Characteristic and trait introduction of the potato variety Chuanyu Zao

Breeding unit: Crop Research Institute, Sichuan Academy of Agricultural Sciences.

Approval status: approved by the Sichuan Provincial Crop Variety Approval Committee in 1991, and by the National Crop Variety Approval Committee in l998.

Variety registration number: Guoshen Shu 980002.

Variety source: 7032-2X Yanzi.

Characteristics and traits: plant height about 58 cm, plant semi-erect, 3-4 branches, white corolla, elliptical leaves, elliptical tubers, yellow tuber skin, yellow tuber flesh, shallow eyes, excellent taste. Crude protein content 2.65%, starch content 12.71%, reducing sugar 0.4%, vitamin C content 15.6 mg/100 g fresh tubers, drying rate 19.96%, large tuber rate above 85%, smooth tuber skin, relatively good marketability. Growth period about 70 days, resistant to PVY and PLRV, bacterial wilt incidence 4.6%, short dormancy period, average fresh tuber yield about 1450 kg per mu, can be used as a variety for fresh eating and food processing.

Cultivation points: density about 5000 plants per mu, use 30-50 g whole tubers for planting, pay attention to preventing bacterial wilt.

Suitable range: for spring and autumn cultivation in the southwest potato region and the Yangtze River basin potato region, and for suburban vegetable planting.