitrogen resistance, cold resistance, quality characters, yield characters and the like of the rice variety, multi-dimensional comprehensive evaluation of the variety characters is omitted, the possibility of overhigh evaluation or errors exists, some literatures are used for evaluating the rice variety by using analysis methods such as principal components, clustering, weight projection models, four-way connection coefficient multi-factor situation sequencing, fuzzy comprehensive evaluation, DTOPSIS and gray correlation, and the like, but the problems of one-sidedness, instability of a single evaluation method and the effectiveness of a combined evaluation method exist, so that the accuracy of an evaluation result is influenced, and the efficient excavation and utilization of the excellent variety are difficult to guarantee.
Disclosure of Invention
The invention aims to overcome the technical problems and provides a comprehensive merit index evaluation method for rice varieties.
The technical scheme for solving the technical problems is as follows:
a comprehensive excellent index evaluation method for rice varieties adopts an analysis method combining entropy weight and efficacy to screen and evaluate the comprehensive excellent performance of the rice varieties, and is shown in a table 1:
TABLE 1 selection of comprehensive quality index evaluation system for varieties
Figure BDA0002388918580000021
Note: "… …" represents an unlisted trait index.
The method comprises the following steps:
1) establishing an evaluation system:
establishing a target layer, a criterion layer and an index layer according to four basic principles of scientificity, comprehensiveness, effectiveness and operability, and explaining positive and negative benefits and a measuring method of each index of the index layer;
the criterion layer comprises variety yield, quality and stress resistance;
the index layer comprises the characters of effective tiller number, gum consistency, neck blast morbidity index and the like;
2) acquiring index data:
planting a test rice variety in a corresponding ecological test area, and acquiring and calculating index data according to the requirement of an evaluation system; namely:
planting in corresponding ecological regions according to growth period characteristics of the tested varieties and a method of ' the agricultural industry standard of the people's republic of China (NY/T1300-2007) technical specification rice for regional test of crop varieties ';
then according to the test guidelines of specificity, consistency and stability of new plant species of the State quality and technology administration, namely rice [ M ], Beijing Chinese agriculture publishing agency (2007) and the national standards of the people's republic of China (GB/T17891-1999) high-quality rice and the agricultural industry standard (NY147-88) determination of rice quality, and by combining with a related universal method, index data collection and calculation are carried out on the varieties to be tested;
3) determining the index weight:
calculating and obtaining each index weight coefficient according to an entropy weight analysis method;
the calculation method of the entropy weight analysis method comprises the following steps of assuming that m evaluation objects and n evaluation indexes are given, establishing an original data matrix of each evaluation index, and expressing the matrix by a following formula ①:
①X＝{xij}m×n(i＝1，2，3，...，m；j＝1，2，3...，n)；
in the formula, XijThe j index value represents the ith evaluation object;
the normalized data is calculated according to the following equation ②,
②
Figure BDA0002388918580000031
in the formula, PijThe comprehensive standardized value of the jth index of the ith system is shown, m is the number of evaluation units, and standardized data P is determined according to the following formula ③;
③P＝{pij}m×n(i＝1，2，3，...，m；j＝1，2，3，...，n)；
in the formula, PijIndicating the j normalized index value of the ith evaluation object;
then, calculating the information entropy of the evaluation index according to the following formula ④;
④
Figure BDA0002388918580000032
in the formula, ejEntropy of information representing the j-th index, if pijWhen 0, then
Figure BDA0002388918580000033
Calculating the weight coefficient of each index according to the following formula ⑤;
⑤
Figure BDA0002388918580000034
4) calculating a comprehensive index:
establishing an efficacy coefficient matrix, and calculating an efficacy comprehensive excellent index value;
the method for establishing the efficacy coefficient matrix is as follows:
calculating coefficient value b of membership function of each index according to the following formula ⑥ (indexes are all positive benefits) or ⑦ (indexes are all negative benefits)ij；
⑥
Figure BDA0002388918580000035
⑦
Figure BDA0002388918580000036
Thereby determining the power coefficient matrix B ═ Bij}m×n(i 1, 2, 3.., m; j 1, 2, 3.., n); in the formula, bijThe power coefficient of the jth index of the ith system is represented;
calculating an efficacy comprehensive excellent index value according to the following formula ⑧;
⑧
Figure BDA0002388918580000037
in the formula CIijDenotes the comprehensive merit index, W, of the ith system index jjRepresenting the weight of the jth index.
Editing a source code by using MATLAB (R2017a) software, calculating entropy weight, efficacy comprehensive index and the like of original data according to a formula sequence from ① to ⑧, and sequencing varieties of the temperature accumulation zones according to the calculation result.
5) Evaluation of the good variety:
and (3) evaluating the comprehensive properties of the rice varieties according to the magnitude of the comprehensive efficacy merit index value, wherein the larger the comprehensive efficacy merit index value is, the more excellent the comprehensive properties of the rice varieties are, and conversely, the smaller the comprehensive efficacy merit index value is, the worse the comprehensive properties of the rice varieties are, and screening and evaluating the rice varieties with good comprehensive properties according to the magnitude of the comprehensive efficacy merit index value.
The invention has the beneficial effects that:
the invention provides a rice variety comprehensive quality index evaluation method, which adopts an analysis method combining entropy weight and efficacy to screen and evaluate the quality of varieties, solves the problems of subjectivity, one-sidedness and reliability of the rice variety evaluation method, and is difficult to comprehensively and objectively analyze and judge the multi-dimensional character requirements of varieties such as 'good seed', 'good eating', 'good processing', matched yield, quality, stress resistance and the like, and achieves the following effects:
1) the quality degree of the rice variety can be comprehensively reflected;
2) a variety character evaluation index system which meets the needs of economic main bodies such as planting, processing and consumption to the maximum extent can be formed, and a reference basis is provided for perfecting the rice breeding thought;
3) the relation and the weight of each evaluation index can be determined, and a reference basis is provided for the selection standard of the rice breeding practical character index;
4) the variety can be evaluated in a mode of integrating the quality index value, and comprehensive objective information is provided for variety users to analyze and distinguish the quality characteristics of the variety;
5) the method can effectively avoid subjective errors and effectiveness problems, guarantee reasonable, objective, comprehensive and accurate evaluation results, has strong operability, and provides beneficial help for farmers, processing enterprises and consumers to exploit and utilize the potential and use value of rice varieties while improving the rice breeding capability of the researchers.
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The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
FIG. 1 is a flow chart of the method for evaluating the comprehensive merit index of rice varieties according to the present invention.
Detailed Description
Example 1:
as shown in fig. 1, this embodiment provides a method for evaluating comprehensive quality index of conventional japonica rice variety approved by heilongjiang province in 2009, which includes the following steps:
(1) and establishing an evaluation system. The influence of the characteristics of rice yield, quality, stress resistance and the like on the variety is combined with corresponding specific character indexes to form a comprehensive quality index evaluation system frame of the variety, and 13 indexes are formed in total, wherein 9 positive benefit indexes (the larger the better) and 4 negative benefit indexes (the smaller the better) are shown in the following table 2. TABLE 2 selection of comprehensive quality index evaluation system for varieties
Figure BDA0002388918580000051
By setting the evaluation system in table 2, the variety evaluation system for the economic subjects such as planting, processing and consumption, which are required by the characteristics such as good seed, good eating and good processing, such as yield, quality and stress resistance, can be met to the maximum extent, and a reference basis is provided for perfecting the rice breeding thought.
(2) Acquiring index data:
according to the index specification in table 2, 187 conventional japonica rice varieties approved by black dragon river province in 2018, including 60 varieties in the 1 st temperature zone, 56 varieties in the 2 nd temperature zone, 43 varieties in the 3 rd temperature zone and 28 varieties in the 4 th temperature zone, are planted in the corresponding ecological area, and each variety is planted by 10 square meters, and the collection, calculation and summary work of index data is performed.
(3) And (3) determining index weights, namely editing the source code by using MATLAB (R2017a) software according to an entropy weight analysis method, and performing entropy weight calculation on the original data according to a formula sequence from ① to ⑤ to obtain each index weight coefficient, as shown in the following table 3.
TABLE 3 weight coefficient of agronomic character index of each accumulated temperature zone variety
Heat accumulation belt Rate of brown rice Rate of polished rice Consistency of gum Amylose starch Yield of the product Daily output Accumulated temperature yield Lodging Neck blast Rate of empty shell
1 0.0003 0.0018 0.0030 0.0028 0.0035 0.0037 0.0041 0.0021 0.7144 0.2643
2 0.0003 0.0021 0.0023 0.0040 0.0025 0.0031 0.0039 0.0050 0.5320 0.4447
3 0.0012 0.0070 0.0114 0.0095 0.0215 0.0198 0.0217 0.0058 0.4649 0.4372
4 0.0005 0.0022 0.0059 0.0048 0.0073 0.0062 0.0078 0.0053 0.4900 0.4700
As can be seen from Table 3, the weight coefficients of all indexes are different, the 2 agronomic characters of neck blast and empty hull rate account for the largest weight, and the influence on the variety is shown to be the largest, the other 8 agronomic characters have different influences on the variety among temperature accumulation zones, the yield characters of the 1 st, 3 th and 4 th temperature accumulation zones have larger influence on the variety, the thousand grain weight of the 2 nd temperature accumulation zone and the amylose content character have larger influence on the variety, so that the method lays a foundation for the comprehensive excellent evaluation of the variety and provides a reference basis for the selection standard of the rice breeding practical character indexes.
(4) And (3) calculating a comprehensive index, namely establishing an efficacy coefficient matrix, editing source codes by using MATLAB (R2017a) software, and calculating and determining the index comprehensive index value according to a formula ⑧, as shown in Table 4.
TABLE 4 comprehensive merit index values and ranks of each accumulated temperature zone variety
Figure BDA0002388918580000061
Figure BDA0002388918580000071
Figure BDA0002388918580000081
As can be seen from Table 4, the varieties have differences in comprehensive merit indexes evaluated according to the efficacy coefficients, which provides comprehensive, objective and accurate information for variety users to analyze and distinguish the variety characteristics.
(5) Evaluation of the good variety: the varieties are sorted according to the comprehensive excellent index value (see table 4), and the varieties with larger comprehensive index values have better comprehensive properties, and the varieties with lower comprehensive index values have worse comprehensive properties.
The variety is evaluated through the comprehensive quality index, the quality degree of the rice variety can be comprehensively reflected, the problems of subjective error and effectiveness are effectively avoided, the evaluation result is reasonable, objective, comprehensive and accurate, and strong operability is achieved, so that the method provides beneficial help for scientific research personnel, planters, processing enterprises and consumers to innovatively exploit and utilize the potential and value of the rice variety.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications and equivalent variations of the above embodiment according to the present invention are within the scope of the present invention. Unless otherwise defined, all terms of art used in the present invention have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the present invention. Unless otherwise specifically stated, various test materials, instruments, reagents, equipment and the like used in the present invention are commercially available or can be prepared by existing methods. The used crop varieties (lines) are all the varieties (lines) which are conventionally used in the breeding field, and can be obtained in a variety resource bank or purchased in the market through national or provincial approval or technical identification.

Claims (3)

1. A method for evaluating the comprehensive quality index of rice varieties is characterized in that an analysis method combining entropy weight and efficacy is adopted to screen and evaluate the comprehensive quality performance of the rice varieties, and comprises the following steps:
1) establishing an evaluation system:
establishing a target layer, a criterion layer and an index layer according to four basic principles of scientificity, comprehensiveness, effectiveness and operability, and explaining positive and negative benefits and a measuring method of each index of the index layer;
the criterion layer comprises variety yield, quality and stress resistance;
the index layer comprises but is not limited to effective tiller number, gum consistency and neck blast pathogenesis index;
2) acquiring index data:
planting a test rice variety in a corresponding ecological test area, and acquiring and calculating index data according to the requirement of an evaluation system;
3) determining the index weight:
calculating and obtaining each index weight coefficient according to an entropy weight analysis method;
4) calculating a comprehensive index:
establishing an efficacy coefficient matrix, and calculating an efficacy comprehensive excellent index value;
5) evaluation of the good variety:
and (3) evaluating the comprehensive properties of the rice varieties according to the magnitude of the comprehensive efficacy merit index value, wherein the larger the comprehensive efficacy merit index value is, the more excellent the comprehensive properties of the rice varieties are, and conversely, the smaller the comprehensive efficacy merit index value is, the worse the comprehensive properties of the rice varieties are, and screening and evaluating the rice varieties with good comprehensive properties according to the magnitude of the comprehensive efficacy merit index value.
2. The method for evaluating the comprehensive merit index of a rice variety according to claim 1, wherein the method for calculating the entropy weight analysis method in step 3) is as follows: assuming that m evaluation objects and n evaluation indexes are given, an original data matrix X of each evaluation index is established as { X }ij}m×n(i ═ l, 2, 3.., m; j ═ 1, 2, 3.., n), according to
Figure RE-FDA0002471921190000021
Calculating normalized data, and determining normalized data P ═ Pij}m×n(i 1, 2, 3.., m; j 1, 2, 3.., n), as per
Figure RE-FDA0002471921190000022
Calculating the information entropy of the evaluation index according to
Figure RE-FDA0002471921190000023
Calculating each indexThe weight coefficient of (2).
3. The method for evaluating the comprehensive merit index of rice cultivars according to claim 2, wherein the method for establishing the efficacy coefficient matrix in step 4) comprises the following steps: according to
Figure FDA0002388918570000014
Or
Figure FDA0002388918570000015
Calculating the coefficient value b of the membership function of each indexijAnd thus determine the power coefficient matrix B ═ Bij}m×n(i 1, 2, 3.., m; j 1, 2, 3.., n), according to the above
Figure FDA0002388918570000016
And calculating the comprehensive excellent index value of the efficacy.
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CN112931102A (en) * 2020-10-28 2021-06-11 湖南杂交水稻研究中心 Method for evaluating high-temperature tolerance degree of rice variety in filling stage by using starch physicochemical indexes
CN112931102B (en) * 2020-10-28 2022-04-12 湖南杂交水稻研究中心 Method for evaluating high-temperature tolerance degree of rice variety in filling stage by using starch physicochemical indexes
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CN112034111A (en) * 2020-11-03 2020-12-04 中国农业科学院农业环境与可持续发展研究所 Method for identifying high yield and low emission of rice varieties
CN112034111B (en) * 2020-11-03 2021-02-19 中国农业科学院农业环境与可持续发展研究所 Method for identifying high yield and low emission of rice varieties

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