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由广东省农科院水稻研究所承担的国家“８６３”计划和广东省重大科技攻关项目“两系法杂交稻研究”取得阶段性成果，选育出优质光温敏不育系ＧＤ－１Ｓ，并配制出适于本省推广的新组合。该项研究于１９９９年６月通过了科学技术成果鉴定。该项目取得了如下几方面进展：（１）?
The national “863” project undertaken by the Rice Research Institute of Guangdong Academy of Agricultural Sciences and the “Two-line Hybrid Rice Research”, a major project of scientific and technological research in Guangdong Province, achieved phased achievements and selected high-quality photo-thermo-sensitive genic male sterile line GD- And prepare a new combination for promotion in our province. The study passed the scientific and technological achievements appraisal in June 1999. The project has made the following progress: (1)?