Whitefly maintenance and virus
source. Bemisia tabaci colonies were
reared on healthy plants of the tomato line
FC. These plants were grown in muslincovered
cages. An isolate of TYLCV belonging
to the TYLCV-Sar group was obtained
from tomato plants from Murcia (a
tomato producing region in southern
Spain) and maintained in plants of the
tomato line FC by whitefly transmission,
renewing the virus stock every month.