求翻译：牡丹的育种方法虽多，但目前主要是杂交育种，关于诱变育种的研究较少，本试验的主要目的是建立叠氮化钠诱变牡丹组培苗的体系是什么意思？

Peony breeding methods, but mainly the cross-breeding, mutation breeding less, the main purpose of this test is to establish sodium azide mutagenesis Peony tissue culture system

Peony breeding, although many, but is now primarily a hybridization, mutagenic breeding on the study for less, the pilot's main purpose is to create a stack of sodium nitride peony group is the miller-system

Although peony's breeding method many, but at present mainly is the crossbreeding, are few about the mutafacient breeding research, this experimental main purpose is establishes the sodium azide mutagenesis peony group to cultivate the seedling the system

Breeding method of Peony, but now is mainly cross-breeding, studies on mutation breeding of less, the main purpose of the tests is to create induced by sodium azide Peony tissue culture system

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