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上海市农科院作物所用BT型农进2号不育系为母本,中熟晚粳寒丰为父本,采用回交转育法,经过8年时间的试验观察,最近育成了BT型晚粳稻寒丰不育系。日前通过专家鉴定。寒丰不育系,不育性稳定,不育株率和不育度均达到不育系的要求。用它配制的杂交组合。具有配合力强,杂种优势明显和产量高,米质佳等特点。1987～1989年参加上海市杂交粳稻区域试验和南方稻区杂交粳稻(双、单季)区域试验,产量均名列前茅,一般亩产550公斤,高的可达650公斤以上,比对照增产10％左右。用寒丰不育系配制的“寒优
Shanghai Academy of Agricultural Sciences BT type of farmland into the male sterile line 2 as the female parent, maturing late Japonica Hanfeng as the male parent, using backcrossing method, after eight years of experimental observation, recently bred BT type Late Japonica cold Feng sterile line. Recently passed expert appraisal. Hanfeng sterile line, sterile stability, sterile plant rate and sterility are to meet the requirements of sterile lines. Use it to prepare the hybrid combination. With the strong, heterosis obvious and high yield, good quality rice and so on. From 1987 to 1989, he took part in the regional experiment of japonica hybrid rice in Shanghai and the hybrid rice (double and single season) in the southern rice region. The yield was ranked first, with a yield of 550 kg per mu and a high of 650 kg or more, about 10% more than that of the control . Han Feng sterile line with the preparation of "Han excellent