Introduction to Virus-Free Sweet Potatoes and Their Excellent Varieties

Virus-free sweet potatoes refer to sweet potatoes obtained through virus-elimination technology and confirmed by strict virus testing to be free of certain viruses, as well as their offspring bred in aphid-free and pathogen-free soil.

At present, viral diseases have become an important cause of the degeneration of seed performance, yield decline and quality deterioration of sweet potatoes in Henan Province, while virus-free sweet potatoes can generally increase yield by more than 30%, and their quality and appearance are also improved. Therefore, selecting virus-free sweet potato seedlings is the prerequisite for achieving high sweet potato yields.

Sweet potatoes for starch processing

Xushu 18: Virus-free Xushu 18 increases yield by about 40% compared with non-virus-free Xushu 18, with a dry matter rate of 30% and a starch rate of 20%. In addition, virus-free Xushu 18 plants grow robustly, are highly tolerant to poor soil, have broad adaptability, and are highly resistant to root rot (rot root disease), with a yield of more than 2500 kg per mu.

Yushu No. 13: Highly resistant to root rot, resistant to stem nematode disease, with shorter stems and vines. Its starch content is close to that of Xushu 18, and its yield is more than 10% higher than that of Xushu 18. The yield of spring sweet potatoes can reach more than 3000 kg per mu, and the yield of summer sweet potatoes can reach more than 2000 kg per mu.

Rushu Huang: This variety was selected and bred from 134 sweet potato varieties. After virus elimination, it has strong drought resistance, is highly resistant to stem nematode disease and root rot, has a dry matter rate of 32.9%, and a fresh sweet potato yield of about 3000 kg per mu, with a high rate of large tubers; both the skin and flesh of the tubers are yellow. Sweet potatoes for food and commercial use

Sushu No. 8: This variety has short vines, strong drought resistance, resistance to stem nematode disease and black spot disease, but is not resistant to root rot. The yield of spring sweet potatoes can reach 4000 kg per mu, and the yield of summer sweet potatoes is more than 3000 kg per mu, with good taste when cooked.

Yushu No. 12: This variety is tolerant to waterlogging. The yield of summer sweet potatoes is generally more than 2500 kg per mu, about 20% higher than that of Xushu 18, and the starch rate is equivalent to that of Xushu 18. It is resistant to root rot, has a floury and sweet taste, and is excellent for both processing and eating.