Basal lignified star-shaped cavity in oil palm (Elaeis guineensis Jacq.): early development in nursery and consequences for BSR control
The existence of a high lignified star-shaped cavity at the base of the bole, or more precisely at the root - bole interface, has been clearly identified for the first time. This cavity appears to be a perfect culture chamber for Ganoderma development. Random observations of the initial stage of Basal Stem Rot infection in young palms showed the development of infectious stroma-like structures inside the cavity prior to colonisation of the bole. The existence of a lignified scar in 8-month-old seedlings was revealed by initial observation. The scar then developed further inside the star-shaped cavity (Breton et al, 2009a; Breton et al, 2009b). Specific observation during early growth stages in the nursery revealed the appearance of a very tiny scar after 5 months on a few seedlings. The number of affected seedlings increased rapidly to reach nearly 100% after 9 months. The scar grew quickly in all directions and the resulting cavity could reach 50% of bole diameter, 13 mm wide and 8 mm deep at this stage. The star-shaped cavities have 2 to 5 branches. After 6 to 7 months in the nursery, once the star-shaped cavity was extended enough, the development of mycelium (not identified) and / or presence of tiny arthropods such as aphids, Chilopodae larva and small ants ware frequently observed. These results demonstrate the role of this star-shaped cavity as a perfect culture chamber for fungus and a possible refuge for pests, predators or disease vectors at very early stages of oil palm development. This star-shaped cavity definitely appears to be an interesting target for preventive action against Basal Stem Rot, i.e. Biocontrol by antagonistic, long-lasting fungicide, etc.
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dig-cirad-fr-5549022022-03-30T12:56:53Z http://agritrop.cirad.fr/554902/ http://agritrop.cirad.fr/554902/ Basal lignified star-shaped cavity in oil palm (Elaeis guineensis Jacq.): early development in nursery and consequences for BSR control. Jacquemard Jean-Charles, Suryana Edyana, Breton Frédéric, Lubis Zulkifli, De Franqueville Hubert. 2010. In : International Oil Palm Conference (IOPC 2010) : transforming oil palm industry, Yogyakarta, Indonésie, 1-3 June 2010. IOPRI. s.l. : s.n., 1-20. International Oil Palm Conference, Yogyakarta, Indonésie, 1 Juin 2010/3 Juin 2010. Researchers Basal lignified star-shaped cavity in oil palm (Elaeis guineensis Jacq.): early development in nursery and consequences for BSR control Jacquemard, Jean-Charles Suryana, Edyana Breton, Frédéric Lubis, Zulkifli De Franqueville, Hubert eng 2010 s.n. International Oil Palm Conference (IOPC 2010) : transforming oil palm industry, Yogyakarta, Indonésie, 1-3 June 2010 H20 - Maladies des plantes F50 - Anatomie et morphologie des plantes Elaeis guineensis http://aims.fao.org/aos/agrovoc/c_2509 Sumatra http://aims.fao.org/aos/agrovoc/c_7518 The existence of a high lignified star-shaped cavity at the base of the bole, or more precisely at the root - bole interface, has been clearly identified for the first time. This cavity appears to be a perfect culture chamber for Ganoderma development. Random observations of the initial stage of Basal Stem Rot infection in young palms showed the development of infectious stroma-like structures inside the cavity prior to colonisation of the bole. The existence of a lignified scar in 8-month-old seedlings was revealed by initial observation. The scar then developed further inside the star-shaped cavity (Breton et al, 2009a; Breton et al, 2009b). Specific observation during early growth stages in the nursery revealed the appearance of a very tiny scar after 5 months on a few seedlings. The number of affected seedlings increased rapidly to reach nearly 100% after 9 months. The scar grew quickly in all directions and the resulting cavity could reach 50% of bole diameter, 13 mm wide and 8 mm deep at this stage. The star-shaped cavities have 2 to 5 branches. After 6 to 7 months in the nursery, once the star-shaped cavity was extended enough, the development of mycelium (not identified) and / or presence of tiny arthropods such as aphids, Chilopodae larva and small ants ware frequently observed. These results demonstrate the role of this star-shaped cavity as a perfect culture chamber for fungus and a possible refuge for pests, predators or disease vectors at very early stages of oil palm development. This star-shaped cavity definitely appears to be an interesting target for preventive action against Basal Stem Rot, i.e. Biocontrol by antagonistic, long-lasting fungicide, etc. conference_item info:eu-repo/semantics/conferenceObject Conference info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/554902/1/document_554902.pdf application/pdf Cirad license info:eu-repo/semantics/openAccess https://agritrop.cirad.fr/mention_legale.html http://catalogue-bibliotheques.cirad.fr/cgi-bin/koha/opac-detail.pl?biblionumber=62061 |
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H20 - Maladies des plantes F50 - Anatomie et morphologie des plantes Elaeis guineensis http://aims.fao.org/aos/agrovoc/c_2509 http://aims.fao.org/aos/agrovoc/c_7518 H20 - Maladies des plantes F50 - Anatomie et morphologie des plantes Elaeis guineensis http://aims.fao.org/aos/agrovoc/c_2509 http://aims.fao.org/aos/agrovoc/c_7518 |
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H20 - Maladies des plantes F50 - Anatomie et morphologie des plantes Elaeis guineensis http://aims.fao.org/aos/agrovoc/c_2509 http://aims.fao.org/aos/agrovoc/c_7518 H20 - Maladies des plantes F50 - Anatomie et morphologie des plantes Elaeis guineensis http://aims.fao.org/aos/agrovoc/c_2509 http://aims.fao.org/aos/agrovoc/c_7518 Jacquemard, Jean-Charles Suryana, Edyana Breton, Frédéric Lubis, Zulkifli De Franqueville, Hubert Basal lignified star-shaped cavity in oil palm (Elaeis guineensis Jacq.): early development in nursery and consequences for BSR control |
description |
The existence of a high lignified star-shaped cavity at the base of the bole, or more precisely at the root - bole interface, has been clearly identified for the first time. This cavity appears to be a perfect culture chamber for Ganoderma development. Random observations of the initial stage of Basal Stem Rot infection in young palms showed the development of infectious stroma-like structures inside the cavity prior to colonisation of the bole. The existence of a lignified scar in 8-month-old seedlings was revealed by initial observation. The scar then developed further inside the star-shaped cavity (Breton et al, 2009a; Breton et al, 2009b). Specific observation during early growth stages in the nursery revealed the appearance of a very tiny scar after 5 months on a few seedlings. The number of affected seedlings increased rapidly to reach nearly 100% after 9 months. The scar grew quickly in all directions and the resulting cavity could reach 50% of bole diameter, 13 mm wide and 8 mm deep at this stage. The star-shaped cavities have 2 to 5 branches. After 6 to 7 months in the nursery, once the star-shaped cavity was extended enough, the development of mycelium (not identified) and / or presence of tiny arthropods such as aphids, Chilopodae larva and small ants ware frequently observed. These results demonstrate the role of this star-shaped cavity as a perfect culture chamber for fungus and a possible refuge for pests, predators or disease vectors at very early stages of oil palm development. This star-shaped cavity definitely appears to be an interesting target for preventive action against Basal Stem Rot, i.e. Biocontrol by antagonistic, long-lasting fungicide, etc. |
format |
conference_item |
topic_facet |
H20 - Maladies des plantes F50 - Anatomie et morphologie des plantes Elaeis guineensis http://aims.fao.org/aos/agrovoc/c_2509 http://aims.fao.org/aos/agrovoc/c_7518 |
author |
Jacquemard, Jean-Charles Suryana, Edyana Breton, Frédéric Lubis, Zulkifli De Franqueville, Hubert |
author_facet |
Jacquemard, Jean-Charles Suryana, Edyana Breton, Frédéric Lubis, Zulkifli De Franqueville, Hubert |
author_sort |
Jacquemard, Jean-Charles |
title |
Basal lignified star-shaped cavity in oil palm (Elaeis guineensis Jacq.): early development in nursery and consequences for BSR control |
title_short |
Basal lignified star-shaped cavity in oil palm (Elaeis guineensis Jacq.): early development in nursery and consequences for BSR control |
title_full |
Basal lignified star-shaped cavity in oil palm (Elaeis guineensis Jacq.): early development in nursery and consequences for BSR control |
title_fullStr |
Basal lignified star-shaped cavity in oil palm (Elaeis guineensis Jacq.): early development in nursery and consequences for BSR control |
title_full_unstemmed |
Basal lignified star-shaped cavity in oil palm (Elaeis guineensis Jacq.): early development in nursery and consequences for BSR control |
title_sort |
basal lignified star-shaped cavity in oil palm (elaeis guineensis jacq.): early development in nursery and consequences for bsr control |
publisher |
s.n. |
url |
http://agritrop.cirad.fr/554902/ http://agritrop.cirad.fr/554902/1/document_554902.pdf |
work_keys_str_mv |
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