resistance in the popular rice
cultivar IR64, and the current level of resistance of IR64 to N. lugens in a large rice growing area with low brown
planthopper populations (Central Luzon, Philippines). In greenhouse experiments with N. lugens populations
collected from Central Luzon, IR64 showed slight to moderate levels of antibiosis, antixenosis, and tolerance
relative to the cultivars IR22 and Azucena, which contain no major genes for N. lugens resistance. IR64 was also
more resistant than IR26 in most
resistance in the popular ricecultivar IR64, and the current level of resistance of IR64 to N. lugens in a large rice growing area with low brownplanthopper populations (Central Luzon, Philippines). In greenhouse experiments with N. lugens populationscollected from Central Luzon, IR64 showed slight to moderate levels of antibiosis, antixenosis, and tolerancerelative to the cultivars IR22 and Azucena, which contain no major genes for N. lugens resistance. IR64 was alsomore resistant than IR26 in most
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