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External factors influencing female flowering in Picea abies (L.) Karst.

Lindgren, Katarina and Ekberg, Inger and Eriksson, Gösta (1977). External factors influencing female flowering in Picea abies (L.) Karst. Stockholm: UNSPECIFIED, Sveriges lantbruksuniversitet. Studia forestalia Suecica ; 142
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Abstract

Inventories of the cone crop in the vicinity of meteorological stations in southern Sweden were made in the years 1973-1975. Correlations between cone crop and the following variables for the year of flower primordia initiation-cone crop, some temperature variables and precipitation-were calculated. The relationship between cone crop and some other factors was studied briefly. The investigation revealed that high temperature during the middle or end of June provokes increased flowering, on the condition that the cone crop during the year of flower primordia initiation is scanty. High precipitation during June may have a negative effect on the flowering. Similar studies on the relationship between cone crop and temperature, precipitation and cone crop in the year of bud differentiation were conducted using the data collected by the National Forest Survey during the years 1961- 1974. These correlations supported the observations made in our own inventories. Concerning the location of seed orchards of Picea abies, the results suggest that the south-eastern part of Sweden is most suitable.

Authors/Creators:Lindgren, Katarina and Ekberg, Inger and Eriksson, Gösta
Title:External factors influencing female flowering in Picea abies (L.) Karst.
Series/Journal:Studia forestalia Suecica (0039-3150)
Year of publishing :1977
Number:142
Number of Pages:53
Place of Publication:Stockholm
Publisher:Skogshögskolan
ISBN for printed version:91-38-03762-9
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
Keywords:external factors, female flowering, Picea abies (L.) Karst.
URN:NBN:urn:nbn:se:slu:epsilon-9-53
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-9-53
ID Code:5514
Faculty:S - Faculty of Forest Sciences
Deposited By: Elisabeth Lissén
Deposited On:30 Nov 2010 00:00
Metadata Last Modified:21 Dec 2015 10:01

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