id	keyword
ahs-7491	vase
ahs-7491	flowers
ahs-7491	agnps
ahs-7491	et al
ahs-7491	cut
ahs-7491	chrysanthemum
ahs-7491	control
ahs-7491	l­1
ahs-7491	life
ahs-7491	period
ahs-7491	carnation
ahs-7491	activity
ahs-7491	stem
ahs-7491	petals
ahs-7491	water
ahs-7491	ethylene
ahs-7491	fig
ahs-7491	end