Brief introduction of two varieties of sweet potato

1. Zhejiang Shu 13

Identification number: Zhejiang recognition potato 2005002

Breeding unit: Zhejiang Academy of Agricultural Sciences as nuclear institute

Variety source: Zhejiang 3481 × Zhejiang 255

Yield performance: according to multi-point experiments for many years, the average yield of fresh potato per mu is about 2500 kg, which is more than 10% higher than that of Xushu 18.

Characteristics: it is a mid-late mature variety, the whole growth period of open field planting is about 135 days, and it is easy to bud and blossom in autumn. Long vine, strong growth potential, large leaves, heart-shaped toothed leaves, dark green leaves, purplish red veins, green stems. 2.7 tubers per plant, the rate of large and medium potatoes is 80.7%, the commercial potato pieces are short spindle when mature; the potato skin is purplish red, the potato meat is orange; the skin is smooth, there is no longitudinal groove, the root hair on the surface is less, the appearance of the potato pieces is beautiful, and the marketability is good; the taste powder, sweet taste, fresh potato soluble sugar 8.0%, potato block drying rate 35.8%, flour yield 21.96%; medium resistance to black spot The storage resistance of potato is good, seed potato germinates quickly, the seedling stage grows vigorously, drought tolerance, barren tolerance, too much nitrogen fertilizer is easy to grow.

Key points of cultivation techniques: this variety is suitable for raising seedlings in protected field in early March and in open field in early April. It is suitable for early planting for starch processing to increase starch content, and for edible and roasted potato processing, it should be planted from late May to early June and harvested in mid-late October.

It has the advantages of high yield, high drying rate and flour yield, excellent edible quality and processing performance, beautiful potato type, drought resistance and barren resistance. it can be used as a variety for edible, starch processing and baked potato processing, and is suitable for popularization and application in the whole province.

2. Sweet potato gold jade (formerly known as Zhejiang 1257)

Identification number: Zhejiang recognition potato 2005001

Breeding unit: Zhejiang Academy of Agricultural Sciences as nuclear institute

Variety source: Zhe 73 half 2 × Sushu 2

Yield performance: according to many years of trial planting, the general commercial fresh potato (less than 180g) produces about 1200 kg per mu.

Characteristics: it is an early-maturing variety, the suitable harvest time for spring potato is about 130 days (from planting to harvest), and that for summer and autumn potatoes is about 110 days. The plant type is grape, the stem and leaf is green, there are about 5 tubers per plant, the rate of small and medium potatoes is high, the red skin of tubers is yellow, the skin is thin and smooth, the short spindle shape is good, the commodity is good; the total soluble sugar is 10.76%, the crude fiber is 0.93%; the taste is sweet, delicate, palatable, the flavor is good, the quality is excellent.

Key points of cultivation techniques: the variety should choose flood-drought rotation land or newly opened red-yellow soil, plant early in time, properly increase cultivation density, horizontal cutting, 3-4 nodes into the soil, less nitrogen fertilizer should be applied to autumn potato to prevent overgrowth, and pay attention to the prevention and control of vine cutting disease.

Conclusion: this variety has good early maturity, good fresh food quality and good commercial quality, so it is suitable to be popularized and planted as fresh sweet potato varieties in the whole province.