Ｄ优 6 8是四川农业大学水稻研究所用自育的高异交率优良不育系Ｄ 6 2Ａ作母本 ,用内江市农科所培育的多恢1号作恢复系组配而成。 1997年 5月通过四川省农作物品种审定委员会审定。该品种于 1996年引进信阳市 ,2 0 0 0年通过河南省农作物品种审定委员会认定。在 1996～ 1999年 D You 6 8 is a high-yielding male sterile line D 6 2A with self-raised Rice Research Institute of Sichuan Agricultural University as a female parent. May 1997 approved by the Sichuan Crop Variety Approval Committee. The variety introduced in Xinyang City in 1996, 2000 by the Henan Province Crop Variety Approval Committee finds. In 1996 ~ 1999