The efficiency of between and within family selection in a full-sib family recurrent selection programme was investigated using data from three cycles of recurrent selection. Correlations between mid-parent values and offspring were high for sugar content and juice purity characters, but low for root weight and sugar yield. This suggests that single root selection within full-sib families is effective in the improvement of sugar content and juice purity, but ineffective for root weight and sugar yield. Root weight and sugar yield will respond better to between full-sib family selection.
Zhao, B., Mackay, I. J., Caligari, P. D. S., & Mead, R. (1997). The efficiency of between and within full-sib family selection in a recurrent selection programme in sugar beet (Beta vulgaris L.). Euphytica, 95(3), 355–359. https://doi.org/10.1023/A:1003026800450