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Author: Deori, Mridusmita × End date: 2018 × Start date: 2018 × Type: Thesis × Thesis Type: M.Sc ×
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    ThesisItemOpen Access
    EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGI ON Phytophthora WILT OF PIPPALI (Piper longum)
    (AAU, Jorhat, 2018) Deori, Mridusmita; Dutta, Pranab
    Pippali, Long piper; Family: Piperaceae, is found throughout India especially in the warmer places. It is also found in Malaysia, Singapore, Sri Lanka and Asian regions. Leaf blight caused by Phytophthora spp. has been reported to be one of the major diseases of Pippali causing complete failure of the plant. Arbuscular Mycorrhizal Fungi (AMF) is the mother of plant root endosymbiosis that established symbiotic relationship with plants and plays important role in plant growth, disease protection, and overall soil quality. AMF fungi not only enhanced the growth of medicinal plants but also improved the active principle content. But association of mycorrhizal fungi with medicinal plant like Pippali, Piper longum and their use for management of Phythophthora disease more particularly in North East India is not known. In the present study survey was made in 10 pockets of Pippali growing area of Jorhat district of Assam and found to have root colonization of AMF from 46.50% to 66.50% and soil colonization from 110.55 spores/g to 185.80spores/g of soil. AMF isolated were tentatively characterized as Glomus spp. Mass multiplied spore in Maize (chosen as a symbiotic partner, because of its high mycorrhizal dependency) of AMF were used to study the effect of per cent disease of Phytophthora infection and plant growth parameter of Pippali plants. Significantly lowest PDI (6.41%) of Phytophthora was observed in non sterilized soil with inoculums with Highest growth parameter (shoot and root length, internode no., internode length, leaf area and dry weight of roots and shoots). This was followed by Sterilized soil with inoculums with PDI of 8.74%. Highest PDI (25.66%) with lowest growth parameters was observed in sterilized soil without inoculum followed by non sterilized soil without inoculum with PDI of 21.94%. Five different pathogenic mycoflora viz., Curvularia spp., Alternaria spp., Fusarium spp., Rhizoctonia solani and Sclerotium rolfsii were also found associated with the plant.
  • Thumbnail Image
    ThesisItemOpen Access
    EFFECT OF ARBUSCULAR MYCORRHIZAL FUNGI ON Phytophthora WILT OF PIPPALI (Piper longum)
    (AAU, Jorhat, 2018-07) Deori, Mridusmita; Dutta, Pranab
    Pippali, Long piper; Family: Piperaceae, is found throughout India especially in the warmer places. It is also found in Malaysia, Singapore, Sri Lanka and Asian regions. Leaf blight caused by Phytophthora spp. has been reported to be one of the major diseases of Pippali causing complete failure of the plant. Arbuscular Mycorrhizal Fungi (AMF) is the mother of plant root endosymbiosis that established symbiotic relationship with plants and plays important role in plant growth, disease protection, and overall soil quality. AMF fungi not only enhanced the growth of medicinal plants but also improved the active principle content. But association of mycorrhizal fungi with medicinal plant like Pippali, Piper longum and their use for management of Phythophthora disease more particularly in North East India is not known. In the present study survey was made in 10 pockets of Pippali growing area of Jorhat district of Assam and found to have root colonization of AMF from 46.50% to 66.50% and soil colonization from 110.55 spores/g to 185.80spores/g of soil. AMF isolated were tentatively characterized as Glomus spp. Mass multiplied spore in Maize (chosen as a symbiotic partner, because of its high mycorrhizal dependency) of AMF were used to study the effect of per cent disease of Phytophthora infection and plant growth parameter of Pippali plants. Significantly lowest PDI (6.41%) of Phytophthora was observed in non sterilized soil with inoculums with Highest growth parameter (shoot and root length, internode no., internode length, leaf area and dry weight of roots and shoots). This was followed by Sterilized soil with inoculums with PDI of 8.74%. Highest PDI (25.66%) with lowest growth parameters was observed in sterilized soil without inoculum followed by non sterilized soil without inoculum with PDI of 21.94%. Five different pathogenic mycoflora viz., Curvularia spp., Alternaria spp., Fusarium spp., Rhizoctonia solani and Sclerotium rolfsii were also found associated with the plant.