本文报道柑桔的福建根结线虫Meloidogyne fujianensis新种。新种的特征是雌虫阴门右缘外侧有一中央凹陷的小圆隆，口针较短，排泄孔开口距头顶较远，雌虫、雄虫和第二期幼虫背食道腺孔至口针基球底部的距离较长。第二期幼虫a值较小，直肠不膨大，半月体与排泄孔处于同一水平上。这些特征与近似种南方根结线虫M.incognita和花生根结线虫M.atenuria可相区别。

南靖柑桔的福建根结线虫（Meloidogyne fujianensis）经扫描电镜观察显示它跟四种常见的根结线虫有明显区别，最明显的区别在于其雌虫的头部结构——唇盘呈“X”状，唇盘和中唇之间有沟隔开。此外，雄虫头区无环纹、幼虫唇盘和中唇呈短哑铃状，也有别于其近似种南方根结线虫和花生根结线虫，而其幼虫头区平滑或偶具一条短环纹也有别于前者。

The present communication reports the infection of Hirschm anniella o-ryz aewith Bacillus penetrans in Yuan Kou Village of Nan Ping city in Fujian province, which was first found in China. The infect ivityw as 5.26%. In addition, the cuticles of 40% of H. oryzae were adhered to the endospores of B. penetrans. After the infection, the pseudo-coelom of H. oryzae was filled with many spores, so that nematodes were clumsy in move-ment, body's colour was especially white, and ophagus became indistinct. When the nem a-tode bodies were cut, many spores flowed out of the wound, and the genital glands in the pseudocoelom shrivelled. The spores were (n=36) 4.1±0.1 (3.6～4.3) Lmin diameter with an in ternal, dense, spherical structure at apex which was (n=32) 2.0±0.1 (1.6～2.1) Lm in diam eter. Their morphology was similar to the spores from the females of Meloidogyne spp: This discovery indicated that B. penetrans currently appeared to have great potential for biological control of Hirschm anniella spp. of rice.

在番茄、辣椒和鸡冠花中进行的盆栽试验表明：穿剌芽孢杆菌对感染根结线虫的植物都有保护效果，大约可使虫口密度降低75%～80%；同时该菌使根结线虫致根变重的情况有所缓和，从而根冠比倒转的症状有很大改善，各组试验的解剖结果证明，穿剌芽孢杆菌的寄生都导致虫瘿、卵块、雌虫、雄虫以及各期幼虫明显减少。

在厦大校园和鸿山公园检查了15株吊灯花的根结线虫受穿刺芽孢杆菌感染的情况，株感染率为100%，用漂浮法共检查根周土壤的322只幼虫，感染率为58.4%，感染强度为8.9（1～200）个孢子/幼虫；用孵化法共检查从卵块孵出的390只幼虫，感染率为42.6%，感染强度为4.8（1～100）个孢子/幼虫。虽然两种方法都有效，但前者优于后者。迄今为止，吊灯花是自然界中穿刺芽孢杆菌感染最严重的一种寄主，其大面积自然感染表明吊灯花可作为制造穿刺杆菌菌剂原料的优良树种，有希望投入应用，进行大量生产。