In the large
family of the Oryzae an important position is occupied
bythe species Oryza Sativa which is divided into
four subspecies with two of these being the most
noted: the subspecies Japonica and Indica.
as it is cultivated more the specie THAIBONET which
belongs in specie's Indica. The Indica
varieties are characterized by a translucent grain
with a lower starch content and are commonly called
The specie Japonica, characterized by a "starchy
amylaceous pearl" grain, and commonly called
"variety non crystalline".
The rice plant Oryza Sativa is a graminea annual
that produces flowers whose organs are protected
by empty and by flowering glumes. At the mo-ment
of blooming these flowers open
for a few minutes
and it is then that fertilization takes place which
is generally by self-pollination. From the time
of its conception the rice grain will take 40/60
days to reach maturity and will be called paddy.
Its composition is clearly shown in diagram 1. An
important distinguishing factor, also gastronomic
ally, is the presence of the "pearl";
(see photographs A & B). Rice grains can appear
totally translucent with a crystalline structure
or they can have a "pearl" an opaque central
zone where the amylaceous structure is farinaceous;
a distinction that also contributes to their different
behaviour in cooking.