Characteristics, Traits and Cultivation Points of the Gangyou 151 Rice Variety

(1) Variety source: This is a late-maturing indica combination developed by Jiangshan City Seed Company and the Sichuan Provincial Seed Station by test-crossing Gang 46A with Jianghui 151 (Gui 630/IR9761-4-3-2).

(2) Characteristics and traits: The whole growth period is 153.0 days, 2-3 days longer than Shanyou 63. Plant height is 119.2 cm, average grains per panicle is 170.6, seed setting rate is 81.9%, and 1000-grain weight is 29.0 g. Seedling vigor is strong, plant type is moderate, stems are firm and leaves are erect, and tillering ability and effective panicles are inferior to Shanyou 63. Late-stage yellowing is good. Brown rice rate is 81.1%, milled rice rate is 70.0%, and head rice rate is 47.6%. Processing, appearance and eating quality are comparable to Shanyou 63. In identification of rice blast resistance, leaf blast was grade 6-8 and neck blast was grade 7; resistance is better than the control.

(3) Yield performance: In the Sichuan provincial regional trial from 1995-1996, the two-year average yield was 567.14 kg per mu, 4.64% higher than the control Shanyou 63. In the 1996 production trial, the average yield per mu was 586.63 kg, 8.62% higher than the control Shanyou 63.

(4) Suitable planting areas: Suitable for planting in areas where Shanyou 63 is planted, especially under high-fertility and high-water conditions in northwestern Sichuan, where high yields are more easily obtained.