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文章叙述并用图解说明一个长达六年之久的育种程序。简略情况如下:首先,成对隔离杂交。其中一部分为具备自交亲和性和单粒性的保持系,易感由 Cercosporabetcola 引起的褐斑病和由 BNYVV 引起的
The article describes and illustrates a six-year-old breeding program. Briefly the situation is as follows: First, isolate the hybridization in pairs. Some of these are maintainer lines with self-compatibility and monogamy, susceptible to brown spot caused by Cercospora Betcola and caused by BNYVV