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Table 4 Correlation of nematode reproduction and gall rating with agronomic traits for the 1st and 2nd seasons

From: QTL mapping for resistance to and tolerance for the rice root-knot nematode, Meloidogyne graminicola

  First season Second season
J2 per root system J2 per g of root Gall rating J2 per root system J2 per g of root Gall rating
Plant height −0.053 − 0.198** − 0.072 −0.021 − 0.039 −0.145*
Fresh shoot wt. − 0.048 − 0.288** − 0.262** − 0.023 −0.068 − 0.175**
Dry shoot wt. − 0.154** − 0.263** − 0.286** − 0.246** − 0.256** − 0.189**
Fresh root wt. − 0.177** − 0.341** 0.021 −0.180** − 0.428** 0.006
Dry root wt. −0.155** − 0.347** − 0.051 −0.158** − 0.389** − 0.023
Panicles per plant −0.034 − 0.188** − 0.140* − 0.010 −0.046 − 0.114*
percentage of filled grains −0.053 − 0.083 −0.067 − 0.059 −0.023 − 0.067
Yield per plant −0.005 − 0.057 −0.172** − 0.012 −0.082 − 0.151**
Yield reduction 0.046 0.022 0.173* 0.013 0.077 0.245**
  1. **significant at P = 0.01
  2. *significant at P = 0.05