中文摘要：

为了明确香蕉枯萎病菌对香蕉苗期生长的影响，模拟3种病菌侵染途径（带菌土壤、带菌香蕉苗、带菌土壤与带菌香蕉苗），及中低高3种带菌浓度（10、103、106CFU／mL）监测香蕉枯萎病菌4号生理小种（FOC4）对香蕉苗期茎围、株高、叶片长宽等生长指标的影响，并进行统计分析。结果表明，在接种后第64d，所有处理香蕉苗的茎围、株高、叶片长宽增长均与空白对照差异显著；在一定范围内，接菌浓度越大，香蕉苗的茎围、株高、叶片长宽生长就越慢，甚至停止生长；接菌浓度低至10CFU，mL（带菌香蕉苗）依然能使蕉苗发生香蕉枯萎病；90％香蕉苗被香蕉枯萎病菌侵染后叶片出现畸形。

英文摘要：

In order to understand effects of banana Fusarium wilt on banana seedling growth, 3 kinds of pathogen infection ways （germcarrying soiL germ-carrying seedling, germ-carrying and germ-carrying seedling） and 3 kinds of bacteria concentration （10, 103, 106 CFU/mL） were designed to study effects of Fusarium oxysporumf., sp. cubense 4 （FOC4） on stalk width, plant height, leaves length and width at banana seedling period. Data was analyzed statistically. The results showed that after 64 days, stalk width, plant height, leaves length and width of banana seedling in experimental groups were significantly different from those in control group. Within certain concentration, the growth of stalk width, plant height, leaves length and width of banana seedling slowed down even stopped with the density of FOC4 increasing. Inoculation of 10 CFU/mL FOC4 could cause banana Fusarium wilt. 90% of banana seedlings＇ leaves appeared deformity when infectted by FOC4.