Abstract
Successful delivery of genomic RNA of sweet clover necrotic mosaic virus to detached and intact leaf tissues of Vigna unguiculata cv. California Black Eye, has been demonstrated by using a simple biolistic device equipped with a polyacetal macroprojectile with RNA-coated gold particles, driven by gas pressure from a nitrogen cylinder controlled by a solenoid valve. The device is free of explosive heat and thus cell damage due to delivery operation is minimized.