1 Institute of Industrial Crops，Jiangsu Academy of Agricultural Sciences，Nanjing 210014，Jiangsu，China；2 Xuzhou Institute of Agricultural Sciences in Jiangsu Xuhuai Area，Xuzhou 221131，Jiangsu，China
苏蓣1 号是从浙江紫莳药中通过系统选育方法筛选出的块状山药新品种。该品种属于粗短块状紫山药，生育期中等偏迟，155 d（天）左右。单株结薯2 个左右，块茎表皮紫褐色，肉紫色，长25 cm 左右，周长20 cm 左右，质量1.0 kg 左右，花青素和淀粉含量分别高达9.28‰和23.9%，不结零余子，每667 m2 产量可达2 000 kg。适宜于江苏全省范围露地种植，优先推荐在沿江地区推广应用，适宜于机械化操作。
‘Suyu No.1’ is a new bulk purple yam variety developed from‘ Zhejiangzishiyao’ through the systematic breeding method．The yam tuber is of thick and short shape，with purple brown skin and purple flesh，approximately 25 cm in length and 20 cm in circumference．It displays a medium growing period with about 155 days，and usually produces 2 yam tubers for a single plant．The yam weight of a single plant is about 1.0 kg，and anthocyanin and starch contents are 9.28‰ and 23.9%，respectively．This variety does not produce yam bulbil，and average yield is 30 t·hm-2．This purple yam variety is suitable for open cultivation in Jiangsu Province．It is recommended to plant in the areas along the Yangtze River through mechanized operation．
