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Relationship between Seedling Stage and Tolerance to Ammonium in Maize
Mean value of total dry weight for eight genotypes of corn as treated with 100 mM NH4+ at four vegetative growth stages
Mean value of total dry weight for eight genotypes of corn as treated with 100 mM NH4+ at four vegetative growth stages

Author:Guang-Jauh Shieh*, Wen-Long Tsaur, Chan-Lee Ho, King-Hsing Yang and Hung-Shung Lu

Abstract:

    To evaluate the tolerance of maize inbred and hybrid to ammonium-nitrogen (NH4+-N), seedlings were grown in sand culture and supplemented with 100 mM NH4+ at different stages. Seedlings were harvested at 14 days after application of ammonium-nitrogen (NH4+-N) to determine the gross differences in total dry mass. The results showed that significant difference in genotype and plant growth stage were observed in seedling total dry weight in 100 mM NH4+-Ntrentment The tolerance to ammonium was increased with plant growth stages. There was a linear correlation between total dry weight and plant growth stages of maize seedling. The key stage for determining the tolerance to ammonium in mnige the seedling at the was 2 leaf stage.

Key words:Maize, Plant growth stage, Ammonium (NH4+), Correlation

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