Breeding of a new Chinese yam cultivar Zishiyao 18
Zishiyao 18 is a recently released variety of Chinese yam that was selected and developed from a mutant of the local characteristic cultivar Zishiyao in Taizhou,Zhejiang province.Typically,its each plant yields one to two cylindrical tubers,which are approximately 26.9 cm in length and 8.3 cm in diameter.The tubers weight of a single plant average ap-proximately 1.1 kg with brown skin,few fibrous roots,and purple-colored flesh that is notably powdery.The contents of dry mass,starch,soluble sugar,and protein in the tuber were recorded as 32.3 g·100 g-1,21.1 g·100 g-1,0.9 g·100 g-1,and 2.41 g·100 g-1,respectively.The variety exhibits enhanced field resistance to anthracnose compared with Zishiyao.Generally,667 m2 yield is approximately 1700 kg.Zishiyao 18 is well-suited for cultivation in Taizhou,Zhejiang,and similar regions.
Chinese YamNew varietyZishiyao 18Systematic selection