scholarly journals Significance of the root connection on the dormancy release and vegetative bud burst of Norway spruce (Picea abies) seedlings in relation to accumulated chilling

Silva Fennica ◽  
2016 ◽  
Vol 50 (1) ◽  
Author(s):  
Jouni Partanen ◽  
Risto Häkkinen ◽  
Heikki Hänninen
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Bud Burst ◽  
Dormancy Release ◽  
Vegetative Bud ◽  
Root Connection

Bud burst in Norway spruce (Picea abies): preliminary evidence for age-specific rest patterns

Trees ◽  
2004 ◽  
Vol 19 (1) ◽  
pp. 66-72 ◽  
Author(s):  
Jouni Partanen ◽  
Heikki H�nninen ◽  
Risto H�kkinen
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Preliminary Evidence ◽  
Bud Burst

Microsatellite repeats are not randomly distributed within Norway spruce (Picea abies K.) expressed sequences

Genome ◽  
2000 ◽  
Vol 43 (1) ◽  
pp. 41-46 ◽  
Author(s):  
I Scotti ◽  
F Magni ◽  
R Fink ◽  
W Powell ◽  
G Binelli ◽  
...  
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Natural Variation ◽  
Average Length ◽  
Coding Region ◽  
Microsatellite Repeats ◽  
Repeat Units ◽  
Potential Applications ◽  
Vegetative Bud ◽  
Simple Sequence

A Norway spruce (Picea abies K.) cDNA library obtained from vegetative bud tissue was screened for the presence of (AG)n and (AC)n microsatellite repeats. Ten (AG)n and six (AC)n microsatellites were found, with an average length of 25.5 repeat units. Most of the microsatellites are simple perfect repeats. The microsatellite distribution within the clones is clearly non-random, with different classes of repeats lying in different positions relative to the coding region and in a highly conserved orientation. An estimate of the frequency of dinucleotide microsatellites in expressed regions was obtained, showing that SSRs (simple sequence repeats) are found in genes about 20 times less frequently than in random genomic clones, with (AG)n repeats more frequent than (AC)n repeats. Potential applications of these sequences as expressed region-based molecular markers are shown by developing six SSR markers for the detection of natural variation in Norway spruce populations and testing two of them for the identification of illegitimate progenies from a mapping population. Key words: Picea abies, microsatellites, SSRs, ESTs, population genetics, trees.

Variation in timing of bud-burst of Ulmus minor clones from different geographical origins

2006 ◽  
Vol 36 (8) ◽  
pp. 1982-1991 ◽  
Author(s):  
Luisa Ghelardini ◽  
Mauro Falusi ◽  
Alberto Santini
Keyword(s):  
Thermal Time ◽  
Ex Situ ◽  
Bud Burst ◽  
Dormancy Release ◽  
Natural Area ◽  
Ulmus Minor ◽  
Northern Latitudes ◽  
Ex Situ Collections ◽  
Time Requirements ◽  
Vegetative Bud

The vegetative bud-burst phenology of field elm (Ulmus minor Mill.) clones originating from a large geographical range within the species natural area was studied at three European sites over a 5-year period in ex situ collections constituted for the conservation of elm genetic resources. At all the sites and in all the years of study, the date of bud burst and the required thermal time to bud burst were directly related to latitude and altitude of origin of the clones. Nevertheless, the differences among origins were reduced with increasing the chilling duration, suggesting that the clones from more northern latitudes and higher altitudes required longer chilling for dormancy release. Analyses of variance performed on selected groups of clones from different latitudinal origins showed that the order of bud burst was stable among years and that the thermal time requirements decreased in all the groups with increasing chilling, with significant differences among groups; southern clones satisfied their chilling requirements after a shorter chilling duration.

scholarly journals Effects of photoperiod and temperature on the timing of bud burst in Norway spruce (Picea abies)

1998 ◽  
Vol 18 (12) ◽  
pp. 811-816 ◽  
Author(s):  
J. Partanen ◽  
V. Koski ◽  
H. Hanninen
Keyword(s):  
Picea Abies ◽  
Norway Spruce ◽  
Bud Burst
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