Juliano et al. - 1993 - Grain Quality Evaluation of World Rices

(r = –0.55**, n = 239). Amylograph setback correlated with alkali
spreading value ( r = 0.45**, n = 212) and GC ( r = –0.46**, n = 144).
Sri Lanka
A
nnual
rough rice production in Sri Lanka was 2.1 million t in
1989 (FAO 1990b). Annual consumption of milled rice per
capita in 1979-81 was 95 kg (FAO 1984). Milled rice supply per
capita in 1986-88 was 101 kg (FAO 1990a, IRRI 1991). Parboiled rice is
preferred in most of the country, except in the south (RCMD 1987).
Bg34-8, Bg94-1, and Bg276-5 (3-3.5-mo rices) comprised 52% of the
total rice area in 1982-83 (Dalrymple 1986). Bg11-11, Bg90-2, Bg379-2,
and Bg400-1 are 4-4.5-mo varieties; Bg3-5 is 5-6 mo. Consumers in
Kandy district prefer undermilled red parboiled rice with medium
grain size (Breckenridge 1979). A local red and a white milled rice from
the market had high AC and intermediate GT (RCMD 1987).
Grains had short or medium length and medium or bold shape.
Roundish milled (short bold) grains about 4 mm long and 2.3-3.1 mm
wide characterized Podiwi A-8 and Bgl1-11 (Appendix). These samba
varieties were probably priced over the medium-sized and -shaped
grain varieties because of intermediate GT, medium-soft GC, and
roundish shape. All had high AC. Many of the varieties had red
pericarp (such as H-4). Varieties differed in Amylograph viscosity and
cooked rice hardness, despite the narrow AC range (Table 5). Some did
not show distinct Amylograph peak viscosity but instead reached a
plateau even less than 500 BU.
Cooked rice hardness correlated with stickiness (r = –0.71**, n = 31).
Protein content correlated with grain length (r = –0.53**, n = 30),
Amylograph peakviscosity (r = –0.44**, n = 46) and setback (r = 0.52**),
and cooked rice stickiness (r = –0.48**, n = 31). Grain length correlated
with Amylograph peak viscosity (r = 0.54**, n = 22).
Taiwan, China
T
aiwan,
China, produced 2.4 million t of rice in 1989 (FAO
1990b). About 89% was short-grained japonica with relatively
low AC. Only 3.6% was waxy rice, and the rest, indica rice
(Huang 1987). Per capita consumption of milled rice was 133 kg in
1964-66,105 kg in 1980, and 85 kg in 1986 (Huang 1987) and in 1988
(Duff 1991). The population prefers short-grained japonica rice with
Asia 29