【摘 要】
：
具有长日照不育、短日照可育特性的晚粳水稻农垦58的发现,已引起广泛的研究与利用。据研究,这种光敏核不育水稻(简称农垦58s),从幼穗分化的第二枝梗及颖花原基分化期进入光
【机 构】
：
河南省农科院粮食作物研究所,河南省农科院粮食作物研究所,河南省农科院粮食作物研究所,
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具有长日照不育、短日照可育特性的晚粳水稻农垦58的发现,已引起广泛的研究与利用。据研究,这种光敏核不育水稻(简称农垦58s),从幼穗分化的第二枝梗及颖花原基分化期进入光照育性诱导阶段,其临界光长为13.75～14.00小时。据此推论,在高于32°N的地区,直接利用农垦58s繁殖、制种均有困难,薛光行等在北京(39°56′N)的研究结果证明了这一点。为明确和验证农垦58s在郑州地区(34°49′N)的直接利用价值,1988～1989年对其育性转换期进行了研究。
The discovery of Nongken 58, a late Japonica rice with long-day sterility and short-day fertility, has aroused extensive research and utilization. According to the research, the photo-sensitive genic male sterile rice (Nongken 58s) entered the stage of photo-fertility induction from the differentiation stage of spikelet and spike primordia, and the critical light length was 13.75-14.00 hours. Based on this, it is concluded that it is difficult to seed and grow directly at Nongken 58s in areas above 32 ° N, as evidenced by the research by Xue Guangxing et al. In Beijing (39 ° 56’N). In order to clarify and verify the direct utilization value of Nongken 58s in Zhengzhou area (34 ° 49’N), the fertility transition period was studied from 1988 to 1989.
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