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Ripening process in relation to temperature and sugar content in seeds of Scots pine (Pinus silvestris L.)

Kardell, Lars and Bobeck, Stina and Nyman, Bengt (1973). Ripening process in relation to temperature and sugar content in seeds of Scots pine (Pinus silvestris L.). Technical Report. Stockholm: Predecessors to SLU > Royal School of Forestry, Sveriges lantbruksuniversitet. Studia forestalia Suecica ; 107
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Abstract

The investigation was performed on seeds of Scots pine (Pinus silvestris L.) from one and the same stand of trees in three consecutive years with samplings during 1 September-1 April. Germination capacities, relative germination rates and concomitant changes of carbohydrates during the actual ripening period were studied. The end of the ripening process during September-October has been discussed in relation to frost temperatures during the same period. It has been stressed that unfavorable temperatures during sensitive phases of the ripening process can damage the seeds' further development, and jeopardize the well-known correlation between the mean temperatures for the months June-September and the ripeness. Quantitative changes of glucose, fructose, sucrose, raffinose and stachyose were studied with gas-chromatography. For starch a colorimetric technique was used. The content of glucose and fructose evidently decreased with increasing ripeness during September-October. A concomitant new formation of sucrose, raffinose and stachyose was observed. Starch was found in all samples, irrespective of the sampling dates, with a minimum content in September and with a more irregular but similar trend of new formation. To correlate the degree of ripeness expressed in the germinability with some coincidental content of one of the carbohydrates has not been possible.

Authors/Creators:Kardell, Lars and Bobeck, Stina and Nyman, Bengt
Title:Ripening process in relation to temperature and sugar content in seeds of Scots pine (Pinus silvestris L.)
Series/Journal:Studia forestalia Suecica (0039-3150)
Year of publishing :1973
Number:107
Number of Pages:21
Place of Publication:Stockholm
Publisher:Skogshögskolan
ISBN for printed version:91-38-01622-2
ISSN:0039-3150
Language:English
Publication Type:Report
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Plant breeding
Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Forestry
Keywords:seed quality, Pinus silvestris, ripening process, sugar content
URN:NBN:urn:nbn:se:slu:epsilon-9-91
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-9-91
ID Code:5708
Department:Predecessors to SLU > Royal School of Forestry
Deposited By: Skogsbiblioteket Umeå
Deposited On:21 Feb 2011 00:00
Metadata Last Modified:13 Nov 2015 13:04

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