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      Morfologi Jaringan Daun dan Kandungan Asam Salisilat pada Respon Ketahanan Cabai Terhadap Infeksi Begomovirus

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      ketahanan cabai (946.4Kb)
      Date
      2011-11-22
      Author
      Ganefianti, Dwi Wahyuni
      Sujiprihati, Sriani
      Hidayat, Sri Hendrastuti
      Syukur, Muhamad
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      Abstract
      The amount of loss due to viral infection is very dependent on the onset of infection. The infection probably occurs in a certain phase in plant, which might be related to physical defence and bichemical changes. The objectives of this study are to determine the morphology of leaf tissue in correlation with chili resistance to Begomovirus infection, and to analyze whether the content of salicylic acid will increase in Begomovirus-infected leaves, and whether this condition is related with chili resistance and susceptibility. This study uses the Randomized Complete Block Design with two factors; the first factors are 2 genotypes and the second factor is the infection in 3 plant phases with control group (non infection). The infection transmission method used in this study is individual transmission method by Bemisia tabaci vector, 24 hours acquisition and 48 hours inoculation period using ‘Segunung’ Begomovirus isolate. The result of the study showed that genotype IPBC12 is resistant to Begomovirus infection, has low disease intensity, high trichoma density, and thick epidermis and palisade layers. On the other hand, genotype 35C2 is susceptible, has high disease intensity, low trichoma density, and thin epidermis and palisade layers. However, the salicylic acid content of both genotypes does not significantly different. The cotiledon phase is more susceptible than four-leaves phase and six-leaves phase, trichoma density is lesser, and salicylic acid content is lower than control group, especially in susceptible plant. The disease intensity due to Begomovirus infection is closely and significantly related with trichoma density (r=-0.320*) in which the plant with high disease intensity/susceptible plant has low trichoma density, while resistant plant has high trichoma density.
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      http://repository.ipb.ac.id/handle/123456789/58415
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      • Agronomy and Horticulture [593]

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      Indonesia DSpace Group 
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