THE DIVERSITY OF ROOT NODULE ENDOPHYTE OF HIPPOPHAE RHAMNO1DES
沙棘根瘤内生菌的多型性

The root nodules of H. rhamnoides and the upper, middle and lower parts of the nodule, in the four seasons of a.year, were observed under transmission electron microscope. And the findings are that the root nodule endophyte has seven shapes in different parts of the nodule in different seasons: infectious mycelium, reproduceable mycelium, vegetative mycelium, spring sporangium and spring spore, vesicle, winter spore and winter sporangium, and bacteroid-like cell. In the perennial coralloid root nodules, their alternation of generations is infectious mycelium, reproduceable mycelium, vegetative mycelium, spring sporangium and spring spore, and vesicle in spring and summer; and vegetative mycelium, decying vesicles, winter sporangium and winter spore and bacteroid-like cell in autumn and winter. Winter spore and bacteroid-like cell are dormant body.