Three spring wheat genotypes (cv. Albis and Toronit and the experimental line L94491) identified to vary in nitrogen use efficiency characteristics, were studied in lysimeters under two levels of N supply (0 and 2501(g N ha(-1)) in 1999 and 2000. No. of roots cm(-2) were obtained from regular minirhizotron observations at soil depths of 0.10, 0.25, 0.45, 0.80 and 1.00m and fitted to a logistic equation. The parameters of the logistic model were influenced by all study factors, indicating a high plasticity of the root system of spring wheat to respond to different soil conditions. A single main genotype effect was observed among all tested factors: the asymptotic no. of roots cm-2 was significantly higher for Toronit than Albis and especially L94491 in the topsoil (0.10 and 0.30m). Contrastingly, the N supply modified the asymptotic growth in 1999 at 0.10 m and in both years at 0.25 m as well as the root growth pattern at 0.80 in 1999 and at 0.10 m and 0.25 m soil depth in both years.
CITATION STYLE
Herrera, J. M., Stamp, P., & Liedgens, M. (2007). Dynamics of Root Development of Spring Wheat Genotypes Varying in Nitrogen Use Efficiency. In Wheat Production in Stressed Environments (pp. 197–201). Springer Netherlands. https://doi.org/10.1007/1-4020-5497-1_25
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