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首页> 外文期刊>Nematropica >Host-Parasite Relationship of Pratylenchus vulnus on Apple and Pear Rootstocks
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Host-Parasite Relationship of Pratylenchus vulnus on Apple and Pear Rootstocks

机译：苹果和梨砧木上小菜蛾的寄主-寄生关系

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The effects of P vulnus on the apple rootstock EMLA 26 and the pear rootstock OHF-333 were evaluated in vitro and under greenhouse conditions. In vitro, P vulnus caused extensive damage to both rootstocks in the absence of microorganisms. Earliest penetration was recorded at 2 days for both hosts. Nematodes appeared to converge to one or two points of entry. During the course of 28 days, cortical parenchyma became extensively colonized and developed lesions and cavities. Pratylenchus vulnus was randomly oriented within the cortex and did not invade meristems or conductive tissues. Visible lesions appeared at 7 days and expanded rapidly. In greenhouse experiments, shoot length, and fresh top and root weights in 5-month-old apple and pear were significantly lower in P. vulnus treatments than in uninoculated controls. Plant growth of pear did not differ between treatments receiving 50 and 500 nematodes/plant. The EMLA 26 rootstock was more susceptible to P. vulnus than the OHF-333 pear
机译：在室内和温室条件下评估了太子参对苹果砧木EMLA 26和梨砧木OHF-333的影响。在体外，在没有微生物的情况下，P创伤对两种砧木都造成了广泛的损害。两位主机在第2天记录的最早渗透。线虫似乎收敛到一两个入口点。在28天的过程中，皮质实质被广泛定植并形成了病变和空洞。 Pratylenchus vulnus在皮层内随机定向，不侵入分生组织或导电组织。在第7天出现可见的病灶并迅速扩大。在温室实验中，与未接种的对照相比，在5个月大的苹果和梨中，五倍子假单胞菌的芽长，新鲜的根重和根重显着降低。接受50和500根线虫/植物的处理之间，梨的植物生长没有差异。 EMLA 26砧木比OHF-333梨更容易受到外阴假单胞菌的伤害

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