TAILIEUCHUNG - Báo cáo lâm nghiệp: "Germination response of alder and birch seeds to applied gibberellic acid and priming treatments in combination with chilling"

Tuyển tập các báo cáo nghiên cứu về lâm nghiệp được đăng trên tạp chí lâm nghiệp Original article đề tài: Germination response of alder and birch seeds to applied gibberellic acid and priming treatments in combination with chilling. | Ann. For. Sci. 64 2007 385-394 INRA EDP Sciences 2007 DOI forest 2007015 Available online at Original article Germination response of alder and birch seeds to applied gibberellic acid and priming treatments in combination with chilling Norberto DE Atrip Conor O REILLY UCD School of Biology and Environmental Science UCD College of Life Sciences University College Dublin Belfield Dublin 4 Ireland Received 20 April 2006 accepted 13 December 2006 Abstract - The effects of seed moisture content MC gibberellic acid GA3 concentration chilling and priming pretreatments on the germination of common alder Alnus glutinosa and downey birch Betula pubescens seeds were examined. After treatment the seeds were allowed to germinate for 42 days at 15 C or 20 C dark 30 C light . Treatment responses were similar at both temperatures and in both species. GA3 treatment of seeds in fully imbibed FI state for 30 days or at the lower target moisture content TMC for 30-90 days significantly improved germination but longer treatment periods reduced it FI seeds or had no effect TMC seeds . Priming for two days improved germination in the FI seeds but more than 4 days reduced it. Priming for up to 14 days had little effect on the germination of the TMC seeds. alder birch seed GA3 priming Résumé - Réponse germinative des graines de l aulne glutineux et du bouleau pubescent à l application d acide gibbérellique et de traitements d amorẹage en combinaison avec du froid. Les effets de l humidité des graines MC de la concentration en acide gibbérellique GA3 du froid et des prétraitements d amor age sur la germination des graines d Alnus glutinosa et de Betulus pubescens ont été examinés. Après traitement les graines ont été mise à germer pour 42 jours à 15 C ou 20 C à l obscurité 30 C à la lumière . Les réponses au traitement ont été similaires aux deux températures et pour les deux espèces. Le traitement par GA3 des graines totalement imbibées F1 pour 30 jours ou de .

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