International Journal of Plant Sciences

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New Record Occurrence of Mycosphaerella Leaf Spot of Eucalyptus in Himachal Pradesh


Affiliations
1 Department of Plant Pathology, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.), India
     

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A study on occurrence and distribution of Mycosphaerella leaf spot of Eucalyptus was conducted at Solan district of Himachal Pradesh during August, 2015 to December, 2015. On the basis of the morphological characteristics, the fungus was identified as Mycosphaerella cryptica and Mycosphaerella marksii which produced symptoms like necrotic spots and patches on leaves and presence of crinkled and distorted foliage. Ascopores of M. cryptica and M. marksii are hyaline, with one septum, fusiform to tunecate and whose size varies from 12-16 x 2-4 μm and 11-14 x 2-3 μm, respectively.

Keywords

Mycosphaerella spp., Eucalyptus, Conidia.
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  • Balmelli, G., Simeto, S., Altier, N., Marroni, V. and Diez, J.J. (2012). Long term losses caused by foliar diseases on growth and survival of Eucalyptus globulus in Uruguay. New Forests, 44(2) : 249-263.

  • Barber, P.A. (2004). Forest pathology: the threat of disease to plantation forests in Indonesia. Plant Pathol. J., 3: 97-104.

  • Bisht, S., Kumar, P., Raghavan, S. and Purohit, J. (2013). In vitro management of Curvularia leaf spot of maize using botanicals, essential oils and bio-control agents. Bioscan, 8(3) : 731-733.

  • Carnegie, A.J. and Keane, P.J. (1994). Further Mycosphaerella species associated with leaf diseases of Eucalyptus. Mycolog. Res., 98 : 413-418.

  • Carnegie, A.J., Keane, P.J. and Podger, F.D. (1997). The impact of three species of Mycosphaerella newly recorded on Eucalyptus in Western Australia. Australasian Plant Pathol., 26 : 71-77.

  • Crous, P.W., Ferreira, F.A., Alfenas, A.C. and Wingfield, M.J. (1993). Mycosphaerell asuberosa associated with corky leaf spots on Eucalyptus in Brazil. Mycologia, 85 : 705-710.

  • Crous, P.W. and Wingfield, M.J. (1996). Species of Mycosphaerella and their anamorphsa ssociated with leaf blotch disease of Eucalyptus in South Africa. Mycologia, 88 : 441-458.

  • Dick, M.A. and Dobbie, K. (2001). Mycosphaerell asuberosa and M. intermedia on Eucalyptus in New Zealand. New Zealand J. Bot., 39 : 269-276.

  • Dick, M.A. and Gadgil, P.D. (1983). Eucalyptus leaf spots. Forest Pathology in New Zealand, 1: 7.

  • Old, K.M., Wingfield, M.J. and Yuan, Z.Q. (2003). A manualof diseases of Eucalypts in South-East Asia. Center for International Forestry Research, Bogor.

  • Park, R.F. (1988). Effect of certain host, inoculum and environmental factors on infection of Eucalyptus species by two Mycosphaerella species. Trans. British Mycolog. Soc., 90 : 221-228.

  • Park, R.F. and Keane, P.J. (1982). Leaf diseases of Eucalyptus associated with Mycosphaerella species. Trans. British Mycolog. Soc., 79 : 101-115.

  • Park, R.F. and Keane, P.J. (1987). Spore production by Mycosphaerella species causing leafdiseases of Eucalyptus. Trans. British Mycolog. Soc., 89 : 461-470.

  • Park, R.F., Keane, P.J., Wingfield, M.J. and Crous, P.W. (2000). Fungal diseases of eucalyptfoliage. In: Keane, P.J., Kile, G.A., Podger, F.D. and Brown B.N. (eds).Diseases and pathogens of eucalypts, 153-239. CSIRO, Collingwood, Victoria.

  • Thakar, B.K. and Mishra, P.C. (2010). Dust collection potential and air pollution tolerance index of tree vegetation around Vedanta aluminium limited, Jharsuguda. Bioscan, 3 : 603-612.

  • Vaid, S., Batish, D.R., Singh, H.P. and Kohli, R.K. (2010). Phytotoxic effect of eugenol towards two weedy species. Bioscan, 5(3) : 339-341.


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  • New Record Occurrence of Mycosphaerella Leaf Spot of Eucalyptus in Himachal Pradesh

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Authors

Sunita Chandel
Department of Plant Pathology, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.), India
Vijay Kumar
Department of Plant Pathology, Dr. Y.S. Parmar University of Horticulture and Forestry, Nauni, Solan (H.P.), India

Abstract


A study on occurrence and distribution of Mycosphaerella leaf spot of Eucalyptus was conducted at Solan district of Himachal Pradesh during August, 2015 to December, 2015. On the basis of the morphological characteristics, the fungus was identified as Mycosphaerella cryptica and Mycosphaerella marksii which produced symptoms like necrotic spots and patches on leaves and presence of crinkled and distorted foliage. Ascopores of M. cryptica and M. marksii are hyaline, with one septum, fusiform to tunecate and whose size varies from 12-16 x 2-4 μm and 11-14 x 2-3 μm, respectively.

Keywords


Mycosphaerella spp., Eucalyptus, Conidia.

References