Abundance and control of Lygus rugulipennis (Heteroptera: Miridae) on Scots pine (Pinus sylvestris L.) nursery stock

New Forests ◽  
1990 ◽  
Vol 4 (1) ◽  
pp. 13-25 ◽  
Author(s):  
Jarmo K. Holopainen ◽  
Risto Rikala
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Lygus Rugulipennis ◽  
Nursery Stock ◽  
And Control

scholarly journals Environmental pollution changes in membrane lipids, antioxidants and vitality of Scots pine (Pinus sylvestris L.) pollen

2011 ◽  
Vol 72 (2) ◽  
pp. 99-104 ◽  
Author(s):  
Paweł M. Pukacki ◽  
Władysław Chałupka
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Membrane Lipids ◽  
Pollen Grains ◽  
Pollution Source ◽  
Polluted Area ◽  
Cytoplasmic Membranes ◽  
And Control ◽  
Germination Of Pollen ◽  
Low Molecular Antioxidants

Investigations were carried out on pollen grains of Scots pine (<em>Pinus sylvestris </em>L.) collected from trees at 1.5, 3, 4 km and control, 20 km from the Luboń factory producing mineral fertilisers. The percentage of germination of pollen formed close to the pollution source was ca 20% lower compared to the control pollen. Lowered vitality of the pollen was effected in changes of the structure of cytoplasmic membranes. Pollen from the polluted area contained ca 15% less total phospholipids, mainly phosphatidylcholine and phosphatytidylinositol and had a lower content of soluble proteins and less of low molecular antioxidants, such as thiols and ascorbic acid. Composition of total fatty acid in phospholipids fractions showed a significant reduction in the degree of unsaturation of fatty acids. Pollen originating from the polluted area and stored at -30°C showed considerably stronger degradation of cytoplasmic membranes than control.

Needle ultrastructure and starch content in Scots pine and Norway spruce after ozone fumigation

1996 ◽  
Vol 74 (1) ◽  
pp. 67-76 ◽  
Author(s):  
Toini Holopainen ◽  
Seija Anttonen ◽  
Virpi Palomäki ◽  
Pirjo Kainulainen ◽  
Jarmo K. Holopainen
Keyword(s):  
Picea Abies ◽  
Pinus Sylvestris ◽  
Norway Spruce ◽  
Scots Pine ◽  
Starch Content ◽  
Ultrastructural Changes ◽  
Cell Organelles ◽  
Mesophyll Cells ◽  
Nursery Stock ◽  
Chloroplast Stroma

The ultrastructure of current and previous year needles of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies L.) Karst. was studied after exposures to several different ozone concentrations (100 to 600 nL∙L−1) and doses in a chamber system. The ultrastructural changes observed in different experiments in both of these species were qualitatively very similar. Changes were observed in the mesophyll tissue, in which increased density of chloroplast stroma and an increase of ribosome-like granules were the early symptoms, followed by a decrease of the size of chloroplasts and starch grains. Simultaneously a decline of needle starch content could be measured. After fumigation with the lower concentrations, hypertrophy of microbodies were also apparent. When the seedlings were fumigated with the highest concentration (600 nL∙L−1) a subsequent disintegration of cytoplasm and other cell organelles and finally a collapse of the contents of the mesophyll cells, leading to visible injuries, was found. Scots pine nursery stock seedlings appeared to be about equal in sensitivity to ozone as Norway spruce clonal stock. The spruce clones showed differences in sensitivity to the ozone fumigations. Since the observed symptoms are consistent in two species through a concentration gradient of ozone, and also agree with the information dealing with ozone injuries in literature, it is possible to use ultrastructural observations for diagnosing the presence of ozone injuries. Keywords: ozone, Picea abies, Pinus sylvestris, needle ultrastructure, starch.

scholarly journals Damage caused by Lophodermium needle cast in open-pollinated and control-crossed progeny trials of Scots pine (Pinus sylvestris L.)

2018 ◽  
Vol 94 (02) ◽  
pp. 155-161 ◽  
Author(s):  
Una Neimane ◽  
Kaspars Polmanis ◽  
Astra Zaļuma ◽  
Dārta Kļaviņa ◽  
Tālis Gaitnieks ◽  
...  
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Needle Cast ◽  
And Control

scholarly journals Stimulating the growth of trees with ashes of various biofuels (wood, peat) on a cutaway peatland

2010 ◽  
Vol 52 (1) ◽  
pp. 60-71 ◽  
Author(s):  
Karin Kikamägi ◽  
Katri Ots
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Betula Pendula ◽  
Growing Season ◽  
Wood Ash ◽  
Height Increment ◽  
And Control ◽  
Positive Effect ◽  
Root Collar ◽  
Scots Pine Needles

Puittaimede kasvu stimuleerimine erinevate biokütuste (puit, turvas) tuha liikidega ammendatud freesturbaväljalThe aim of the study was to investigate the effect of fertilization on the growth of Silver birchBetula pendulaRoth and Scots pinePinus sylvestrisL. seedlings on a cutaway peatland (Ulila, 58°22'N, 26°26'E). Five treatments were established: wood ash (10 000 and 5000 kg/ha), peat and wood ash mixture (10 000 and 5000 kg/ha) and control (unfertilized field). Results of analysis showed that the pH of peat in the cutaway peatland was before treatment 3.5 and it rose after fertilization by up to 0.7 units by the end of the first growing season. The treatment with 10 000 kg/ha of wood ash gave the best results: the annual height increment of Silver birches during the first growing season after fertilization was 4.5 times higher and that of Scots pines 1.1 times higher than control. In the second growing season after fertilization the increment was respectively 16.3 and 3.3 times higher than control. The root collar diameters of Silver birches were 4.4 time larger these of Scots pines 2.1 times larger than control. Scots pine needles were 2.2 times longer than control and the leaf area of the Silver birches was 6 times larger than control, which also shows a positive effect of fertilization. Peat ash treatment was also favourable, although its effect was much smaller than the effect of wood ash.

Effect of heat on seed germination of Pinus sylvestris and Pinus nigra ssp. pallasiana

2006 ◽  
Vol 15 (2) ◽  
pp. 283 ◽  
Author(s):  
Ibrahim Turna ◽  
Ertugrul Bilgili
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Present Note ◽  
Sharp Decrease ◽  
Pinus Nigra ◽  
Black Pine ◽  
Crown Cover ◽  
And Control ◽  
Positive Effect ◽  
Anatolian Black Pine

The present note presents and explains the results of a study dealing with the germination of seeds subjected to heat. Seeds of Scots pine (Pinus sylvestris L.) and Anatolian black pine (Pinus nigra ssp. pallasiana) were exposed to a range of temperatures (70, 90, 110, 130, and 150°C) for different exposure times (1 and 5 min). Germination rates were similar for all treatments and control at 1 min exposure for Anatolian black pine seeds, and almost no germination took place for all treatments at 5 min exposure. Similar results were obtained for Scots pine seeds, with the exception of a sharp decrease in the number of seeds germinated above 110°C. The effect of increasing the exposure time to 5 min was immediate, and no germination took place above 90°C. Results obtained indicate that seeds of the two species do not necessarily need fire for successful regeneration, but fires may have a positive effect on the germination by removing crown cover, thereby providing more light for the seeds deposited to the ground.

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