Genotype Selection for Grain Yield of Sorghum through Generalized Linear Mixed Model
The classical model only provides a correct analysis if all the effects are fixed. For experiments that include fixed and random effects, the general linear mixed model is appropriate for handling the non-normal distributed response variables. The aim of this study is to perform the genotype selecti...
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| Format: | Article |
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MDPI AG
2023-03-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/3/852 |
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| author | Mulugeta Tesfa Temesgen Zewotir Solomon Assefa Derese Denekew Bitew Belay Mark Laing |
| author_facet | Mulugeta Tesfa Temesgen Zewotir Solomon Assefa Derese Denekew Bitew Belay Mark Laing |
| author_sort | Mulugeta Tesfa |
| collection | DOAJ |
| description | The classical model only provides a correct analysis if all the effects are fixed. For experiments that include fixed and random effects, the general linear mixed model is appropriate for handling the non-normal distributed response variables. The aim of this study is to perform the genotype selection through a generalized linear mixed model and identify the impact of treatment and the related traits on grain yield. The data were collected using a lattice square design and measured the phenotype traits of sorghum. The result of PCA was used as an input variable for the general linear mixed model. The data analysis was performed using a general linear mixed model with maximum likelihood methods to estimate the parameters of the model. The result showed that the grain yield had a gamma distribution and a treatment effect on grain yield. The first principal component was significant for grain yield. The variability of grain yield due to the random effects of replication within treatment, genotype, and the interaction of genotype by treatment were significant. The best genotypes effective for the mass production of sorghum were G137, G66 and G156 under stress conditions and G55, G41 and G78 under irrigated conditions. Overall, genotype selection using a general linear mixed model for grain yield is recommended for genotype selection of plant breeding. |
| first_indexed | 2024-03-11T07:02:30Z |
| format | Article |
| id | doaj.art-6228422ddca54c4e9915b3c9db744fbb |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-11T07:02:30Z |
| publishDate | 2023-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-6228422ddca54c4e9915b3c9db744fbb2023-11-17T09:07:09ZengMDPI AGAgronomy2073-43952023-03-0113385210.3390/agronomy13030852Genotype Selection for Grain Yield of Sorghum through Generalized Linear Mixed ModelMulugeta Tesfa0Temesgen Zewotir1Solomon Assefa Derese2Denekew Bitew Belay3Mark Laing4Department of Statistics, College of Science, Bahir Dar University, Bahir Dar P.O. Box 79, EthiopiaSchool of Mathematics, Statistics & Computer Science, University of KwaZulu-Natal, Durban 4041, South AfricaDepartment of Plant Breeding, College of Agriculture, Woldia University, Woldia P.O. Box 53, EthiopiaDepartment of Statistics, College of Science, Bahir Dar University, Bahir Dar P.O. Box 79, EthiopiaSchool of Agricultural, Earth and Environmental Sciences, College of Agriculture, Engineering & Science, Pietermaritzburg, University of KwaZulu-Natal, Durban 4041, South AfricaThe classical model only provides a correct analysis if all the effects are fixed. For experiments that include fixed and random effects, the general linear mixed model is appropriate for handling the non-normal distributed response variables. The aim of this study is to perform the genotype selection through a generalized linear mixed model and identify the impact of treatment and the related traits on grain yield. The data were collected using a lattice square design and measured the phenotype traits of sorghum. The result of PCA was used as an input variable for the general linear mixed model. The data analysis was performed using a general linear mixed model with maximum likelihood methods to estimate the parameters of the model. The result showed that the grain yield had a gamma distribution and a treatment effect on grain yield. The first principal component was significant for grain yield. The variability of grain yield due to the random effects of replication within treatment, genotype, and the interaction of genotype by treatment were significant. The best genotypes effective for the mass production of sorghum were G137, G66 and G156 under stress conditions and G55, G41 and G78 under irrigated conditions. Overall, genotype selection using a general linear mixed model for grain yield is recommended for genotype selection of plant breeding.https://www.mdpi.com/2073-4395/13/3/852general linear mixed modelgenotype performancerandom effectnon-normality |
| spellingShingle | Mulugeta Tesfa Temesgen Zewotir Solomon Assefa Derese Denekew Bitew Belay Mark Laing Genotype Selection for Grain Yield of Sorghum through Generalized Linear Mixed Model Agronomy general linear mixed model genotype performance random effect non-normality |
| title | Genotype Selection for Grain Yield of Sorghum through Generalized Linear Mixed Model |
| title_full | Genotype Selection for Grain Yield of Sorghum through Generalized Linear Mixed Model |
| title_fullStr | Genotype Selection for Grain Yield of Sorghum through Generalized Linear Mixed Model |
| title_full_unstemmed | Genotype Selection for Grain Yield of Sorghum through Generalized Linear Mixed Model |
| title_short | Genotype Selection for Grain Yield of Sorghum through Generalized Linear Mixed Model |
| title_sort | genotype selection for grain yield of sorghum through generalized linear mixed model |
| topic | general linear mixed model genotype performance random effect non-normality |
| url | https://www.mdpi.com/2073-4395/13/3/852 |
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