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为了延长水稻良种的使用年限,充分发挥良种的增产作用,避免品种的频繁更替,必须进行提纯复壮,改进提高原种生产和利用技术.1979年以来,我们在这方面进行了试验研究,现将结果报告如下.单株选择的数量标准正确的单株选择是原种生产的基础.对田间初选的单株,室内决选一般都要考种,考种项目多达十几项.为了保持品种遗传组成的稳定性并增加原种产量,初选单株一般都在千个以上,考种工作量很大.如此严格繁琐的考种项目对于提高原种质量是否有效,能不能简化,这是原种生产技术需要研究的一个重要问题.
In order to extend the useful life of rice varieties, give full play to the yield-raising role of elite species, to avoid the frequent replacement of varieties, must be purified and rejuvenated, improve production and utilization of original species of technology .1979, we conducted a pilot study in this regard, The results are reported as follows: The number of single plant selection The correct selection of single plant production is the basis for the production of the first selection of plants in the field, indoor selection generally have to test species, test items as many as a dozen items in order to maintain The stability of the genetic composition of varieties and increase the production of primary species, primaries are generally more than a thousand, test a lot of work load.Such cumbersome test items for improving the quality of the original species is effective, can not be simplified, which It is an important issue that need to be studied on the production technology of original seed.