Genotype, environmental and GxE interactions effects on the meiotic index in hexaploid triticale (Triticosecale Wittmack)
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Abstract
Triticale (Triticosecale Wittmack) is an artificial alloploid species adapted to marginal crop areas, including semiarid conditions. Diverse studies have analysed the effects of the genotype and the environment on the meiotic disorders. The objectives of this study were to determine: 1) the existence of genetic variability for the meiotic index; 2) the effect of two moisture regimes on this character; 3) the presence of interaction between both factors. Six triticale varieties were cultivated under two moisture regimes: with and without irrigation. Significant statistical mean differences between the six genotypes studied were observed, but not between water treatments. However, a significant GxE interaction was observed, which indicates a differential behaviour of some genotypes according to the irrigation regimes. The data suggest a relation between the meiotic index and the germoplasm origin.
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References
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