Chinese leek (Allium tuberosum Rottler ex Sprengel) reduced disease symptom caused by root

Chinese leek（Allium tuberosum Rottler ex Sprengel）reduced disease symptom caused by

root-knot nematode

HUANG Yong-hong1, 2, MAO Zhen-chuan2, XlE Bing-yan2 【期刊名称】农业科学学报（英文版） 【年(卷),期】2016(015)002 【总页数】9

【关键词】Keywords: Meloidogyne spp.，Allium tuberosum Rottler ex Sprengel，root gall index，GC-MS，biocontrol Abstract

Root-knot nematodes（RKNs，Meloidogyne spp.）are obligate biotrophic parasites that settle close to the vascular tissues in plant roots.The diseases resulting from RKN infections cause serious damage to agricultural production worldwide.In the present paper，the resistance of Chinese leek（Allium tuberosum Rottler ex Sprengel）against RKNs，its suppressive effect on nematode disease，its nematicidal activity and its component profle were studied to identify an effcient disease control method.In soil heavily infected by nematodes，Chinese leek showed strong resistance to RKNs.Additionally，the gall indexes of cucumber plants rotated with Chinese leek and of tomato plants intercropped with Chinese leek were reduced by 70.2 and 41.1%，respectively.In a pot experiment，the gall indexes of Chinese leek