野生稻抗性对褐稻虱卵巢和交配率的影响

THE INFLUENCE OF THE RESISTANCE OF WILD RICE ON OVARIAL DEVELOPMENT AND COPULATION OF THE BROWN PLANTHOPPER

The ovary of the brown planthopper (BPH) adults feeding on re-sistant wild rice 0.punctata (IRRI Ace.100945) developed slowerand with shorter ovarioles and lower number of full grown eggs thanthose on susceptible and moderately resistant wild rice such as O.per-rennis (IRRI Acc.100844) and O.rufipogon (IRRI Acc.100910).There was no significant ovary developmental difference between theadults feeding on susceptible and moderately resistant wild rice. The results mentioned above,caused much lower copulation rateof adults feeding on resistant wild rice than those on susceptible andmoderately resistant ones.The close and positive correlation betweencopulation rate and ovarial development of female was found.