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      Ketahanan Beberapa Kultivar Nilam (Pogostemon cablin Benth.) TERHADAP Pratylenchus brachyurus (Godfrey) Filipjev. & Stekhoven

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      Date
      1999
      Author
      Sriwati, Rina
      Sinaga, Meity S.
      Adnan, Abdul Muin
      Mustika, Ika
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      Abstract
      Pratylenchus brachyurus (Godfrey) Filipjev. & Stekhoven is one of the important plant parasitic nematodes that attacked root of patchouli and the causal of root necrosis, growth retardation, reddish or yellowish leaf A greenhouse study was conducted to evaluate the level of resistant of six patchouli cultivars, those were wide planted in Sumatera against P. brachyurus, and to determine the effect of population level of the nematodes on three different resistance patchouli. Six patchouli cultivars were inoculated with 200 nematodeslkg soil. Based on reproduction index the cultivar of Seulimum Putih, Pidie and Sidikalang known as susceptible ones Tapaktuan and Seulimum Merah was moderate resistant and Girilaya was resistant. Furthermore, the effect of population levels ofP. brachyurus (0, 100, 200 and 800 nematodeslkg soil) on three patchouli cultivars showed that 200 nematodeslkg soil population caused significant effect on reduced shoot and weight root and plant height on susceptible cultivars, however. on the moderat resistant and resistant cultivar the significance effect occurred at 800 nematodeslkg soil. The reproduction factors on three patchouli cultivars were decreased with the increased of population nematodes level. The oil and chlorophyll content have been decreased on the infected patchouli cultivars atfille month after inoculation. Key words: Level of resistance, patchouli, population level of the nematode
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      http://repository.ipb.ac.id/handle/123456789/25524
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