Table VI. Correlation between grain yield and metabolite levels under two growth conditions in 2010

Correlation coefficients between grain yield and metabolite levels under each growth condition were calculated by using data from two growth conditions. Conditions were chosen to dissect the effects of stress combination. Ten genotypes grown in two growth conditions were analyzed (n = 20). Correlation coefficients shown are correlations at P < 0.05. ns, Not significant (P > 0.05).

MetaboliteWW/DSDS/DS+HSWW/HSHS/DS+HS
Ala−0.68**−0.39ns−0.47*
Asn−0.61−0.38ns−0.55*
Aspnsnsns0.37
Benzoate−0.32−0.71*−0.36−0.63*
β-Ala−0.45*nsnsns
Erythritol0.360.54*0.49*−0.34
Frunsns−0.38ns
Fumaratensns−0.33ns
Glycerol-3-P−0.43−0.63*ns−0.57*
GABA−0.69*ns−0.40ns
Galactinol−0.60*−0.38ns−0.72
Gluns−0.61*nsns
Glyceratensnsnsns
Glycerol−0.340.71*0.65*ns
Gly−0.69*−0.60*−0.34−0.68*
Homo-Ser−0.66nsns−0.57*
Ile−0.87**nsns−0.82**
Itaconatens−0.36ns−0.54*
Malate−0.52*0.63*nsns
Maltitol0.52*0.71*0.400.73*
Maltosens0.370.43*−0.42
Myoinositol−0.66*−0.69*ns−0.71*
Nicotinate−0.41nsns−0.42
Octadecanoatensns−0.36ns
Phe−0.90**nsns−0.80*
Phosphatensns0.36ns
Pro−0.56nsns−0.48*
Putrescine−0.48nsnsns
Pyro-Glu−0.36−0.54*ns−0.41
Raffinose−0.35ns−0.40ns
Ser−0.54*−0.41ns−0.45
Succinate−0.51*ns−0.63ns
Threonate−0.50*nsnsns
Thr−0.77*nsns−0.59*
Trehalose0.48*ns0.43ns
Trp−0.83**nsns−0.74*
Tyr−0.78*0.42ns−0.61*
Urea−0.67*−0.36nsns
Val−0.86**nsns−0.75*
Xylitolns0.64*ns0.72*
Xylnsnsns0.56*
  • * Correlation at P < 0.01.

  • ** Correlation at P < 0.001.