caa a22 4500 463218426 CHVBK 20180405153204.0 cr unu---uuuuu 170326e20070301xx s 000 0 eng 10.1007/s11056-006-9020-9 doi (NATIONALLICENCE)springer-10.1007/s11056-006-9020-9 Germination of Juniperus procera seeds in response to stratification and smoke treatments, and detection of insect-damaged seeds with VIS+NIR spectroscopy [Elektronische Daten] [Mulualem Tigabu, Joakim Fjellström, Per Odén, Demel Teketay] Seeds of Juniperus procera collected from five provenances across its geographic range in Ethiopia were subjected to cold-moist stratification at 5°C or 10°C for 6-12weeks. The effect of aqueous smoke solution in overcoming the light requirement for germination, and the potential of visible (VIS) and near infrared reflectance (NIR) spectroscopy for sorting sound and insect-damaged seeds were also investigated. Highly significant differences in germination were detected among provenances (P<0.0001) and stratification periods (P< 0.0001), but not between temperature regimes (P=0.111). Seeds from the south and southeast distribution ranges had higher percentage germination after 6weeks of stratification than seeds collected from north, northwest and central ranges of distribution. The smoke treatment did not affect germination regardless of whether the seeds were exposed to light. Exposure to light increased germination capacity three fold. Sound and damaged seeds were distinguished with 90% accuracy using VIS+NIR spectroscopy. It can be concluded that dormancy in juniper seeds varies with provenances, and cold stratification for 6weeks alleviates dormancy in some seed lots. Tentatively, smoke treatment seems ineffective in overcoming photo-dormancy in juniper seeds. VIS+NIR spectroscopy has demonstrated a great potential for sorting damaged seeds, thereby upgrading seed lot purity. Springer Science+Business Media B.V., 2006 Dormancy nationallicence Ethiopia nationallicence Light nationallicence Provenance nationallicence Seed purity nationallicence Tropical tree nationallicence Tigabu Mulualem Department of Forest Genetics and Plant Physiology, Tropical Silviculture and Seed Laboratory, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden aut Fjellström Joakim Department of Forest Genetics and Plant Physiology, Tropical Silviculture and Seed Laboratory, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden aut Odén Per Department of Forest Genetics and Plant Physiology, Tropical Silviculture and Seed Laboratory, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden aut Teketay Demel Forest Stewardship Council, African Regional Office (FSC Africa), P.O.Box RY 615, Kumasi, Ghana aut New Forests Kluwer Academic Publishers 33/2(2007-03-01), 155-169 0169-4286 33:2<155 2007 33 11056 https://doi.org/10.1007/s11056-006-9020-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11056-006-9020-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tigabu Mulualem Department of Forest Genetics and Plant Physiology, Tropical Silviculture and Seed Laboratory, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden aut NATIONALLICENCE 700 1- Fjellström Joakim Department of Forest Genetics and Plant Physiology, Tropical Silviculture and Seed Laboratory, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden aut NATIONALLICENCE 700 1- Odén Per Department of Forest Genetics and Plant Physiology, Tropical Silviculture and Seed Laboratory, Swedish University of Agricultural Sciences, SE-901 83, Umeå, Sweden aut NATIONALLICENCE 700 1- Teketay Demel Forest Stewardship Council, African Regional Office (FSC Africa), P.O.Box RY 615, Kumasi, Ghana aut NATIONALLICENCE 773 0- New Forests Kluwer Academic Publishers 33/2(2007-03-01), 155-169 0169-4286 33:2<155 2007 33 11056 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer