Association of morphological characters in maize (Zea mays L.) populations under water stress and non water stress conditions
The association of different plant characters, under and without water stress conditions, was studied in one local and five exotic open-pollinated maize varieties, in field experiments during the summers of 1988/89 and 1989/90. A split plot design with three replications for each site was used. Geno...
| Main Authors: | , |
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| Format: | Online |
| Language: | spa |
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Facultad de Ciencias Agropecuarias
1992
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| Subjects: | |
| Online Access: | https://revistas.unc.edu.ar/index.php/agris/article/view/2373 |
| _version_ | 1834605839075246080 |
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| author | Biasutti, C. A. Peiretti, D. A. |
| author_facet | Biasutti, C. A. Peiretti, D. A. |
| author_sort | Biasutti, C. A. |
| collection | Portal de Revistas |
| description | The association of different plant characters, under and without water stress conditions, was studied in one local and five exotic open-pollinated maize varieties, in field experiments during the summers of 1988/89 and 1989/90. A split plot design with three replications for each site was used. Genotypes were evaluated for yield and eleven characters. Correlation coefficients under water stress indicated that number of leaves, ear height, black layer maturity, senescence of ear leaf, prolificacy, interval between pollen shed and silking, plant height and grains per row significantly influenced grain yield. Under non-stress conditions, ear length, senescence of ear leaf, grains per row and prolificacy significantly influenced grain yield. Through path coefficient analysis, it was concluded that the improvement of drought tolerance can be achieved by using characters like the interval between pollen shed and silking, prolificacy, number of grains per row and senescence of ear leaf as selection criteria. |
| format | Online |
| id | oai:ojs.revistas.unc.edu.ar:article-2373 |
| institution | Universidad Nacional de Cordoba |
| language | spa |
| publishDate | 1992 |
| publisher | Facultad de Ciencias Agropecuarias |
| record_format | ojs |
| spelling | oai:ojs.revistas.unc.edu.ar:article-23732024-09-10T17:37:14Z Association of morphological characters in maize (Zea mays L.) populations under water stress and non water stress conditions Asociación de caracteres morfológicos en poblaciones de maíz (Zea mays L.) en condiciones de estrés y no estrés hídrico Biasutti, C. A. Peiretti, D. A. correlations populations path analysis drought stress maize correlación poblaciones análisis de trayectoria estrés hídrico maíz The association of different plant characters, under and without water stress conditions, was studied in one local and five exotic open-pollinated maize varieties, in field experiments during the summers of 1988/89 and 1989/90. A split plot design with three replications for each site was used. Genotypes were evaluated for yield and eleven characters. Correlation coefficients under water stress indicated that number of leaves, ear height, black layer maturity, senescence of ear leaf, prolificacy, interval between pollen shed and silking, plant height and grains per row significantly influenced grain yield. Under non-stress conditions, ear length, senescence of ear leaf, grains per row and prolificacy significantly influenced grain yield. Through path coefficient analysis, it was concluded that the improvement of drought tolerance can be achieved by using characters like the interval between pollen shed and silking, prolificacy, number of grains per row and senescence of ear leaf as selection criteria. Durante los ciclos 1988/89 y 1989/90, se analizó la asociación entre diversos caracteres bajo condiciones de estrés y no estrés hídrico, en experimentos de campo, en seis poblaciones de maíz, una local y cinco exóticas. Se utilizó un diseño en parcela dividida dispuesto en bloques al azar con tres repeticiones. Los genotipos fueron evaluados a través de once caracteres morfológicos, además de rendimiento. Bajo estrés hídrico, el número de hojas, altura de la primera mazorca al madurez fisiológica, senescencia foliar, prolificidad, intervalo de floración, altura de planta y granos por hilera, se correlacionaron significativamente con el rendimiento. En condiciones hídricas adecuadas, el largo de mazorca, senescencia foliar, granos por hilera y la prolificidad se correlacionaron significativamente con el rendimiento. A través del análisis de trayectoria, se concluye que el mejoramiento para tolerancia a estrés hídrico es posible mediante el empleo de caracteres como el intervalo de floración y la prolificidad, conjuntamente con el número de granos por hilera y la senescencia foliar, como criterios de selección. Facultad de Ciencias Agropecuarias 1992-07-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.unc.edu.ar/index.php/agris/article/view/2373 10.31047/1668.298x.v9.n2.2373 AgriScientia; Vol. 9 No. 2 (1992); 59-64 AgriScientia; Vol. 9 Núm. 2 (1992); 59-64 1668-298X 10.31047/1668.298x.v9.n2 spa https://revistas.unc.edu.ar/index.php/agris/article/view/2373/1316 Derechos de autor 1992 C. A. Biasutti, D. A. Peiretti https://creativecommons.org/licenses/by-sa/4.0 |
| spellingShingle | correlations populations path analysis drought stress maize correlación poblaciones análisis de trayectoria estrés hídrico maíz Biasutti, C. A. Peiretti, D. A. Association of morphological characters in maize (Zea mays L.) populations under water stress and non water stress conditions |
| title | Association of morphological characters in maize (Zea mays L.) populations under water stress and non water stress conditions |
| title_alt | Asociación de caracteres morfológicos en poblaciones de maíz (Zea mays L.) en condiciones de estrés y no estrés hídrico |
| title_full | Association of morphological characters in maize (Zea mays L.) populations under water stress and non water stress conditions |
| title_fullStr | Association of morphological characters in maize (Zea mays L.) populations under water stress and non water stress conditions |
| title_full_unstemmed | Association of morphological characters in maize (Zea mays L.) populations under water stress and non water stress conditions |
| title_short | Association of morphological characters in maize (Zea mays L.) populations under water stress and non water stress conditions |
| title_sort | association of morphological characters in maize zea mays l populations under water stress and non water stress conditions |
| topic | correlations populations path analysis drought stress maize correlación poblaciones análisis de trayectoria estrés hídrico maíz |
| topic_facet | correlations populations path analysis drought stress maize correlación poblaciones análisis de trayectoria estrés hídrico maíz |
| url | https://revistas.unc.edu.ar/index.php/agris/article/view/2373 |
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