Fig. 4.

A 4D chromosomal fragment enhances growth of seminal roots but not fine roots of durum wheat grown on an acid soil. Growth of (A) the three longest seminal roots, (B) fine roots and (C) total roots was assessed for lines T1, S1, 4D(4B), ‘Jandaroi’, ‘Chinese Spring’ and ET8 grown on an unamended acid soil (Batch A: Materials and Methods) and the same soil that had been limed at various rates. Plants were harvested 7 d after sowing and the data show treatment means (n = 5) and the least significant difference (l.s.d.; P = 0·05).