FIGURE 6.

Effects of Pi deficiency for 4 days on RSA. MI48 seedlings (4-days-old) were grown under P+ and P- conditions for 4 days. (A) Harvested roots were spread to reveal the details of RSA showing (a) seminal and (b) primary roots with well developed lateral roots of both P+ and P- seedlings. Data are presented for (B) number and (C) total length of lateral roots on seminal roots. Values (B,C) are mean ± SE and n = 12 replicates. Different letters on the histogram indicate that the means differ significantly (P < 0.05).