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.

scholarly journals Морфологические особенности пыльцы «ведьминых мётел» мутационного типа у сосны обыкновенной (Pinus sylvestris L.)

2017 ◽  
Vol 7 (4) ◽  
pp. 234-239
Author(s):  
M. S. Yamburov ◽  
S. B. Romanova ◽  
A. S. Prokopyev
Keyword(s):  
Pinus Sylvestris ◽  
Comparative Study ◽  
Scots Pine ◽  
Pollen Morphology ◽  
Pollen Grains ◽  
Abnormal Development ◽  
Tree Crown ◽  
Normal Part ◽  
Study Results ◽  
The Comparative Study

The comparative study results of pollen morphology of the mutational witches’ brooms and the normal part of the tree crown in Scots pine are presented. There is a decrease of pollen grains size, especially the sacci, in witches’ brooms. The witches’ brooms with more intensive branching have more expressive changes. Also, the witches’ brooms have more abnormal pollen grains. The data on the occurrence about 10 anomalous morphotypes of pollen grains are reported, most of that are related to the abnormal development of succi: different size of sacci, deformed sacci, reduced sacci, fused sacci, additional sacci, compress sacci, lack of one or both sacci. A high percentage of anomalies in the sacci development may be associated with less developed reticular sculpture of ectexine in witches’ brooms pollen.

The importance of being the first pollen in the strobili of Scots pine

2008 ◽  
Vol 38 (12) ◽  
pp. 2976-2980 ◽  
Author(s):  
Saila Varis ◽  
Arja Santanen ◽  
Anne Pakkanen ◽  
Pertti Pulkkinen
Keyword(s):  
Pinus Sylvestris ◽  
Scots Pine ◽  
Pollen Grains ◽  
Seed Orchard ◽  
Pollen Grain ◽  
Seed Orchards ◽  
Pollination Experiments ◽  
Seed Crop ◽  
Pollen Types ◽  
Pine Pollen

Timing of pollen arrival may affect the level of seeds fertilized by pollen from outside seed orchards, especially in seed orchards of Scots pine ( Pinus sylvestris L.) established in southern Finland with stock from northern populations. We performed sequential pollination experiments with Scots pine pollen collected from seed orchard clones originating from southern and northern Finland and recipient strobili in clones originating from southern Finland. When southern pollen was introduced first, seeds were sired equally by northern and southern genotypes. When northern pollen was introduced first, northern genotypes were found in 75% of the resulting seeds. When both pollen types were introduced at the same time, the resulting seed crop was split almost equally between northern and southern genotypes. These results do not unconditionally support the idea that the first pollen grain in the pollen chamber always fertilizes the ovum; instead, they suggest a more complex way of competition between pollen grains.

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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