湖南稻区拟禾本科根结线虫寄主范围调查

Investigation of host range of Meloidogyne graminicola in Hunan rice region

2020—2021年,采用田间调查及温室盆栽27种作物接种拟禾本科根结线虫2龄幼虫的方法,确定湖南稻区拟禾本科根结线虫的寄主范围。结果表明:湖南稻区拟禾本科根结线虫可侵染15科29种植物,其中杂草15种、蔬菜12种、粮食作物2种;玉米、甘薯、花生、辣椒、番茄、南瓜、冬瓜、菜瓜、丝瓜、西葫芦、黄秋葵、刀豆等为非寄主作物,大豆、小麦、菜豆、胡萝卜、小葱、大蒜、青菜等为弱寄主。

The host range of rice root-knot nematodes(Meloidogyne graminicola) in Hunan rice region were systematically identified by field investigation and inoculating 27 kinds of crops with second stage juveniles(J2) of nematode in greenhouse conditions from 2020 to 2021. The results showed that these nematodes can infect 29 species of plants from 15 families,including 15 weeds, 12 vegetable crops and 2 grain crops. Zea mays, Dioscorea esculenta, Arachis hypogaea, Capsicum annuum, Lycopersicon esculentum, Cucurbita moschata, Benincasa hispida, Cucumis melo L. var. Flexuosus Naud., Luffa cylindrica, Cucurbita pepo, Abelmoschus esculentus and Canavalia gladiata were non-host, while Glycine max, Triticum aestivum, Phaseolus vulgaris, Daucus carota, Allium fistulosum, Allium sativum and Brassica rapa var. chinensis were poor hosts. Non-host and poor host crops could be applied in crop rotation measures.