Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition
The study aimed at examining the associations between yield and other traits under drought stress and non-stress conditions. A total of 150 MARS testcrosses were evaluated under both conditions at the International Institute of Tropical Agriculture substation for two years under during the dry seaso...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
University of Ljubljana
2019
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/105743 |
| _version_ | 1855537894734692352 |
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| author | Bankole, F. Menkir, A. Olaoye, G. Olakojo, O. Gedil, Melaku A |
| author_browse | Bankole, F. Gedil, Melaku A Menkir, A. Olakojo, O. Olaoye, G. |
| author_facet | Bankole, F. Menkir, A. Olaoye, G. Olakojo, O. Gedil, Melaku A |
| author_sort | Bankole, F. |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | The study aimed at examining the associations between yield and other traits under drought stress and non-stress conditions. A total of 150 MARS testcrosses were evaluated under both conditions at the International Institute of Tropical Agriculture substation for two years under during the dry season. Genotypic and phenotypic correlation, multiple stepwise regression and path co-efficient analyses were carried out to examine the relationship among the traits under both environments. Results showed anthesis-silking interval, days to silking, husk cover and plant aspect were significantly associated with yield under drought condition at both genotypic and phenotypic levels. Yield was positively correlated with plant and ear height but had a negative correlation with plant and ear aspect at both levels under well-watered condition. Regression analysis showed that ears per plant, plant aspect, ear aspect, days to silking, leaf death and plant height had a direct effect on yield, contributing a total of 71.1 % of observed variation under drought, while ears per plant, ear aspect, plant aspect, days to pollen shed, days to silking and plant height contributed about 31.42 % to yield under well-watered conditions. The study concluded that these traits be used as selection criteria as it will aid improvement of maize yield. |
| format | Journal Article |
| id | CGSpace105743 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2019 |
| publishDateRange | 2019 |
| publishDateSort | 2019 |
| publisher | University of Ljubljana |
| publisherStr | University of Ljubljana |
| record_format | dspace |
| spelling | CGSpace1057432025-11-11T10:44:38Z Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition Bankole, F. Menkir, A. Olaoye, G. Olakojo, O. Gedil, Melaku A maize associations grain yields drought phenotypic variation abiotic stress biotic stress The study aimed at examining the associations between yield and other traits under drought stress and non-stress conditions. A total of 150 MARS testcrosses were evaluated under both conditions at the International Institute of Tropical Agriculture substation for two years under during the dry season. Genotypic and phenotypic correlation, multiple stepwise regression and path co-efficient analyses were carried out to examine the relationship among the traits under both environments. Results showed anthesis-silking interval, days to silking, husk cover and plant aspect were significantly associated with yield under drought condition at both genotypic and phenotypic levels. Yield was positively correlated with plant and ear height but had a negative correlation with plant and ear aspect at both levels under well-watered condition. Regression analysis showed that ears per plant, plant aspect, ear aspect, days to silking, leaf death and plant height had a direct effect on yield, contributing a total of 71.1 % of observed variation under drought, while ears per plant, ear aspect, plant aspect, days to pollen shed, days to silking and plant height contributed about 31.42 % to yield under well-watered conditions. The study concluded that these traits be used as selection criteria as it will aid improvement of maize yield. 2019-10-30 2019-11-14T16:16:14Z 2019-11-14T16:16:14Z Journal Article https://hdl.handle.net/10568/105743 en Open Access application/pdf University of Ljubljana Bankole, F., Menkir, A., Olaoye, G., Olakojo, O. & Gedil, M. (2019). Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition. Acta Agriculturae Slovenica, 114(1), 75-84. |
| spellingShingle | maize associations grain yields drought phenotypic variation abiotic stress biotic stress Bankole, F. Menkir, A. Olaoye, G. Olakojo, O. Gedil, Melaku A Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition |
| title | Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition |
| title_full | Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition |
| title_fullStr | Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition |
| title_full_unstemmed | Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition |
| title_short | Association studies between grain yield and agronomic traits of a MARS maize (Zea mays L.) population under drought and non-stress condition |
| title_sort | association studies between grain yield and agronomic traits of a mars maize zea mays l population under drought and non stress condition |
| topic | maize associations grain yields drought phenotypic variation abiotic stress biotic stress |
| url | https://hdl.handle.net/10568/105743 |
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