Ketahanan Tujuh Varietas Tomat terhadap Nematoda Puru Akar (Meloidogyne spp.)

Abstract

<p>Tomato is an annual plant that has high vitamin content and it was widely used by the general people and industry. At present the productivity is still low. One of the causes is the attack of <em>Meloidogyne. </em>The objective of this research was to test resistance of several tomatoe varieties to root knot nematodes (<em>Meloidogyne</em> spp.). Seven tomato varieties had been tested for resistance to <em>Meloidogyne</em>. Plants that were 45 days after planting in a <em>polybag</em> containing 5 kg of soil were infested with second stage larvae (L2). The parameters observed were plant height, number of knots, final population, fruit weight and canopy wet weight and root wet weight. The results showed that none of the tomatoe varieties tested were resistant to <em>Meloidogyne</em>. But there were differences in responses to the <em>Meloidogyne </em>attack including the Ratna variety and Diamond variety showing the lower number of knot and the final population <em>Meloidogyne</em>.</p>

Screening Resistance of Several Accessions Eggplant (Solanum melongena L.) Against Root-Knot Nematodes (Meloidogyne incognita)

“…The more gall, more severe the attack rate [11]. According to Bakker et al, (2006) [6] that the resistance of a plant depends on the interaction between the host and the pest if M.incognita does not succeed in creating a feeding site for the nutritional needs for its development, the host plant has resistance to M.incognita attack. Resistance after infection is influenced by several factors there are synthesis and accumulation of phytoalexin compounds in response to pest infection, allelopathic compounds produced in plant tissues before infection with nematodes are usually from the phenol group, which is characterized by necrotic symptoms in the epidermis, hypersensitivity reactions that develop near cells where the nematodes take food, then L2 Meloidogyne will fail to form a feeding site and cannot develop or die.…”

“…Plant seeds were planted in prepared pots for three replications in each accession number and control plant. Inoculation was carried out on plants aged 30 days after plant roots adapted to the new environment when transplanting [6]. Inoculation was done by pouring nematode suspension at three points around the preinjured root area.…”