本文采用自然选育的方法将实验室保藏的菌种进行复壮纯化处理，得到一株生产水平稳定的菌种，该菌种的产抗水平较原始出发菌种提高了18。
The strain strored in our lab was rejuvenated and purificated by natural screening, the production of the antibiotic was stable and increased by 18.
对非自然环境中青霉菌菌株的培养选育进行了实验研究。
This paper presents conclusions of the breeding of penicillium sp in the non natural environment.
油占8号是广西农科院水稻所从“澳粳占”自然变异植株中选育而成的优质常规稻新品种。
Youzhan 8, selected from a natural mutation of variety Aojinzhan by Rice Research Institute of GXAAS, is a fine grain quality inbred variety of indica type.
GS豫豆8号是用系谱法从郑74046品系与尖叶桥梁亲本自然杂交株的杂种后代中选育成的窄叶型大豆新品种。
GS Yudou 8 is a narrow-leafed soybean variety derived from the natural hybrid of Zheng 74046 line and a tip soybean parent material (paternal) with a pedigree selection method.
春兰是从福建省农科院茶叶研究所茶树品种资源圃铁观音的自然杂交后代中，经系统选育而成的一个优质早生乌龙茶新品种。
Chunlan, selected from progenies of natural hybrid of Tie Guanyinkept in the germplasm garden of Tea Research Institute, was a newly bred Oolong tea cultivar with early-growth and high-quality.
春兰是从福建省农科院茶叶研究所茶树品种资源圃铁观音的自然杂交后代中，经系统选育而成的一个优质早生乌龙茶新品种。
Chunlan, selected from progenies of natural hybrid of Tie Guanyinkept in the germplasm garden of Tea Research Institute, was a newly bred Oolong tea cultivar with early-growth and high-quality.
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