PERPETUATION OF Diplodia pinea CAUSING NEEDLE BLIGHT OF BLUE PINE (Pinus wallichiana) IN KASHMIR VALLEY

SHUBANA BHAT¹, G.H. DAR², YOUSUF SHANAZ³, FARAHANAZ RASOOL⁴, P.A. SHEIKH⁵, WASIM ALI DAR⁶, VIKAS GUPTA⁷*
¹Division of Plant Pathology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, 190025, India
²Division of Plant Pathology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, 190025, India
³Division of Plant Pathology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, 190025, India
⁴Division of Plant Pathology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, 190025, India
⁵Division of Plant Pathology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, 190025, India
⁶Division of Plant Pathology, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, 190025, India
⁷ICAR-Krishi Vigyan Kendra, Leh, Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, 190025, India
* Corresponding Author : vgskuastpathology@gmail.com

Received : 21-06-2018     Accepted : 27-06-2018     Published : 30-06-2018
Volume : 10     Issue : 12       Pages : 6462 - 6464
Int J Agr Sci 10.12 (2018):6462-6464

Keywords : Blue pine, Diplodia pinea, Kashmir, Needle blight, Perpetuation
Conflict of Interest : None declared
Acknowledgements/Funding : Author thankful to Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Srinagar, 190025, India
Author Contribution : All author equally contributed

The needle blights are prevalent in almost all the pine growing regions of the world. Diplodia pinea was frequently isolated pathogen from blightened blue pine needles in Kashmir valley. The perpetuation studies of the pathogen was carried out on intact as well as on fallen diseased pine needles kept at three depths beneath humus. The studies on the production and viability of D. pinea on intact blightened needles as well as on fallen needles, kept at three soil depths (i.e. 0, 5 and 10 cm), revealed the presence of asexual state throughout the storage period. During the whole course of study, teleomorphic state was not observed.

1. Ivory M.H. (1994) Plant Pathology 43, 511-518.
2. Smith H., Wingfield M.J., Crous P.W. and Coutinho T.A. (1996) South African Journal of Botany 62, 86-88.
3. Palmer M.A., McRobert R. E. and Nicholls T.H. (1988) Phytopathology 78, 831-835.
4. Flowers J., Nuckles E., Hartman J. and Vaillancourt L. (2001) Plant Disease 85, 1107-1112.
5. Filajdic N. and Sutton T.B. (1991) Plant Disease 79, [] I. A. and Stanosz G.R. (2009) Plant Disease 93, 81-86.
7. Munck I.A. and Stanosz G.R. (2008) Forest Pathology 38, 196-202.
8. Palmer M. A. and Nicholls T.H. (1985) Plant Disease 69, 739-740.
9. Swart WJ. and Wingfield M.J. (1991) Plant Disease 75, 761-766.
10. Swart W.J., Wingfield M.J. and Knox-Davies (1987) Plant Disease 71, 1038-1040.
11. Palmer M.A. and Nicholls T.H. (1983) How to Identify and Control Diplodia Shoot Blight, Collar Rot and Cankers of Conifers.HT-60 (Ed. Broomall, P. A). USDA, Forest Services, Northern Area State and Private Forestry, Washington, USA.