1 “...Plant breeders and geneticists are under constant pressure to sustain and expand food production...”

2 “...Plant breeders and geneticists are under constant pressure to sustain and expand food production...”

3 “...Plant breeders and geneticists are under constant pressure to sustain food production by using...”

4 “...Plant breeders and geneticists are under constant pressure to sustain food production by using...”

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