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...
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| Format: | Article |
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MDPI AG
2022-02-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/2/438 |
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| author | Berhanu Tadesse Ertiro Biswanath Das Titus Kosgei Amsal Tarekegne Tesfaye Maryke T. Labuschagne Mosisa Worku Michael S. Olsen Vijay Chaikam Manje Gowda |
| author_facet | Berhanu Tadesse Ertiro Biswanath Das Titus Kosgei Amsal Tarekegne Tesfaye Maryke T. Labuschagne Mosisa Worku Michael S. Olsen Vijay Chaikam Manje Gowda |
| author_sort | Berhanu Tadesse Ertiro |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-03-09T22:50:24Z |
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| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T22:50:24Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-72e039b5f45e4e46a33c1be798a73dfd2023-11-23T18:22:05ZengMDPI AGAgronomy2073-43952022-02-0112243810.3390/agronomy12020438Relationship between Grain Yield and Quality Traits under Optimum and Low-Nitrogen Stress Environments in Tropical MaizeBerhanu Tadesse Ertiro0Biswanath Das1Titus Kosgei2Amsal Tarekegne Tesfaye3Maryke T. Labuschagne4Mosisa Worku5Michael S. Olsen6Vijay Chaikam7Manje Gowda8International Maize and Wheat Improvement Center (CIMMYT), ICRAF House, UN Avenue, Gigiri, Nairobi P.O. Box 1041-00621, KenyaInternational Maize and Wheat Improvement Center (CIMMYT), ICRAF House, UN Avenue, Gigiri, Nairobi P.O. Box 1041-00621, KenyaInternational Maize and Wheat Improvement Center (CIMMYT), ICRAF House, UN Avenue, Gigiri, Nairobi P.O. Box 1041-00621, KenyaInternational Maize and Wheat Improvement Center (CIMMYT), Harare P.O. Box MP163, ZimbabweDepartment of Plant Sciences, University of the Free State, P.O. Box 339, Bloemfontein 9300, South AfricaInternational Maize and Wheat Improvement Center (CIMMYT), ICRAF House, UN Avenue, Gigiri, Nairobi P.O. Box 1041-00621, KenyaInternational Maize and Wheat Improvement Center (CIMMYT), ICRAF House, UN Avenue, Gigiri, Nairobi P.O. Box 1041-00621, KenyaInternational Maize and Wheat Improvement Center (CIMMYT), ICRAF House, UN Avenue, Gigiri, Nairobi P.O. Box 1041-00621, KenyaInternational Maize and Wheat Improvement Center (CIMMYT), ICRAF House, UN Avenue, Gigiri, Nairobi P.O. Box 1041-00621, KenyaBreeding 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.https://www.mdpi.com/2073-4395/12/2/438NUEgrain yieldprotein contentoil contentstarch contentcorrelation |
| spellingShingle | Berhanu Tadesse Ertiro Biswanath Das Titus Kosgei Amsal Tarekegne Tesfaye Maryke T. Labuschagne Mosisa Worku Michael S. Olsen Vijay Chaikam Manje Gowda Relationship between Grain Yield and Quality Traits under Optimum and Low-Nitrogen Stress Environments in Tropical Maize Agronomy NUE grain yield protein content oil content starch content correlation |
| 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 | NUE grain yield protein content oil content starch content correlation |
| url | https://www.mdpi.com/2073-4395/12/2/438 |
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