Host range of stem and bulb rot parasite nematode (Ditylenchus dipsaci)

The aim of this research was to determine the host status of various species of plants and wild plants against Ditylenchus dipsaci. The research was carried out by conducting a survey and collecting sample at Central Java garlic centers situated in Magelang, Temanggung, Brebes, and Tegal. The host range of this nematode was diagnosed using a root painting method called the Byrd method. Nematodes in the root tissue were observed and calculated using compound microscope at 100x magnification and their images were captured using an optilab. The results showed that Allium sativum, A. cepa, A. porrum, Brassica oleracea var. botrytis, B. oleracea var. italica, B. chinensis var. parachinensis, Lactuca sativa, Zea mays, Capsicum frutescens, Apium graveolens, Cucumis sativus, Solanum tuberosum, Daucus carota are positively the hosts of D. dipsaci. Whereas B.oleracea var. capitata, Ipomea batatas, Colocasia esculenta are not the host of D. dipsaci. D. dipsaci also attacked to weed of Ageratum conyzoides. Grangea maderaspatana, Eleusine indica, Synedrella nodiflora are not the host of D. dipsaci. Lumbu Putih, Sangga Sembalun, and Lumbu Kuning varieties are good hosts for D. dipsaci. Tawangmangu Baru is a variety that is not suited for D.dipsaci. © 2020 Trans Tech Publications Ltd, Switzerland.