Response to Selection for Drought Tolerance in Algerian Maize Populations for Spanish Conditions
Drought is the main stress on maize, and, in order to improve drought tolerance, a breeding program for reduced anthesis-silking interval (ASI) was carried out in Algiers. The objective of this study was to investigate if the selection for reduced ASI made in Algiers had a positive effect on drought...
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2025-02-01
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| author | Maysoun Benchikh-Lehocine Lorena Álvarez-Iglesias Pedro Revilla Rosa Ana Malvar Abderrahmane Djemel Meriem Laouar |
| author_facet | Maysoun Benchikh-Lehocine Lorena Álvarez-Iglesias Pedro Revilla Rosa Ana Malvar Abderrahmane Djemel Meriem Laouar |
| author_sort | Maysoun Benchikh-Lehocine |
| collection | DOAJ |
| description | Drought is the main stress on maize, and, in order to improve drought tolerance, a breeding program for reduced anthesis-silking interval (ASI) was carried out in Algiers. The objective of this study was to investigate if the selection for reduced ASI made in Algiers had a positive effect on drought tolerance in northern Spain. Two populations selected for reduced ASI in Algiers were evaluated in Algiers and Pontevedra (northwestern Spain) under well-watered and drought conditions. The dry trial was not irrigated, while the well-watered trial was irrigated three times. Data were taken on agronomic and photosynthetic traits in the selection of reduced ASI and anthesis and increased yield for BTM and LOM. In the combined analyses of variance in locations, differences were significant among environments and among genotypes for most agronomic traits. Rank correlations between Algiers and Pontevedra were high and significant for flowering and correlations were higher when measured under the same water regime. In the Spanish environments, differences between the drought and well-watered selection and differences among genotypes within water regimens were significant for most agronomic traits. The agronomic performance of the selection cycles under drought and well-watered conditions indicated that selection for reducing ASI in Algiers was partially effective in Pontevedra. Photosynthetic traits did not respond to selection for ASI; nevertheless, stomatal conductance had positive effects and water use efficiency had a negative effect on plant height and yield. Therefore, base breeding populations after prebreeding in arid environments could be used for breeding programs in humid environments, and some physiological traits had limited effects on plant growth and yield. |
| format | Article |
| id | doaj-art-0568dc83fa41480ab9d0a2f8ffadda46 |
| institution | DOAJ |
| issn | 2073-4395 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj-art-0568dc83fa41480ab9d0a2f8ffadda462025-08-20T02:44:55ZengMDPI AGAgronomy2073-43952025-02-0115249910.3390/agronomy15020499Response to Selection for Drought Tolerance in Algerian Maize Populations for Spanish ConditionsMaysoun Benchikh-Lehocine0Lorena Álvarez-Iglesias1Pedro Revilla2Rosa Ana Malvar3Abderrahmane Djemel4Meriem Laouar5Ecole Nationale Supérieure Agronomique, Avenue Hassan Badi, El Harrach, Algiers 16051, AlgeriaMisión Biológica de Galicia, Spanish National Research Council (CSIC), Apartado 28, 36080 Pontevedra, SpainMisión Biológica de Galicia, Spanish National Research Council (CSIC), Apartado 28, 36080 Pontevedra, SpainMisión Biológica de Galicia, Spanish National Research Council (CSIC), Apartado 28, 36080 Pontevedra, SpainEcole Nationale Supérieure Agronomique, Avenue Hassan Badi, El Harrach, Algiers 16051, AlgeriaEcole Nationale Supérieure Agronomique, Avenue Hassan Badi, El Harrach, Algiers 16051, AlgeriaDrought is the main stress on maize, and, in order to improve drought tolerance, a breeding program for reduced anthesis-silking interval (ASI) was carried out in Algiers. The objective of this study was to investigate if the selection for reduced ASI made in Algiers had a positive effect on drought tolerance in northern Spain. Two populations selected for reduced ASI in Algiers were evaluated in Algiers and Pontevedra (northwestern Spain) under well-watered and drought conditions. The dry trial was not irrigated, while the well-watered trial was irrigated three times. Data were taken on agronomic and photosynthetic traits in the selection of reduced ASI and anthesis and increased yield for BTM and LOM. In the combined analyses of variance in locations, differences were significant among environments and among genotypes for most agronomic traits. Rank correlations between Algiers and Pontevedra were high and significant for flowering and correlations were higher when measured under the same water regime. In the Spanish environments, differences between the drought and well-watered selection and differences among genotypes within water regimens were significant for most agronomic traits. The agronomic performance of the selection cycles under drought and well-watered conditions indicated that selection for reducing ASI in Algiers was partially effective in Pontevedra. Photosynthetic traits did not respond to selection for ASI; nevertheless, stomatal conductance had positive effects and water use efficiency had a negative effect on plant height and yield. Therefore, base breeding populations after prebreeding in arid environments could be used for breeding programs in humid environments, and some physiological traits had limited effects on plant growth and yield.https://www.mdpi.com/2073-4395/15/2/499Algerian maizeanthesis-silking intervalbreedingdrought |
| spellingShingle | Maysoun Benchikh-Lehocine Lorena Álvarez-Iglesias Pedro Revilla Rosa Ana Malvar Abderrahmane Djemel Meriem Laouar Response to Selection for Drought Tolerance in Algerian Maize Populations for Spanish Conditions Agronomy Algerian maize anthesis-silking interval breeding drought |
| title | Response to Selection for Drought Tolerance in Algerian Maize Populations for Spanish Conditions |
| title_full | Response to Selection for Drought Tolerance in Algerian Maize Populations for Spanish Conditions |
| title_fullStr | Response to Selection for Drought Tolerance in Algerian Maize Populations for Spanish Conditions |
| title_full_unstemmed | Response to Selection for Drought Tolerance in Algerian Maize Populations for Spanish Conditions |
| title_short | Response to Selection for Drought Tolerance in Algerian Maize Populations for Spanish Conditions |
| title_sort | response to selection for drought tolerance in algerian maize populations for spanish conditions |
| topic | Algerian maize anthesis-silking interval breeding drought |
| url | https://www.mdpi.com/2073-4395/15/2/499 |
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