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Table 2 Average root weight, severity of root galling and nematode (J2) reproduction in parental lines and RILs infected with Meloidogyne graminicola as assessed in two seasons

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

Traits First season Second season
Root wt. Gall rating J2 per root system J2 per g of root Root wt. Gall rating J2 per root system J2 per g of root
IR64 11.8 5.0 54,368 4620 16.1 5.0 44,012 4113
IR78877–208-B-1-2 15.6 3.0 4688 372 13.8 3.0 3263 359
F4 RILs
 Resistant 12.8 3.4 802 66 15.4 3.5 1696 114
 Partially resistant 12.9 4.3 3629 309 15.3 4.1 5789 400
 Susceptible 15.6 4.6 21,373 1544 15.9 4.4 20,207 1358
 H (%) 69 68 89 88 65 64 94 84