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岩薯5号（原代号B2-5）系由福建省龙岩市农科所于1991年以岩齿红为母本，岩94－1为父本有性杂交选育而成，1997年3月通过福建省农作物品种审定委员会的审定。产量表现1994－1995年参加福建省甘薯良种区试结果，岩薯5号鲜薯单产分别为40570．skg／nd。40822．skg／nd，比对照新
Yanzhu No.5 (formerly B2-5) was selected from the 1991-1997 Long Rocks Institute of Agriculture in Fujian Province with the rock dentine as the female parent and the rock 94-1 as the male parent sexual hybrid. In March 1997 Approved by the Fujian Provincial Crop Variety Approval Committee. Yield performance 1994-1995 to participate in the Fujian sweet potato region test results, fresh sweet potato Iva 5 No. 40,070. skg / nd. 40822. skg / nd, newer than the control