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Table 1 Linear mixed models for total ergot alkaloids in tall fescue plants. The grasses from the wild origins (Orig) Gotland (G) and Sweden (S) and cultivar ‘Kentucky-31’ (KY31) were compared with wild origin Åland (A) in water (W) and nutrition (N) treatment (Treat) plots. Results for the same model are shown for plants grown in Finland or Kentucky with all main factors and those interactions that were statistically significant in either of the experiments. Model estimates are standard errors (S.E.), degrees of freedom (df), and t-tests (t) with P-values (P) *** < 0.001,** < 0.01,* < 0.05, o < 0.1

From: Alkaloid Quantities in Endophyte-Infected Tall Fescue are Affected by the Plant-Fungus Combination and Environment

  FINLAND      KENTUCKY     
  Value S.E. df t P   Value S.E. df t P  
Intercept 1.980 0.104 103 19.04 0.001 *** 2.065 0.130 100 15.85 0.001 ***
Treat N 0.839 0.130 36 6.45 0.001 *** 0.095 0.172 36 0.55 0.584  
Treat W 0.144 0.130 36 1.11 0.276   -0.286 0.165 36 -1.74 0.091 o
W*N -0.262 0.123 36 -2.13 0.040 * -0.064 0.165 36 -0.39 0.701  
Orig G -0.092 0.139 103 -0.66 0.509   -0.122 0.163 100 -0.75 0.454  
Orig S 0.046 0.139 103 0.33 0.741   -0.278 0.159 100 -1.74 0.084 o
Orig KY31 -0.606 0.144 103 -4.20 0.001   -0.694 0.160 100 -4.34 0.001 ***
N*G -0.461 0.163 103 -2.84 0.006 ** -0.036 0.189 100 -0.19 0.849  
N*S -0.619 0.160 103 -3.86 0.001 *** 0.027 0.188 100 0.15 0.884  
N*KY31 -0.423 0.169 103 -2.50 0.014 * 0.011 0.189 100 0.06 0.953  
W*G -0.133 0.163 103 -0.82 0.416   -0.035 0.189 100 -0.18 0.855  
W*S -0.047 0.160 103 -0.29 0.772   0.151 0.188 100 0.8 0.423  
W*KY31 -0.176 0.170 103 -1.03 0.304   0.429 0.189 100 2.26 0.026 *
AIC 177.01       214.71      
loglikelihood -73.50       -92.35