湖北光敏感核不育水稻不育性的遗传与利用研究

1980年开始以农垦58s、双8-14s 为材料,进行光敏感核不育水稻的遗传、光周期诱导、生理生化及利用研究。农垦58s 与农垦58品种杂交,光敏核不育性表现为一对主效基因控制的遗传行为,农垦58s 与不同生态型的早、中、晚粳品种杂交,表现为复杂遗传行为,光敏性与感光性呈独立遗传,但感光性对光敏不育性表达起重要调节作用。阐明了农垦58s育性转换的敏感期、光长、光质、光间断作用和红光远红光效应。开展了激素、多胺、总RNA 和酶系统研究,提出了光敏核不育性的调控模型。成功转育多种类型籼、粳光敏感核不育系,两系杂交稻开始在生产上利用。

PREDICTION OF TROPICAL DISTURBANCE DEVELOPMENT OVER THE SOUTH CHINA SEA USING SSM/I DATA

This paper proposes a method for predicting the development of tropical disturbance over the South China Sea(SCS)based on the total latent heat release(TLHR)derived from the Special Sensor Microwave/Imager(SSM/I)satellite observations.A threshold value of daily mean TLHR(3×1014 W)for distinguishing the non-developing and developing tropical disturbances is obtained based on the analysis for 25 developing and 43 non-developing tropical disturbances over the SCS during 2000 to 2005.If the mean TLHR within 500 km of a disturbance on the latest day and its daily mean TLHR during previous life are both greater than 3×1014 W,the disturbance will be a developing one in the future.Otherwise,it is a non-developing one.A real-time testing prediction of tropical cyclogenesis over the SCS was conducted for the years 2007 and 2008 using this threshold value of TLHR.We find that the method is successful in detecting the development of 80%of all tropical disturbances over the SCS in 2007 and 2008.

水稻光敏感核不育系和两系杂交稻选育研究

以双8-14s、105s 为光敏感核不育基因供体,以国内外不同类型的籼稻和粳稻品种为受体亲本,采用杂交、辐射及单株系谱选育方法选育出多种类型籼稻和粳稻光敏核不育系,籼型如8902s、8906s、8912s 和8920s 等,粳型有 WD_ls、M105-9s等.初步育成两系杂交中籼组合8902s/明恢63、8902s/明恢72、8906s/特青2号、8912s/明恢63等,两系晚粳组合 M10s-9s/反5-2等,以及两系亚种问组合8912s/轮回422、8902s/UG28、8902s/Varylava等,并已开始生产性试种.