Dry Matter Yield Stability Analysis of Maize Genotypes Grown in Al Toxic and Optimum Controlled Environments
Breeding for Al tolerance is the most sustainable strategy to reduce yield losses caused by Al toxicity in plants. The use of rapid, cheap and reliable testing methods and environments enables breeders to make quick selection decisions. The objectives of this study were to (i) identify high dry matt...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-11-01
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| Series: | Plants |
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| Online Access: | https://www.mdpi.com/2223-7747/11/21/2939 |
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| author | Rutendo M. Zishiri Charles S. Mutengwa Aleck Kondwakwenda |
| author_facet | Rutendo M. Zishiri Charles S. Mutengwa Aleck Kondwakwenda |
| author_sort | Rutendo M. Zishiri |
| collection | DOAJ |
| description | Breeding for Al tolerance is the most sustainable strategy to reduce yield losses caused by Al toxicity in plants. The use of rapid, cheap and reliable testing methods and environments enables breeders to make quick selection decisions. The objectives of this study were to (i) identify high dry matter yielding and stable quality protein maize (QPM) lines grown under Al toxic and optimum conditions and (ii) compare the discriminating power of laboratory- and greenhouse-based testing environments. A total of 75 tropical QPM inbred lines were tested at seedling stage for dry matter yield and stability under optimum and Al toxic growing conditions across six laboratory- and greenhouse-based environments. The nutrient solution method was used for the laboratory trials, while the soil bioassay method was used for the greenhouse trials. A yield loss of 55% due to Al toxicity was observed, confirming the adverse effects of Al toxicity on maize productivity. The ANOVA revealed the presence of genetic variation among the set of genotypes used in this study, which can be exploited through plant breeding. Seventeen stable and high-yielding lines were identified and recommended. Greenhouse-based environments were more discriminating than laboratory environments. Therefore, we concluded that greenhouse environments are more informative than laboratory environments when testing genotypes for Al tolerance. |
| first_indexed | 2024-03-09T18:43:55Z |
| format | Article |
| id | doaj.art-45b37a652b3b480885a8565caa4d81ac |
| institution | Directory Open Access Journal |
| issn | 2223-7747 |
| language | English |
| last_indexed | 2024-03-09T18:43:55Z |
| publishDate | 2022-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Plants |
| spelling | doaj.art-45b37a652b3b480885a8565caa4d81ac2023-11-24T06:25:31ZengMDPI AGPlants2223-77472022-11-011121293910.3390/plants11212939Dry Matter Yield Stability Analysis of Maize Genotypes Grown in Al Toxic and Optimum Controlled EnvironmentsRutendo M. Zishiri0Charles S. Mutengwa1Aleck Kondwakwenda2Department of Agronomy, University of Fort Hare, Private Bag X1314, Alice 5700, South AfricaDepartment of Agronomy, University of Fort Hare, Private Bag X1314, Alice 5700, South AfricaDepartment of Agronomy, University of Fort Hare, Private Bag X1314, Alice 5700, South AfricaBreeding for Al tolerance is the most sustainable strategy to reduce yield losses caused by Al toxicity in plants. The use of rapid, cheap and reliable testing methods and environments enables breeders to make quick selection decisions. The objectives of this study were to (i) identify high dry matter yielding and stable quality protein maize (QPM) lines grown under Al toxic and optimum conditions and (ii) compare the discriminating power of laboratory- and greenhouse-based testing environments. A total of 75 tropical QPM inbred lines were tested at seedling stage for dry matter yield and stability under optimum and Al toxic growing conditions across six laboratory- and greenhouse-based environments. The nutrient solution method was used for the laboratory trials, while the soil bioassay method was used for the greenhouse trials. A yield loss of 55% due to Al toxicity was observed, confirming the adverse effects of Al toxicity on maize productivity. The ANOVA revealed the presence of genetic variation among the set of genotypes used in this study, which can be exploited through plant breeding. Seventeen stable and high-yielding lines were identified and recommended. Greenhouse-based environments were more discriminating than laboratory environments. Therefore, we concluded that greenhouse environments are more informative than laboratory environments when testing genotypes for Al tolerance.https://www.mdpi.com/2223-7747/11/21/2939discriminating abilityplant breedingAMMIGGE biplotseedlingsinbred lines |
| spellingShingle | Rutendo M. Zishiri Charles S. Mutengwa Aleck Kondwakwenda Dry Matter Yield Stability Analysis of Maize Genotypes Grown in Al Toxic and Optimum Controlled Environments Plants discriminating ability plant breeding AMMI GGE biplot seedlings inbred lines |
| title | Dry Matter Yield Stability Analysis of Maize Genotypes Grown in Al Toxic and Optimum Controlled Environments |
| title_full | Dry Matter Yield Stability Analysis of Maize Genotypes Grown in Al Toxic and Optimum Controlled Environments |
| title_fullStr | Dry Matter Yield Stability Analysis of Maize Genotypes Grown in Al Toxic and Optimum Controlled Environments |
| title_full_unstemmed | Dry Matter Yield Stability Analysis of Maize Genotypes Grown in Al Toxic and Optimum Controlled Environments |
| title_short | Dry Matter Yield Stability Analysis of Maize Genotypes Grown in Al Toxic and Optimum Controlled Environments |
| title_sort | dry matter yield stability analysis of maize genotypes grown in al toxic and optimum controlled environments |
| topic | discriminating ability plant breeding AMMI GGE biplot seedlings inbred lines |
| url | https://www.mdpi.com/2223-7747/11/21/2939 |
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