The tomato is, after the potato, the most
consumed vegetable in the world, either fresh
or after processing. It is grown in all latitudes
in a variety of conditions (climate, production,
Photos 1–5), demonstrating useful variability
and demonstrating the effectiveness of the
work done by plant breeders.
World production of tomatoes has increased
steadily during the twentieth century and has
grown considerably over the past three decades.
It rose from 48 million tonnes in 1978
to 74 million in 1992, 89 million in 1998,
and reached 124 million in 2006. Among the
16 countries that produced 1 million tonnes
or more, six are well above 5 million tonnes
(Table 2). An estimated 30% of tomatoes produced
are processed, but this percentage varies
from one country to another.