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ＧＢ０２８Ｓ是辽宁省盐碱地利用研究所采用系谱法与混合法相结合选育的起点温度低（２１～２２℃）、光敏温度范围宽（２１～２８℃）、安全不育期长（在辽宁为２５ｄ）、繁殖和制种产量高，杂种优势强的粳型光敏核不育系。该不育系在选育地的育性转换日长为１４．０ｈ，自然长光条件下，花粉败育率为１００％，自交不实率为１００％，在海南自然短光下繁殖，自交结实率达４０％～５０％。在选育地制种，异交结实率在３０％以上。各项技术指标均达到或超过“８６３”两系专题规定的鉴定标准。１９９６年８月通过辽宁省科委组织的技术鉴定。
GB028S is a low temperature starting point (21 ~ 22 ℃), a wide range of light temperature (21 ~ 28 ℃) and a long sterile period (25 days in Liaoning Province) by using pedigree method and hybrid method in Liaoning Institute of Saline- , Breeding and seed production of high heterosis and japonica photo-sensitive genic male sterile line. The length of fertile transformation of CMS at breeding site was 14.0h. Under natural light conditions, the pollen abortion rate was 100% and self-incompatibility rate was 100% Self-solid rate of 40% to 50%. Breeding in breeding, outcrossing rate of 30% or more. The technical indicators have reached or exceeded the “863” two lines of the provisions of the identification criteria. August 1996 by the Liaoning Provincial Science and Technology Commission organized the technical appraisal.