Utilize este identificador para referenciar este registo: http://hdl.handle.net/10348/1525
Título: Response of RockyMountain Juniper Juniperus scopulorum Seeds to Seed Conditioning and Germination Treatments
Autor: Barbour, J
Carvalho, J
Palavras-chave: Germination
Juniper
Data: 2009
Editora: Seed Technology
Resumo: Rocky Mountain juniper (Juniperus scopulorum Sarg.) seeds are difficult to germinate in the laboratory and nursery due tomultiple dormancies. The response of RockyMountain juniper to different seed conditioning and germination treatments were examined. The viability of the original seedlot was increased through seed sizing and weight separation. Following this, 21 germination treatments were tested to determine their effectiveness in promoting germination. Fiftheen new germination treatments were evaluated and compared with the six best germination treatments cited in the literature. Seed sizing did not affect seed viability significantly, but weight separation increased viability about 7 to 10% formediumto heavy weight classes.Tree germination treatments yielded the highest germination ranging from 45 to 55%. A warmstratification period followed by a cold stratification period produced the best germination; increasing thewarmstratification from8 to 12 and 16 weeks improved germination.The best germination treatment was a 3 d water soak, followed by 16 weeks warmstratification and then 13 weeks cold stratification. Reducing the warm stratification period by 4 weeks was the second best germination treatment. The third and fourth best germination treatments were VanHaverbeke and Comer’s 90min peroxide soak and a 6 d 10,000 ppm citric acid soak followed by warm and then cold stratification. e study shows that additional seed sizing and weight separation coupled with germination treatments are required to increase germination for RockyMountain juniper seeds.
Revisão por Pares: yes
URI: http://hdl.handle.net/10348/1525
Tipo de Documento: Artigo
Aparece nas colecções:OLD - DCFAP - Artigo em Revista Científica Internacional

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