菌株改良 meaning in English

strainimprovement

In the artificial - planting , the strain of cordyceps militaris is easy to degenerate . at present , the study about the fungus in cordyceps genus are just in the identification of fungi 、 the nutrition analysis 、 the using in medicine and artificial - planting . although , it could reduce the lost by the usual breeding way , we could not solve the problem at basic . about the degeneration of strain , people mostly use the gender - cycling 、 the fusing - cytoplasmic technology and the genetic - engineering method to reform the strain . most of people use moleculor method in the study of relationships among the species and between the species
用常规选育方法虽然能减少一定的损失，但不能从根本上解决菌种退化这一长期困扰企业生产的问题。针对菌种退化问题，主要是利用有性循环、原生质体融合和遗传工程等途径进行菌株改良，应用分子生物学手段只是研究种内、种间的系统关系等，而关于菌种退化遗传机理的研究尚未见报道。菌种退化是菌类栽培过程中普遍存在的，也是生产当中迫切希望得到解决的问题。