类根瘤由表皮细胞、皮层细胞和分生细胞组成。
The para-nodule was composed of epidermis cells, cortex cells and meristematic cells.
放线菌根瘤植物是自然界中一类重要的固氮资源，作为先锋树种和伴生树种在造林中有重要的应用价值。
Actinorhizal Plants are a kind of important natural nitrogen-fixing resources, and they have high value in reforestation as pioneer and accompanying species.
结瘤因子是由根瘤菌产生的一类信号分子，它们在结瘤的起始阶段发挥着十分重要的作用。
Nod factors are a novel general class of signal molecules produced by rhizobia, which play a key function in the initial steps of nodulation.
结瘤因子是由根瘤菌产生的一类信号分子，它们在结瘤的起始阶段发挥着十分重要的作用。
Nod factors are a novel general class of signal molecules produced by rhizobia, which play a key function in the initial steps of nodulation.
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