NDLI: Breaking seed dormancy in European rowan seeds and its implications for regeneration

Content Provider	Springer Nature Link
Author	Afroze, Farhana O’Reilly, Cor
Copyright Year	2013
Abstract	The effects of the presence of a medium, seed moisture content, warm and chilling treatments on the germination response of European rowan (Sorbus aucuparia L.) seeds of Irish origin were investigated with the aim of reducing precocious (or premature) germination and maximising germination after pretreatment. After adjusting seed moisture content, seeds of two lots were subjected to warm treatment for 0–6 weeks followed by 0–50 weeks of chilling. The seeds then were allowed to germinate at a constant 15 °C with 8 h lighting per day or 20 (dark)/30 °C (light). Some seeds were treated in the fully imbibed (FI) state in a medium (standard operational treatment). Seed lot effects were evident, but treatment effects were consistent in each lot. Warm treatment greatly increased germination and reduced precocious germination. The presence of a medium was not required to achieve high germination and seed moisture content close to the FI state was needed to maximise germination. Climate change may reduce the ability of this species to regenerate naturally, favouring other species that require less chilling.
Starting Page	547
Ending Page	557
Page Count	11
File Format	PDF
ISSN	01694286
Journal	New Forests
Volume Number	44
Issue Number	4
e-ISSN	15735095
Language	English
Publisher	Springer Netherlands
Publisher Date	2013-01-30
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Seed moisture content Pretreatments Dormancy Chilling Germination Forestry
Content Type	Text
Resource Type	Article
Subject	Forestry

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