1·The occurrence of hemoglobin in root nodules is notable.
值得注意的是根瘤中出现血红蛋白。
2·The number of roots, number of root nodules, living plant weight also decreased.
使大豆根数，根瘤数、植株鲜重降低。
3·Nitrogen fixed by legume root nodules accounts for 40% of total biological nitrogen fixation.
豆科植物的根瘤固氮占生物固氮总量的40%。
4·The infected cells in young Vicia sativa root nodules possess a small amount of cytoplasm, their central parts are some larger vacuoles.
电镜观察结果表明，幼龄箭舌豌豆根瘤侵染细胞的细胞质较少，中央是一些体积较大的液泡。
5·The nuclear ultrastructural changes of infected cell were studied by using transmission electron microscopy (during) the development of pea root nodules.
用透射电镜研究了豌豆根瘤发育中侵染细胞核的超微结构变化。
6·Symbiotic nitrogen-fixing bacteria invade the root hairs of host plants, where they multiply and stimulate the formation of root nodules, enlargements of plant cells and bacteria in close association.
共生的固氮菌侵袭宿主植物的根毛，并在此繁殖和促进根瘤的形成、植物细胞和亲密共生细菌的扩大。
7·The strains isolated from nodules of the recombinant grown on soybean root main-tain the same high tolerance to salt, antibiotics and toxin.
该重组体在大豆根上能结瘤，并且从根瘤中分离出的后代品系对盐、抗生素和毒素仍保持同样高的抗性。
8·The glasshouse experiment results showed that the pectin-lytic bacterium helped rhizobia to enter the root and formed nodules on them (31.25%) .
试验表明，根瘤菌侵入油菜根细胞，且形成含根瘤茵的根瘤，结瘤率为31.25％。