(52(4):247-257)Breeding of a New Sweet Potato Variety Tainung No. 72

嘉義農業試驗分所在八十六年秋作由甘藷逢機交配族群雜交後裔所培育之實生系選出優良品系CYY86-01，經品系產量比較試驗、區域試驗及栽培試驗後於92年3月21日經農委會複審會議通過，正式命名為臺農72號，商品名稱為黃金香薯。在全省兩年五地點之區域試驗結果顯示，臺農72號之塊根產量平均較對照種臺農57號增產11.2％，另外根據食品工業發展研究所之化學分析結果，顯示本品種之還原糖、胡蘿蔔素、維生素C、鈣、磷等成分皆較對照種臺農57號高，且本品種在適當之栽培密度、施肥量及採收期下，適合作為烤藷（中藷）之塊根產量約較臺農57號提高一倍左右，故本品種不僅可作為鮮食用，亦可作為加工業者製作烤藷之材料。The sweet potato clone, CYY86-01, was selected from the progenies of a polycross population through primary and advanced yield trials, regional trials, planting time and fertilization trials. It was formally designated as Tainung 72 (TNG 72) by Council of Agriculture, Executive Yuan on March 21, 2003. The mean storage root yield of TNG 72 was 11.2% higher than the check variety, TNG57, in regional trial, and contained higher reducing sugar, carotenoid, vitamin c, calcium and phosphorus contents than the check variety, TNG57. When Tainung 72 is cultivated with appropriate planting density, fertilization, and harvesting time, the yield of middle size tubers were two-fold of TNG57 variety. Therefore, Tainung 72 can not only be used as table-use, but also is a good material for baking