期刊
EUPHYTICA
卷 217, 期 8, 页码 -出版社
SPRINGER
DOI: 10.1007/s10681-021-02902-z
关键词
Zea mays L; drought stress; seedling growth; Algerian landraces
资金
- Spanish Ministerio de Innovacion y Universidades (MCIU), the Agencia Estatal de Investigacion (AEI) [PID2019-108127RB-I00]
- European Fund for Regional Development (FEDER), UE [PID2019-108127RB-I00]
- Ecole Nationale Superieure Agronomique
The study evaluated the adaptation of maize germplasm from Saharan oases to drought conditions in temperate environments. Results showed significant differences among Algerian populations under drought, indicating that drought tolerance is genotype-dependent and varies across environments. Some Algerian maize populations may serve as suitable sources of drought tolerance for temperate environments.
Drought is the main stress for agriculture, and maize (Zea mays L.) germplasm from the Sahara has been identified as potential source of drought tolerance; however, information about adaptation of semitropical maize germplasm from the Sahara to temperate areas has not been reported. Our objective was assessing the adaptation of maize germplasm from Saharan oases as sources of drought tolerance for improving yield and biomass production under drought conditions in temperate environments. A collection of maize populations from Saharan oases was evaluated under drought and control conditions in Spain and Algeria. Algerian populations were significantly different under drought for most traits, and the significant genotype x environment interactions indicated that drought tolerance is genotype-dependent, but tolerance differences among genotypes change across environments. Based on yield, the Algerian maize populations PI527474, PI527478, PI527472, PI527467, PI527470, and PI527473 would be appropriate sources of drought tolerance for temperate environments. Concerning biomass production, the most interesting populations were PI527467, PI542685, PI527478, and PI527472. These Saharan populations could provide favorable alleles for drought tolerance for temperate breeding programs, and could also be used for studying mechanisms and genetic regulation of drought tolerance.
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