Introduction to the Characteristics of the Gangyou 906 Rice Variety

(1) Variety source: A medium-indica late-maturing hybrid rice developed by the Chengdu Second Agricultural Science Institute by crossing the self-bred restorer line Rongdao 906 (original code 48-6) with Gang 46A.

(2) Characteristics: This combination has vigorous seedling growth, strong tillering ability, uniform growth, and a compact plant type. The whole growth period is about 145 days, 0.8 days longer than Shanyou 63. Plant height is 114 cm, panicle length is 23.4 cm, filled grains are 144, seed-setting rate is 86.2%, 1000-grain weight is 26.8 g, brown rice rate is 80.2%, milled rice rate is 70.6%, and the grain has very small chalkiness in the center and belly and is semi-transparent. In resistance identification, leaf blast was grade 4-7, neck blast was grade 5-7, superior to Shanyou 63, and it was lightly susceptible to sheath blight.

(3) Yield performance: In 1995-1996, it participated in the provincial regional trial medium-indica late-maturing Group C and Group A. The two-year average yield was 565.22 kg per mu, an increase of 4.28% over the control Shanyou 63. In 1996, in production trials in 5 cities and counties, the average yield was 589.59 kg per mu, an increase of 6.98% over Shanyou 63. In Shizhu County in 1996, a production demonstration of 1500 mu had a yield of 554.5 kg per mu, an increase of 8.7% over Shanyou 63.

(4) Suitable planting areas: This combination is suitable for planting in southern Sichuan, central Sichuan, western Sichuan, and other areas.