【摘要】 <正> 非豆科植物的共生固氮作用大多数是由弗兰克氏菌的侵染形成根瘤引起。其中泡囊是弗氏菌在根瘤内的固氮场所(Akkermans等1977,Tjepkema等1981)。我们采用光学及电子显微镜对泡囊进行了观察,并对根瘤不同部位的泡囊数量及其固氮活性与其它生理活性的关系进行了研究。更多还原

【Abstract】 The vesicles of Frankia in nodules of Alnus Mill and Elaeagnus Linn exist mainly in front part of the nodule, the nitrogenase activity of front part is higher than latter part of nodule. Nitrogenase activity of vesicles increase with photosynthetic intensity. The vesicles of endophyte pure culture are smaller than that in nodules. The nitrogenase activity of various strains are different.更多还原