Biodiversity and Ecology of some Adenophoreans (Dorylaimida: Longidoroidea) Associated with Apple (Malus domestica Borkh) in Baramulla, Kashmir

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Biodiversity and Ecology of some Adenophoreans (Dorylaimida: Longidoroidea) Associated with Apple (Malus domestica Borkh) in Baramulla, Kashmir

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Title: Biodiversity and Ecology of some Adenophoreans (Dorylaimida: Longidoroidea) Associated with Apple (Malus domestica Borkh) in Baramulla, Kashmir
Author: Lone, Gh. Mohd. (Scholar); M.I.S. Waliullah, (Guide)
Abstract: Studies were carried out at R.R.S. and F.O.A. Wadura during 2008 and 2009 to investigate the status of plant parasitic Adenophoreans on apple locality wise in district Baramulla, to study the horizontal distribution of important adenophoreans around apple trees, their seasonal fluctuation and to record the report of known and new species (if any) and the observations revealed the following important information. Among the various identified plant parasitic Adenophoreans, the most important Adenophoreans were found as Xiphinema insigne, X. index and Longidorus elongatus in all the localities each with 100 per cent frequency. These ranked as 1st, 2nd and 3rd with average population range as 66.67 to 73.52, 43.03 to 50.37 and 37.50 to 44.84/250 cc soil at 95 per cent confidence interval and simultaneously their importance value in the district were found as 46.67, 45.28 and 38.68, respectively and other Adenophoreans were also present but with less frequency. For the management of these important Adenophoreans at various horizontal distances from the base of 25 to 30 year aged trees, the root area between 90 and 135 cm was found most susceptible to these three important recorded Adenophoreans followed by susceptible distances at 180,45 and beyond 180 cm at horizontal level respectively. Vertically the region at the depth of 0 to 30 cm between 90 to 135 cm horizontal distance was found more susceptible than the region vertically between 31 to 45 cm and less population was found beyond 46 cm depth during summer 2008 but during autumn 2008, the population of these three important Adenophoreans in the region between 31 to 45 cm was nearly at par with the population of same found in the region between 0 to 30 cm depth. Similarly enough population of X. insigne, X. index and L. elongatus was found in neglected apple orchards (150.50, 95.00 and 79.75) followed by their populations in undisturbed orchards (135.00, 83.75 and 52.50) and (131.25, 74.25 and 42.25) were found in disturbed orchards, respectively. The population of the three most important Adenophoreans on seasonal basis was found increasing from May (2008) onwards with the rise of temperature above 26.1 oC at R.H. (052-084) till August at 30.4 oC and after that population started diminishing from September at below 27.6 oC at (068-092). The population decreased continuously with the decrease in temperature during 2008 and the same pattern was found during the year 2009. Among the eight species of plant parasitic Adenophoreans, X. insigne, X. ammericanum, X. index and X. baisiri are already known species in Kashmir valley on apple, roses, strawberry and from irrigation water while as X. diversicaudatum, L. elongatus, L. mirus and L. brevicaudatus are new records from apple trees of Kashmir, India. The study concludes with the findings that adenophoreans are cosmopolitan in apple at orchards of Baramulla district of Kashmir valley.
URI: http://dspaces.uok.edu.in/jspui//handle/1/1053
Date: 2011


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