What varieties of purple sweet potato are there? Top 10 high-quality, high-yield varieties recommended
Purple sweet potato has become a new favorite in the past two years. Compared with ordinary sweet potato, it not only has a beautiful color, but also is very nutritious to eat. In addition, it is rich in selenium and anthocyanins. Eating it can prevent high blood pressure and reduce liver dysfunction. Many people want to grow such a good purple sweet potato, but do you know what varieties of purple sweet potato there are? Let's learn about them together.
1. Jizishu No. 1
Jizishu No. 1 is currently the purple sweet potato variety with the highest content among similar domestic varieties, bred by the Shandong Academy of Agricultural Sciences. Jizishu No. 1 has high dry matter and starch content. In hilly and mountainous areas, the dry matter and starch contents reach 41% and 27% respectively. Fresh tuber yield is high, and spring sweet potato yield can reach more than 2500 kg per mu; it is highly resistant to sweet potato black rot and has good storability; its processing quality is good and its flavor is unique. It is currently the preferred variety for enterprises to extract pigments, process sweet potato puree, and whole flour.
2. Xuzishu No. 8
Xuzishu No. 8 was bred by the Xuzhou Institute of Agricultural Sciences in the Xuhuai area of Jiangsu. It has purple skin and deep purple flesh. Fresh tubers are harvested 80-90 days after planting. Its starch content is 18%, and soluble sugar content is 3-4%. After storage, soluble sugar can reach about 6%. When steamed or boiled, it has a fragrant, glutinous, mealy, and sweet taste with excellent eating quality; it has good tuber-setting habits and a high marketable tuber rate. Spring sweet potato yield is about 3500 kg per mu, and summer sweet potato yield is about 2300 kg/mu.
3. Qinzishu No. 2
Qinzishu No. 2 is an edible-type purple sweet potato variety bred by the Baoji Institute of Agricultural Sciences. This variety has smooth skin, an attractive tuber shape, good marketability, high anthocyanin content, less crude fiber, a delicate texture, and excellent taste when cooked. Compared with similar varieties, it has greater yield-increasing potential and good market prospects. Generally, spring sweet potato fresh yield is more than 2500 kg per mu, and summer sweet potato fresh yield is about 1500 kg per mu. It is moderately resistant to stem nematode disease and stem rot, and susceptible to sweet potato black rot and root rot.
4. Zishu Xinyin No. 1
Zishu Xinyin No. 1 is a fresh-eating-type variety and is also currently the main edible purple sweet potato variety planted on the market. The tuber shape is long spindle-shaped, the skin is smooth, purple-black and glossy, and the flesh is deep purple. After the tuber is broken, purple liquid flows out. Wiping it with a hand immediately dyes the hand purple, making it the best variety for extracting purple-red pigment. Zishu Xinyin No. 1 has strong disease resistance, good storability, good sprouting ability, high seedling output, a delicate taste, and good eating quality when cooked. It is suitable for steaming and roasting.
5. Guangzishu No. 8
Guangzishu No. 8 was bred by the Crop Research Institute of the Guangdong Academy of Agricultural Sciences. Its tubers are long spindle-shaped, with purple skin and purple flesh. Each plant sets 6.8 tubers, and the rate of large and medium tubers is 71.9%. Tuber setting is concentrated and neat. It has high anthocyanin content, smooth tuber surface, relatively uniform tubers, and good storability. Tuber dry matter rate is 29.92%, starch rate is 19.68%%; anthocyanin content is 38.6 mg/100 g fresh tuber; eating quality is excellent. It is resistant to stem rot and moderately resistant to sweet potato blast.
6. Zhezishu No. 1
Zhezishu No. 1 is an edible-type purple sweet potato bred by the Zhejiang Academy of Agricultural Sciences. It tastes mealy and sweet, and has good storability. The average anthocyanin content is 16.58 mg/100 g fresh tuber. It has good sprouting ability, medium-long vines, an attractive shape, smooth skin, and spindle-shaped or long spindle-shaped tubers; dry matter rate is 33-36%. It tastes mealy and sweet, and has good storability. Under conventional cultivation, the growth period is more than 135 days, the planting density is 3500-4000 plants per mu, and the fresh tuber yield is 1800-2200 kg per mu. Under early-maturing cultivation, it is harvested in 90-120 days.
7. Wanzi 56
Wanzi 56 is a high-anthocyanin-type variety. Each plant has 7-9 basal branches, and each plant sets 4-5 tubers. The tubers are short spindle-shaped, with purple skin and purple flesh. Tuber setting is concentrated, the tubers are relatively neat, and the rate of marketable tubers is more than 72%. The tubers have good sprouting ability, and the growth period is more than 120 days; it is highly resistant to root rot, resistant to stem rot, moderately resistant to stem nematode disease, and has good storability; summer sweet potato tuber dry matter rate is 24-26%, and the cooked eating quality is relatively good.
8. Longjinshu No. 3
This variety was cultivated by the Longyan Longjin Crop Variety Research Institute. Each plant sets about 4 tubers, the rate of large and medium tubers is 85.9%, the tubers are spindle-shaped, the skin is purple, the flesh is purple, and it is relatively resistant to storage. The whole growth period is about 130-140 days. It has the characteristics of high and stable yield, strong disease resistance, an attractive appearance, and high commercial value.
9. Xuzishu No. 1
Xuzishu No. 1 is a new purple-fleshed variety. Its fresh tuber yield is stable at more than 2000 kg per mu, 3-5 times higher than the Japanese purple-fleshed varieties "Shanchuanzi" and Ayamurasiky. This variety has red skin and purple flesh. When cooked, the tuber flesh is bright purple and tastes relatively good. The suitable density is about 3300 plants per mu. It is relatively tolerant of late planting, and waterlogging has a relatively large impact on yield. It is suitable for planting in most areas of northern China and the middle and lower reaches of the Yangtze River.
10. Nanzishu 008
Nanzishu 008 is a new variety bred by the Nanchong Academy of Agricultural Sciences in Sichuan Province. This variety has purple-red top leaves, green mature leaves of medium size, long spindle-shaped tubers, purple skin, purple flesh, smooth skin, an attractive tuber shape, and excellent cooked eating quality. Under spring cultivation, the fresh tuber yield is generally about 19500 kg/hectare, and the vine and leaf yield is about 31500 kg/hectare. Under autumn cultivation, the fresh tuber yield is 9750 kg/hectare, and the vine and leaf yield is 12750 kg/hectare. Cultivating this variety as an autumn sweet potato can not only increase fresh tuber yield, but also provide fresh green feed for the breeding industry in autumn and winter.
The above is an introduction to purple sweet potato varieties. Among these 10 varieties, which one do you most want to plant?
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