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本文报道利用有强烈穿透力的物理因子(快中子、Co~(60)-γ射线等)处理刚长气生菌丝的单菌落琼脂柱,大大提高正变机率。并以微生物刺激圈的大小作为刺激素筛选指标,加快了育种速度.实践证明,这个方法具有简便、易产生变异、利用率高等优点,是一种快捷有效的新育种技术。本文以育成5406(Streptomyces jingyangensis N.sp)高效新菌株为例,重点介绍这种快速育种方法的研究和应用。 相似文献
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In this paper we use a new inducing method by applying the powerful and penetra-tire fast neutron and Co~(60)-γ rays on single colonies of just developed aerial hyphae from whichwe have obtained a high percentage of mutant strains. At the same time, the stimulativezone is used as the hormone screening index so that the breeding rate has been greatly acceler-ated. It has been proved in our research that this new method has many merits. It is easy toapply and to obtain a high ratio of mutants. Hence it is really a fast and effective in-ducing technique. The successful breeding of Streptomyces jingyangensis sp. nov., a highlyeffective stra.in "5406", provides us with its studies and utilization. 相似文献
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