Studies on nematodes in coffee soils of South India, 7: Histopathology and host-parasitic relationships of Pratylenchus coffeae, and two species of coffee
Histopathological studies were conducted on two species of coffee, Coffea arabica Linnaeus (susceptible to nematode) and C. canephora Pierre ex Froehner (tolerant) infested by the nematode. Pratylenchus coffeae (Zimmermann) Filipjev & Steckoven under sterile conditions. The nematode entered the host tissue at piliferous region in arabica while it did not confine to any particular region in robusta. Percentage of nematodes entering roots was much less in robusta than arabica. Entry of nematodes into the host tissue, development of lesiones and egg laying were also delayed in robusta. Formation of pericycle tumour which caused distortion of tissue in arabica was noticed in robusta. The lesions in robusta were smaller than those in arabica. The tolerance of robusta against nematode is inherent and these factors contribute to it
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| Format: | biblioteca |
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| Subjects: | COFFEA ARABICA, COFFEA CANEPHORA, NEMATODOS DE LAS PLANTAS, PRATYLENCHUS COFFEAE, HISTOLOGIA, PATOLOGIA, PARASITISMO, HOSPEDEROS, INDIA, |
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| Summary: | Histopathological studies were conducted on two species of coffee, Coffea arabica Linnaeus (susceptible to nematode) and C. canephora Pierre ex Froehner (tolerant) infested by the nematode. Pratylenchus coffeae (Zimmermann) Filipjev & Steckoven under sterile conditions. The nematode entered the host tissue at piliferous region in arabica while it did not confine to any particular region in robusta. Percentage of nematodes entering roots was much less in robusta than arabica. Entry of nematodes into the host tissue, development of lesiones and egg laying were also delayed in robusta. Formation of pericycle tumour which caused distortion of tissue in arabica was noticed in robusta. The lesions in robusta were smaller than those in arabica. The tolerance of robusta against nematode is inherent and these factors contribute to it |
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