Genetics effects for maize traits in acid and non-acid soils
Breeding programs for acid-soil tolerance are desirable as a relatively inexpensive and permanent way for increasing maize (Zea mays L.) yield on these soils. Our objective was to compare the genetic effects controlling the expression of maize traits in acid and non-acid soils. Seven related and one...
| Autores principales: | , , , , |
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| Formato: | Journal Article |
| Lenguaje: | Inglés |
| Publicado: |
FapUNIFESP
2008
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| Materias: | |
| Acceso en línea: | https://hdl.handle.net/10568/42910 |
| _version_ | 1855536186897989632 |
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| author | Pérez Velásquez, Juan Carlos Souza Junior, C.L. de Narro Leon, LA Pandey, S. León, C. de |
| author_browse | León, C. de Narro Leon, LA Pandey, S. Pérez Velásquez, Juan Carlos Souza Junior, C.L. de |
| author_facet | Pérez Velásquez, Juan Carlos Souza Junior, C.L. de Narro Leon, LA Pandey, S. León, C. de |
| author_sort | Pérez Velásquez, Juan Carlos |
| collection | Repository of Agricultural Research Outputs (CGSpace) |
| description | Breeding programs for acid-soil tolerance are desirable as a relatively inexpensive and permanent way for increasing maize (Zea mays L.) yield on these soils. Our objective was to compare the genetic effects controlling the expression of maize traits in acid and non-acid soils. Seven related and one unrelated inbred lines, with different levels of tolerance to acid soil, and their F1, F2, BC1, and BC2 generations were evaluated in four acid and two non-acid soils. Estimates of additive, dominance, and epistatic effects were computed for grain yield, plant height, days to mid-silk, and prolificacy, using the generation means analysis procedure. For all traits the major part of the variation was accounted for by additive and dominance effects, with dominance effects being more important than additive and epistatic effects for both acid and non-acid soils. Epistatic effects were significant for some crosses only, being more pronounced for plant height than for the other traits. Furthermore, epistatic effects were randomly distributed among the crosses and were not related to the grain yield of the single-crosses (F1's) and to the genetic relationships of the inbreds in either type of soil. The results suggest that similar pooled gene effects control the expression of the traits assessed in both acid and non-acid soils. |
| format | Journal Article |
| id | CGSpace42910 |
| institution | CGIAR Consortium |
| language | Inglés |
| publishDate | 2008 |
| publishDateRange | 2008 |
| publishDateSort | 2008 |
| publisher | FapUNIFESP |
| publisherStr | FapUNIFESP |
| record_format | dspace |
| spelling | CGSpace429102024-11-15T08:52:58Z Genetics effects for maize traits in acid and non-acid soils Pérez Velásquez, Juan Carlos Souza Junior, C.L. de Narro Leon, LA Pandey, S. León, C. de zea mays maize genetic variation dominant genes acid soils maíz variación genética genes dominantes suelo ácido Breeding programs for acid-soil tolerance are desirable as a relatively inexpensive and permanent way for increasing maize (Zea mays L.) yield on these soils. Our objective was to compare the genetic effects controlling the expression of maize traits in acid and non-acid soils. Seven related and one unrelated inbred lines, with different levels of tolerance to acid soil, and their F1, F2, BC1, and BC2 generations were evaluated in four acid and two non-acid soils. Estimates of additive, dominance, and epistatic effects were computed for grain yield, plant height, days to mid-silk, and prolificacy, using the generation means analysis procedure. For all traits the major part of the variation was accounted for by additive and dominance effects, with dominance effects being more important than additive and epistatic effects for both acid and non-acid soils. Epistatic effects were significant for some crosses only, being more pronounced for plant height than for the other traits. Furthermore, epistatic effects were randomly distributed among the crosses and were not related to the grain yield of the single-crosses (F1's) and to the genetic relationships of the inbreds in either type of soil. The results suggest that similar pooled gene effects control the expression of the traits assessed in both acid and non-acid soils. 2008 2014-09-24T07:58:45Z 2014-09-24T07:58:45Z Journal Article https://hdl.handle.net/10568/42910 en Open Access FapUNIFESP |
| spellingShingle | zea mays maize genetic variation dominant genes acid soils maíz variación genética genes dominantes suelo ácido Pérez Velásquez, Juan Carlos Souza Junior, C.L. de Narro Leon, LA Pandey, S. León, C. de Genetics effects for maize traits in acid and non-acid soils |
| title | Genetics effects for maize traits in acid and non-acid soils |
| title_full | Genetics effects for maize traits in acid and non-acid soils |
| title_fullStr | Genetics effects for maize traits in acid and non-acid soils |
| title_full_unstemmed | Genetics effects for maize traits in acid and non-acid soils |
| title_short | Genetics effects for maize traits in acid and non-acid soils |
| title_sort | genetics effects for maize traits in acid and non acid soils |
| topic | zea mays maize genetic variation dominant genes acid soils maíz variación genética genes dominantes suelo ácido |
| url | https://hdl.handle.net/10568/42910 |
| work_keys_str_mv | AT perezvelasquezjuancarlos geneticseffectsformaizetraitsinacidandnonacidsoils AT souzajuniorclde geneticseffectsformaizetraitsinacidandnonacidsoils AT narroleonla geneticseffectsformaizetraitsinacidandnonacidsoils AT pandeys geneticseffectsformaizetraitsinacidandnonacidsoils AT leoncde geneticseffectsformaizetraitsinacidandnonacidsoils |