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Introduction to the Characteristics of the Potato Variety Bashu No. 9

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Variety origin: Bashang Agricultural Science Research Institute of Zhangjiakou Prefecture, Hebei Province, in 1958 used "Duozibai" (292-20) as the female parent and "Epoka" as the male parent for crossing, and in 1972 it was developed and named, and began to be promoted. It was approved as a national-level variety by the National Crop Variety Approval Committee. Main traits: plant type semi-upright, with relatively many branches, plant height about 60cm, stems green, strong growth vigor; leaves green, moderate amount of hairs, compound leaves relatively large, lateral leaflets 4 pairs; inflorescence peduncle green slightly

Variety origin: Bashang Agricultural Science Research Institute of Zhangjiakou Prefecture, Hebei Province, in 1958 used "Duozibai" (292-20) as the female parent and "Epoka" as the male parent for crossing, and in 1972 it was developed and named, and began to be promoted. It was approved as a national-level variety by the National Crop Variety Approval Committee.

Main traits: plant type semi-upright, with relatively many branches, plant height about 60cm, stems green, strong growth vigor; leaves green, moderate amount of hairs, compound leaves relatively large, lateral leaflets 4 pairs; inflorescence peduncle green slightly tinged with purple, pedicel articulation colored, corolla white, stamens yellow, stigma with 3 lobes, naturally non-fruiting; tubers long oval, skin and flesh both white, skin smooth, large tubers mostly relatively uniform, tuber set concentrated; semi-light-sprouted, young sprout base round, pink, tip pointed, light purple, few hairs; tuber dormancy period short, storability medium. Medium maturing, growth period about 90 days; steaming quality medium, tubers large, suitable for vegetable use; processing quality: dry matter 18.5%, starch about 14%, reducing sugar 0.31%, crude protein 1.67%, vitamin C 13.8mg/100g; the plant is relatively resistant to late blight, tubers not susceptible, lightly susceptible to ring rot, shows mild mosaic and leafroll virus symptoms; yield per 667 sq m about 1000-1500kg, high yield can reach more than 2000kg.

Suitable growing areas: mainly distributed in Hebei Province and Beijing Municipality, and there is also a relatively large cultivated area in Tengxian, Shandong.

Key points of cultivation techniques: because this variety emerges early, forms tubers early, and bulks up quickly, it is necessary to adopt yield-increasing measures such as early watering and early topdressing, so as to bring the maximum yield potential into play; the suitable planting density is 3000-3500 plants per 667 sq m. It is relatively suitable for spring sowing and intercropping or relay intercropping in double-cropping regions.

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