Life cycle and pathogenicity of Aphelenchoides swarupi Seth & Sharma on Agaricus bisporus (Lange) Singer
KrishiKosh
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Title |
Life cycle and pathogenicity of Aphelenchoides swarupi Seth & Sharma on Agaricus bisporus (Lange) Singer
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Creator |
Madhuri
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Contributor |
Kanwar, R.S.
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Subject |
Nitrogen, Planting, Grain, Yields, Wheats, Inorganic acid salts, Drying, Dry matter, Developmental stages, Fertilizers
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Description |
Investigations were carried out on life cycle and pathogenicity of Aphelenchoides swarupi on U3 strain of Agaricus bisporus and relative susceptibility of its different strains to this nematode. The nematode took 5-6 days for completion of life cycle from J 2 to adult at 30 ºC which was prolonged to 13-14 days at 15 ºC. A total of 10 strains of A. bisporus viz., ABL2, ABL3, ABL4, ABL5, ABL6, B10, B13, DMR3, DMR7 and U3, and two strains (A1 and A6) of Pleurotus eous were evaluated against A. swarupi. Nematode multiplied on all the strains of A. bisporus and caused mycelial damage to them. Of these, ABL2 and DMR7 were found to be resistant and tolerant, respectively while remaining were susceptible. On these strains, nematode population and reproduction factor were higher after 30 days than after 15 days of nematode inoculation. Both the strains of P.eous were found immune to this nematode. In pathogenicity experiment, 10 nematodes per plate as well as per kg compost in bags were found pathogenic. In plates, reproduction factor and population growth rate were minimum at one and these decreased further when inoculum level increased from 10 to 40. In bags, spawn run was poor at 1000 nematodes per kg compost but moderate at 10 and 100 nematodes per kg compost in comparison to good in control. Yield and final nematode population were affected by inoculum levels and time of inoculation. Yield reduction was more in all inoculum levels when inoculation was done at spawning as compared to casing. Final nematode population was higher when inoculation was done at time of spawning as compared to time of casing. Reproduction factor decreased with increase in inoculum level and higher population growth rate was achieved when nematode inoculation was done at casing as compared to when it was done at spawning. |
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Date |
2016-10-07T09:21:58Z
2016-10-07T09:21:58Z 2015 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/80201
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Language |
en
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Format |
application/pdf
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Publisher |
CCSHAU
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