Glycine max cv. Osumi root attachment.

Soybean plants were inoculated with the test strains, one centimetre of the proximal root and of the lateral roots of each plant were collected after 7 days, and the bacteria present were resuspended and plated. Data are the mean ± SD of at least three independent experiments performed in triplicate. Mutant nodD1 and the lactonase strain attachment were individually compared with the parental strain SMH12 attachment by using the Mann-Whitney non-parametric test. Values tagged by * are significantly different at the level α = 5%.Glycine max cv. Osumi root attachment.受试菌株接种至大豆（Glycine max）植株。接种7天后，采集每株植株的近根基部1厘米区段及侧根组织，回收其中的菌体并经重悬后涂布于培养基平板。实验数据以平均值±标准偏差（Standard Deviation，SD）表示，所有实验均至少独立重复3次，且每次重复设置3个平行样本。采用曼-惠特尼非参数检验（Mann-Whitney non-parametric test），分别比较nodD1突变株、内酯酶菌株的根附着能力与亲本菌株SMH12的根附着能力。标注有*的数值在显著性水平α=5%下差异具有统计学意义。本实验为大豆Osumi栽培品种（Glycine max cv. Osumi）的根附着实验。