Phytonematodes infesting pineapple plants in Indonesia and its relations with pineapple mealybug wilt disease
2007
Supramana | Siregar, B.A. | Sulu, T.D. | Suastika, G., Bogor Agricultural Univ., Bogor (Indonesia). Dept. of Plant Protection
Phytonematodes extracted from root and soil samples collected from different growth stages of pineapple plants showing and not showing symptom of pineapple mealybug wilt disease(MWD)in Indonesia were evaluated. By using identification key: Plant Parasitic Nematodes-A Pictorial Key to Genera (May et al. 1996), the phytonematodes found colonized the pineapple roots and the soil around the root were Criconemoides, Dithylencus, Helicotylenchus, Haplolaimus, Meloidogyne, Pratylenchus, and Rotylenchulus. In line with its intrisic characteristic, Pratylenchus was likely a genus dominating the population among phytonematodes live in the pineapple root, whereas Rotylenchulus dominated the population in the soil. The numbers of Pratylenchus and Rotylenchulus in the roots and soil, respectively, collected from the MWD symptomatic pineapple plants were not significantly different from those of the MWD asymptamatic healthy plants. Apparently, the infestation of Pratylenchus and or Rotylenchulus in pineapple roots and soil is not related to the symptom induction of MWD.
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