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. 2005 Apr 4;102(15):5438–5442. doi: 10.1073/pnas.0501596102

Fig. 5.

Fig. 5.

Relationships between changes in P. nodorum DNA and M. graminicola DNA in Broadbalk harvest samples and changes in atmospheric SO2 emissions over the period 1844–2003. (a) Relationship between ratio of P. nodorum to M. graminicola DNA and SO2 emissions (10-yr average values). Data are for Squareheads Master (▴) and other cultivars (▪). Linear regression, r = 0.96; P < 0.001. (b) Relationship between P. nodorum DNA and atmospheric SO2 emissions [10-yr average values (23, 24)]. Linear regression, r = 0.76; P < 0.001. (c) Relationship between M. graminicola DNA and SO2 emissions (10-yr average values). Linear regression, r = –0.76; P < 0.003.