Table 8. Effects of shading on starch pasting viscosity of rice flour during 30 d after heading (2011).

Varieties	Treatments	PKV (RVU)	HPV (RVU)	CPV (RVU)	SBV (RVU)	BDV (RVU)	PaT (°C)
IIyou 498	CK	258.08±2.34a	148.47±2.79a	279.58±3.98a	21.50±2.30b	109.61±1.57a	77.55±0.05a
	Shading	234.42±2.73b	138.89±6.77b	274.31±3.90b	39.89±5.19a	95.53±8.56b	77.57±0.10a
Gangyou 188	CK	223.06±2.96a	136.50±4.33a	281.44±2.04b	58.39±0.92b	86.56±2.28a	78.28±0.03b
	Shading	193.14±2.12b	132.25±4.45a	310.97±1.93a	117.83±3.99a	60.89±6.56b	80.78±0.03a
Gangyou 527	CK	211.75±2.82a	118.75±6.17a	264.67±3.84a	52.92±3.06b	93.00±4.45a	79.95±0.05b
	Shading	191.58±0.29b	112.83±3.56b	260.56±2.36a	68.97±2.56a	78.75±3.77b	80.78±0.03a
Chuanxiang 9838	CK	228.64±1.55a	130.17±7.30a	292.61±7.68a	63.97±6.78a	98.47±6.84a	78.32±0.03b
	Shading	223.31±1.75b	122.28±1.35b	279.58±1.61b	56.28±2.80b	101.03±2.03a	79.37±0.03a
Dexiang 4103	CK	247.03±2.95a	97.78±6.83a	175.14±7.17a	−71.89±4.25b	149.25±3.90a	71.80±0.09a
	Shading	226.92±3.17b	92.42±1.96b	167.94±1.73b	−58.97±1.54a	134.50±1.23b	72.10±0.56a
F-value	L	623.92**	46.55**	0.00	271.52**	92.30**	181.55**
	V	449.79**	298.79**	1951.51**	1966.68**	278.84**	1842.82**
	L×V	25.90**	0.97	54.96**	82.61**	10.74**	38.21**

L, light intensity; V, variety; PKV, peak viscosity; HPV, hold viscosity; CPV, final viscosity; SBV, setback; BDV, breakdown; PaT, pasting temperature; and RVU, rapid visco units.

Values in columns represent the significant differences between CK and shading treatments, (p<0.05). Means ± standard, n = 3.

^**significant at 0.01 level.