石榴园病原根结线虫诱集植物的筛选

Screening of Trap Plants of Pathogenic Root-knot Nematode in Pomegranate Orchard

为筛选石榴园内对病原根结线虫诱集能力较好的诱集植物,在感病石榴园内分别比较了分区和混合种植的不同寄主植物(番茄、黄瓜、茄子、菠菜和辣椒)对病原根结线虫的诱集效果。结果显示,分区种植和混合种植寄主植物对根结线虫的诱集效果一致,不同寄主植物之间诱集能力存在显著差异。无论分区种植还是混合种植,黄瓜和番茄的根结百分率均较高,分区种植时黄瓜、番茄的根结百分率分别为35.2%、14.5%,混合种植时黄瓜、番茄的根结百分率分别为40.0%、15.3%,其中黄瓜的根结百分率显著高于其他4种植物;番茄和黄瓜根际土壤中的二龄幼虫数显著高于茄子、菠菜和辣椒,根中的雌成虫数和卵块数也均显著高于其他3种植物。说明在石榴园内种植的番茄和黄瓜对石榴病原根结线虫的诱集能力显著强于茄子、菠菜和辣椒。

To screen trap plants with better capacity for trapping the pathogenic root-knot nema- tode in pomegranate orchard, the trap effects of tomato, cucumber, eggplant, spinach and pepper both in zonal and mixed planting patterns were compared in diseased pomegranate orchard, respectively. The results demonstrated that the trap effects to root-knot nematode of host plants in zonal and mixed planting patterns were consistent, but the attractive capability of different plants was significantly different from each other. The root-knot percentage of cucumber was 35.2 % in zonal planting pattern and 40. 0K in mixed planting pattern, both significantly higher than the other four plants in the same planting patterns. The number of second-stage juveniles in soil around root of tomato and cucumber was significantly more than the other three plants, and the number of both female adults and egg masses in root of cucumber and tomato was also more than the other three plants. The trap effects of cucumber and tomato to pomegranate root-knot nematode were significantly better than eggplant, spinach and pepper in pomegranate orchard.