Herbicide resistance Agricultural utility 1 Biology 1 Cloning 1 Herbicide tranformations 1 Herbicides bioherbicides and herbicide safeness 1 Plant biotechnology 1 Plant breeding 1 Plant tissue culture 1 Radio immunoassays 1 Rice 1 Sulfonanilides 1 Tissue culture, Plant 1 Weed Biology 1 Weed management 1 solar energy utilisation 1