Improved elongation of Scots pine seedlings under blue light depletion is not dependent on resource acquisition

2009 ◽  
Vol 36 (8) ◽  
pp. 742 ◽  
Author(s):  
Marian Sarala ◽  
Erja Taulavuori ◽  
Jouni Karhu ◽  
Eira-Maija Savonen ◽  
Kari Laine ◽  
...  
Keyword(s):  
Lipid Peroxidation ◽  
Blue Light ◽  
Scots Pine ◽  
Shoot Elongation ◽  
Resource Acquisition ◽  
Pigment Composition ◽  
Frost Hardening ◽  
Inhibiting Effect ◽  
Pine Seedlings ◽  
Growth Inhibiting

Removal of blue light (400–500 nm) induced shoot elongation of 2-year-old Scots pine (Pinus sylvestris L.) seedlings, which was not related to resource acquisition (carbohydrates, C/N ratio and soluble proteins) and frost hardening. The seedlings were grown in northern Finland (64°N) in plexiglass chambers, either orange in colour or transparent, during elongation and cold hardening periods in 2001. The orange chamber removed the blue wavelengths. The results suggest that the growth inhibiting effect of blue light on Scots pine elongation is probably a photomorphogenic regulation response; the removal of blue light did not affect the gas exchange and accumulation of growth resources. In addition, the removal of blue light also did not affect the physiological parameters (pigment composition, chlorophyll fluorescence and lipid peroxidation) measured during the preparation for winter.

Shoot morphology and shoot growth potential in 1-year-old Scots pine seedlings

1981 ◽  
Vol 11 (4) ◽  
pp. 789-795 ◽  
Author(s):  
S. Thompson
Keyword(s):  
Scots Pine ◽  
Shoot Growth ◽  
Growing Season ◽  
Shoot Elongation ◽  
Growth Potential ◽  
Shoot Morphology ◽  
Growing Seasons ◽  
Pine Seedlings

When seedlings of a single seed source of Scots pine (Pinussylvestris L.) were raised for 26 weeks in a naturally lit, heated greenhouse, two types of shoot morphology were observed. Type 1 was that normally found in 1-year-old seedlings. Type 2 had a shoot morphology similar to that of seedlings raised outdoors for two growing seasons. When compared with type 1 plants, type 2 plants had an earlier start to shoot elongation, set their buds earlier, and stopped shoot elongation sooner. After one growing season, type 2 plants were shorter, had fewer stem units for shoot elongation in the second season, but carried a greater foliage biomass than 1-year-old type plants. After two seasons they remained shorter. Thus, plant rearing practices which result in the production of seedlings with this type of shoot morphology arc undesirable.The relationship between early "budsct," shoot morphology, and plant height suggests that the proportion of seedlings with a 2-year-old shoot morphology after one growing season in a heated greenhouse may be used as an early test for height growth potential in seed origins and possibly in progenies of north temperate pine species.

Elongation of Scots pine seedlings under blue light depletion is independent of etiolation

2007 ◽  
Vol 60 (3) ◽  
pp. 340-343 ◽  
Author(s):  
Marian Sarala ◽  
Kari Taulavuori ◽  
Erja Taulavuori ◽  
Jouni Karhu ◽  
Kari Laine
Keyword(s):  
Blue Light ◽  
Scots Pine ◽  
Pine Seedlings

scholarly journals Effect of Ecotype and Latitude on Growth, Frost Hardiness, and Oxidative Stress of South to North Transplanted Scots Pine Seedlings

2010 ◽  
Vol 2010 ◽  
pp. 1-16 ◽  
Author(s):  
Erja Taulavuori ◽  
Kari Taulavuori ◽  
Ahti Niinimaa ◽  
Kari Laine
Keyword(s):  
Oxidative Stress ◽  
Lipid Peroxidation ◽  
Total Nitrogen ◽  
Scots Pine ◽  
Protein Oxidation ◽  
Reductase Activity ◽  
Shoot Elongation ◽  
Frost Hardiness ◽  
Glutathione Reductase Activity ◽  
And Oxidative Stress

Ecotypes of Pinus sylvestris seedlings from Kuhmo (64°N) and Ranua (66°N) were transplanted to 0 (control), 1, 2, and 3°N higher latitude in Northern Finland in 1997. Sampling was carried out twice per year (spring/autumn) during 1998–2000. Shoot elongation, total nitrogen concentration, frost hardiness and oxidative stress state (lipid peroxidation, glutathione reductase activity, and protein oxidation) in the needles were analyzed. Comparison between the seasonal sampling times indicated that total nitrogen, lipid peroxidation, glutathione reductase activity, and protein oxidation were lower in autumn, during which the frost hardiness was higher. The above suggests that the stress conditions were higher in spring. Comparison between the origins of the seedlings demonstrated that shoot elongation of the northern origin were minor, while their total nitrogen concentrations and frost hardiness were more pronounced. Effect of latitude on elongation of Scots pine is most probably a result of a combination of temperature and light quality. No delay in frost hardening due to higher latitude was observed during the autumnal equinox. No marked stress caused by transplantation to the north was either observed. It is concluded that southern ecotypes of Scots pine have the potential to adapt to migration driven by a warming climate.

Frost hardening of Scots pine seedlings in relation to the climatic year-to-year variation in air temperature

2013 ◽  
Vol 177 ◽  
pp. 1-9 ◽  
Author(s):  
H. Hänninen ◽  
G. Zhang ◽  
R. Rikala ◽  
J. Luoranen ◽  
K. Konttinen ◽  
...  
Keyword(s):  
Scots Pine ◽  
Air Temperature ◽  
Frost Hardening ◽  
Pine Seedlings

scholarly journals Elongation of Scots pine seedlings under blue light depletion

Silva Fennica ◽  
2005 ◽  
Vol 39 (1) ◽  
Author(s):  
Kari Taulavuori ◽  
Marian Sarala ◽  
Jouni Karhu ◽  
Erja Taulavuori ◽  
Eero Kubin ◽  
...  
Keyword(s):  
Blue Light ◽  
Scots Pine ◽  
Pine Seedlings

Silvicultural characteristics of a Scots pine stand on drift sands

1992 ◽  
Vol 57 ◽  
Author(s):  
D. Maddelein ◽  
N. Lust
Keyword(s):  
Scots Pine ◽  
Mixed Forest ◽  
Rotation Period ◽  
Average Height ◽  
Indigenous Species ◽  
Pedunculate Oak ◽  
Black Cherry ◽  
Humus Layer ◽  
Pine Seedlings ◽  
Pine Regeneration

The  study of a seventy years old stand of Scots pine on drift sands proves that  Scots pine growth on these sites was and is still relatively good: average  diameter 27.6 cm, average height 19.4 m, standing volume 213 m3 and an annual increment  of 4.9 m3.ha-1.yr-1. All Scots pines  belong to the upper storey. Yet considerable differences in crown development  and vitality are observed. The current growth rate and the spontaneous  settlement of pine seedlings under canopy show the ideal conditions for the  creation of a high forest with reserves. Anyway a rotation period of more  than 70 years is recommendable.     On several places a consolidated regeneration of Scots pine seedlings under  canopy occur. Groups with a stem number of 700 to 3,500 seedlings per are, ranging  in age from 3 to 11 years and in height from 10 to 170 cm, are present. This  Scots pine regeneration has developed in a normal mor humus layer and in a  dense Deschampsia mat.      Broadleaved regeneration is not so abundant, and consists for 75 % of black  cherry. Absence of seed trees, browsing damage and the exclusive character of  black cherry are the limiting factors for the installation and survival of  valuable indigenous species, such as pedunculate oak.     Provided that black cherry is removed and that the regeneration is  protected against wild damage, it is possible to create a mixed forest  dominated by Scots pine but with a considerable admixture of indigenous  broadleaved trees. However, if black cherry will not be sufficiently  controlled, it can be expected that in a first phase black cherry will  dominate the understorey, that it will prevent the regeneration of all other  species and that, very soon, it will form an almost single-species dominated  stage in forest succession.

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