Relationship between grain yield and quality traits under optimum and low-nitrogen stress environments in tropical maize
Breeding for nitrogen use efficiency (NUE) is important to deal with food insecurity and its effect on grain quality, particularly protein. A total of 1679 hybrids were evaluated in 16 different trials for grain yield (GY), grain quality traits (protein, starch and oil content) and kernel weight (KW...
| Main Authors: | , , , , , , , , |
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| Format: | Journal Article |
| Language: | Inglés |
| Published: |
MDPI
2022
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10568/126529 |
| _version_ | 1855532725104017408 |
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| author | Ertiro, Berhanu Tadesse Das, Biswanath Kosgei, Titus Tarekegne, Amsal Labuschagne, Maryke T. Worku, Mosisa Olsen, Michael Chaikam, Vijay Gowda, Manje |
| author_browse | Chaikam, Vijay Das, Biswanath Ertiro, Berhanu Tadesse Gowda, Manje Kosgei, Titus Labuschagne, Maryke T. Olsen, Michael Tarekegne, Amsal Worku, Mosisa |
| author_facet | Ertiro, Berhanu Tadesse Das, Biswanath Kosgei, Titus Tarekegne, Amsal Labuschagne, Maryke T. Worku, Mosisa Olsen, Michael Chaikam, Vijay Gowda, Manje |
| author_sort | Ertiro, Berhanu Tadesse |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Breeding for nitrogen use efficiency (NUE) is important to deal with food insecurity and its effect on grain quality, particularly protein. A total of 1679 hybrids were evaluated in 16 different trials for grain yield (GY), grain quality traits (protein, starch and oil content) and kernel weight (KW) under optimum and managed low soil nitrogen fields in Kiboko, Kenya, from 2011 to 2014. The objectives of our study were to understand (i) the effect of low soil N stress on GY and quality traits, (ii) the relationship between GY and quality traits under each soil management condition and (iii) the relationship of traits with low-N versus optimum conditions. From the results, we observed the negative effects of low N on GY, KW and the percentage of protein content, and a positive effect on the percentage of starch content. The correlation between GY and all quality traits was very weak under both soil N conditions. GY had a strong relationship with KW under both optimum and low soil N conditions. Protein and starch content was significantly negative under both optimum and low-N conditions. There was no clear relationship among quality traits under optimum and low N, except for oil content. Therefore, it seems feasible to simultaneously improve GY along with quality traits under both optimum and low-N conditions, except for oil content. However, the negative trend observed between GY (starch) and protein content suggests the need for the regular monitoring of protein and starch content to identify varieties that combine both high GY and acceptable quality. Finally, we recommend further research with a few tropical maize genotypes contrasting for NUE to understand the relationship between the change in grain quality and NUE under low-N conditions. |
| format | Journal Article |
| id | CGSpace126529 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2022 |
| publishDateRange | 2022 |
| publishDateSort | 2022 |
| publisher | MDPI |
| publisherStr | MDPI |
| record_format | dspace |
| spelling | CGSpace1265292025-12-08T10:29:22Z Relationship between grain yield and quality traits under optimum and low-nitrogen stress environments in tropical maize Ertiro, Berhanu Tadesse Das, Biswanath Kosgei, Titus Tarekegne, Amsal Labuschagne, Maryke T. Worku, Mosisa Olsen, Michael Chaikam, Vijay Gowda, Manje nitrogen use efficiency grain protein content lipid content starch kernels Breeding for nitrogen use efficiency (NUE) is important to deal with food insecurity and its effect on grain quality, particularly protein. A total of 1679 hybrids were evaluated in 16 different trials for grain yield (GY), grain quality traits (protein, starch and oil content) and kernel weight (KW) under optimum and managed low soil nitrogen fields in Kiboko, Kenya, from 2011 to 2014. The objectives of our study were to understand (i) the effect of low soil N stress on GY and quality traits, (ii) the relationship between GY and quality traits under each soil management condition and (iii) the relationship of traits with low-N versus optimum conditions. From the results, we observed the negative effects of low N on GY, KW and the percentage of protein content, and a positive effect on the percentage of starch content. The correlation between GY and all quality traits was very weak under both soil N conditions. GY had a strong relationship with KW under both optimum and low soil N conditions. Protein and starch content was significantly negative under both optimum and low-N conditions. There was no clear relationship among quality traits under optimum and low N, except for oil content. Therefore, it seems feasible to simultaneously improve GY along with quality traits under both optimum and low-N conditions, except for oil content. However, the negative trend observed between GY (starch) and protein content suggests the need for the regular monitoring of protein and starch content to identify varieties that combine both high GY and acceptable quality. Finally, we recommend further research with a few tropical maize genotypes contrasting for NUE to understand the relationship between the change in grain quality and NUE under low-N conditions. 2022-02-10 2023-01-04T08:08:56Z 2023-01-04T08:08:56Z Journal Article https://hdl.handle.net/10568/126529 en Open Access application/pdf MDPI Ertiro, B. T., Das, B., Kosgei, T., Tesfaye, A. T., Labuschagne, M. T., Worku, M., Olsen, M. S., Chaikam, V., & Gowda, M. (2022). Relationship between Grain Yield and Quality Traits under Optimum and Low-Nitrogen Stress Environments in Tropical Maize. Agronomy, 12(2), 438. https://doi.org/10.3390/agronomy12020438 |
| spellingShingle | nitrogen use efficiency grain protein content lipid content starch kernels Ertiro, Berhanu Tadesse Das, Biswanath Kosgei, Titus Tarekegne, Amsal Labuschagne, Maryke T. Worku, Mosisa Olsen, Michael Chaikam, Vijay Gowda, Manje Relationship between grain yield and quality traits under optimum and low-nitrogen stress environments in tropical maize |
| title | Relationship between grain yield and quality traits under optimum and low-nitrogen stress environments in tropical maize |
| title_full | Relationship between grain yield and quality traits under optimum and low-nitrogen stress environments in tropical maize |
| title_fullStr | Relationship between grain yield and quality traits under optimum and low-nitrogen stress environments in tropical maize |
| title_full_unstemmed | Relationship between grain yield and quality traits under optimum and low-nitrogen stress environments in tropical maize |
| title_short | Relationship between grain yield and quality traits under optimum and low-nitrogen stress environments in tropical maize |
| title_sort | relationship between grain yield and quality traits under optimum and low nitrogen stress environments in tropical maize |
| topic | nitrogen use efficiency grain protein content lipid content starch kernels |
| url | https://hdl.handle.net/10568/126529 |
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