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省农业厅今年8月10—18日在天门白茅湖棉花原种场召开了棉花原种繁育技术会议。参加会议的有23个良种场及荆州、黄冈、宜昌等专区农科所的代表共41人。会议通过现场参观、技术表演、小组讨论、典型发言,交流和总结了棉花原种繁育经验,探讨了若干繁育技术问题。 1.棉花原种繁育方法问题:开始有人主张用品种内杂交法,也有人主张用分系繁育法。通过反复讨论,一致认为,当前应主要采用分系繁育法(即单株选择,分系比较,混系繁殖法)。这是因为品种内杂交法要花四年时间产生原种,而且技术比较复杂,目前的条件不容易掌握;而分系繁育法生产周期较短,三年可以生产原种,技术比较简便,既适合目前更新的需要,又适应当前良种场技术条
Provincial Department of Agriculture August 10-18 this year at the Tianmen Bai Maohu cotton seed field held a cotton seed breeding technology conference. Participants in the meeting were 23 seed breeding farms and Jingzhou, Huanggang, Yichang and other prefectural agricultural institutes representing a total of 41 people. Through on-the-spot visits, technical performances, group discussions and typical speeches, the meeting exchanged and summarized the experience of cotton seed breeding and discussed several breeding technical issues. 1. Cotton breeding methods of the original problem: Some people advocate the use of hybrids within the species, some people advocate the use of sub-line breeding method. Through repeated discussions, it is agreed that the current main method should be the use of subfamily breeding (ie, single plant selection, comparative subsystems, mixed breeding). This is because the crossbreed hybrid method takes four years to produce the original species, and the technology is more complicated and the current conditions are not easy to grasp. However, the short breeding cycle of the subfamily breeding method can produce the original species in three years, and the technology is relatively simple and suitable Currently updated needs, but also adapt to the current thoroughbred field technology