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Titre :
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(Effect of greenhouse environment on pollen production and pollen viability in Japanese larch)
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Auteurs :
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G. Philippe ;
CEMAGREF NOGENT SUR VERNISSON AGNO
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Type de document :
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article/chapitre/communication
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Année de publication :
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1994
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Format :
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p. 98-100
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Note générale :
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Sigle : CEMAGREF
Sigle : AGNO
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Langues:
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= Anglais
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Catégories :
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Matériel végétal, techniques de production, pépinière
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Mots-clés:
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LARIX LEPTOLEPIS
;
CLONE
;
SERRE
;
POLLEN
;
QUALITE
;
RENDEMENT
;
VIABILITE
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Résumé :
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This experiment aimed at comparing characteristics (production:strobilus and viability) of pollen collected within a greenhouse and outdoor. The 20 potted grafts of Japanese larch which were brought into the greenhouse in February 1993 produced on the average 4.2 mg of pollen per strobilus. Pollen quality was assessed through conductivity assay. Il one excepts one graft which produced pollen of poor quality, viability was correct. Unfortunately, comparison with outdoor pollen collection proved impossible since, outside, frost damaged the male catkins. Nevertheless, this result shows clearly one advantage of the greenhouse : by protecting the grafts against frost, it allowed to save 1993 pollen crop.
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Source :
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Northern conifers in fast growing conditions : a step towards an adequate wood supply for industry : first year progress report (Air contract N° CT 920143), MONCHAUX P.(COORD)
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