scholarly journals INFLUENCE OF GROWTH STIMULATORS CLONEX AND VITROCLON ROOTING COMPLEX ON ROOTING AND CALL FORMATION OF CUTTINGS PICEA PUNGENS \'GLAUCA\'

2021 ◽  
pp. 11-15
Author(s):  
A.T. Nurmanbetova ◽  
M.K. Akhmatov
Keyword(s):  
Picea Pungens

Some effects of self-, cross-, and open-pollinations in Picea pungens

1984 ◽  
Vol 62 (2) ◽  
pp. 392-395 ◽  
Author(s):  
W. H. Cram
Keyword(s):  
Picea Pungens ◽  
Seed Yields

Self-fertility of Picea pungens Engelm. ranged from 0 to 176 seeds per cone for 72 trees. Self-pollinations reduced the average seed yields to 40 and 23% of the respective cross-, and open(wind)-pollinations. Selfing decreased the germination for nonstratified seed to 71% of that for cross-pollinated seed, whereas the germination of stratified selfed and crossed seed varied from 80 to 100%. Selfing also depressed the growth of 1- to 5-year-old seedlings.

Evidence for Picea pungens in north-central Montana and its significance

1978 ◽  
Vol 56 (9) ◽  
pp. 1118-1121 ◽  
Author(s):  
W. L. Strong
Keyword(s):  
Native Species ◽  
The State ◽  
Geographical Range ◽  
North Central ◽  
Picea Pungens ◽  
Central Montana

The analysis of Picea cone scales from the Sweetgrass Hills of Montana substantiates the existence of Picea pungens Engelm. in north-central Montana. These results extend the geographical range of P. pungens and identify a new native species within the state of Montana.

Lignocellulose degradation by Fusarium species

1983 ◽  
Vol 61 (4) ◽  
pp. 1194-1198 ◽  
Author(s):  
John B. Sutherland ◽  
Anthony L. Pometto III ◽  
Don L. Crawford
Keyword(s):  
Wheat Straw ◽  
Degradation Products ◽  
Fusarium Species ◽  
Water Soluble ◽  
Lignocellulose Degradation ◽  
Blue Spruce ◽  
Picea Pungens ◽  
Weight Losses ◽  
Aromatic Degradation ◽  
Different Strains

Eighteen strains of fungi in the genus Fusarium, including varieties of F. episphaeria, F. lateritium, F. moniliforme, F. nivale, F. oxysporum, F. rigidiusculum, F. roseum, F. solani, and F. tricinctum, slowly degraded lignocelluloses from blue spruce (Picea pungens) and wheat (Triticum aestivum). When grown with [lignin-14C]lignocellulose from blue spruce, 15 of the Fusarium strains converted 2.2 to 4.3% of the [14C]lignin in 60 days to 14CO2 and 3.9 to 8.4% to labeled water-soluble products. When grown with unlabeled lignocellulose from wheat straw, the strains caused total weight losses in 60 days of 7 to 25%, acid-insoluble (Klason) lignin losses of 2 to 17%, and carbohydrate losses of 3 to 33%. Crude protein contents of degraded wheat-straw lignocellulose samples were 3.2 to 5.1%. Among the aromatic degradation products from wheat-straw lignocellulose degraded by different strains, as shown by gas chromatography, were p-coumaric acid, vanillic acid, vanillin, syringaldehyde, and p-hydroxybenzaldehyde.

scholarly journals Bud blight (Gemmamyces piceae) in the eastern part of the Krušné hory Mountains

2020 ◽  
Vol 66 (No. 8) ◽  
pp. 309-317
Author(s):  
Jiri Sefl ◽  
Veronika Mottlová ◽  
Iva Schořálková
Keyword(s):  
Life Cycle ◽  
Blue Spruce ◽  
Picea Pungens ◽  
Host Trees ◽  
Sprouting Ability ◽  
Trend Assessment ◽  
Krušné Hory Mountains

A survey was carried out in 2013–2019 on the life cycle of the bud blight Gemmamyces piceae (Borthw.) Casagrande and the trend assessment in the infestation of the Colorado blue spruce Picea pungens Engelm. stands. Four ecologically different plots were chosen in the Fláje region in the Eastern part of the Krušné hory Mountains. The pycnidia were formed at the beginning of June on buds infested the previous year. Later, in the second half of June, they formed on the spring attack buds. Conidia occurred in the first week of July on the buds of the old infestation, or later in the case of the spring attack buds, in the middle of July. The production of conidia lasted till the end of September. Ascospores occurred in the middle of July and were produced until the end of September. The ability of host trees to sprout became continually weaker, along with the defoliation progress. A distinct decline in the sprouting ability was noticed on stands with a dense crown canopy and on stands with competition of broad-leaved trees – with an admixture of birch.

scholarly journals First record of Dendroctonus micans (Kugelann, 1794) on non-native spruces in Slovakia – short communication

2016 ◽  
Vol 52 (No. 4) ◽  
pp. 277-282
Author(s):  
Vakula Jozef ◽  
Zúbrik Milan ◽  
Galko Juraj ◽  
Gubka Andrej ◽  
Kunca Andrej ◽  
...  
Keyword(s):  
Central Europe ◽  
Bark Beetle ◽  
Urban Areas ◽  
Short Communication ◽  
First Record ◽  
Dendroctonus Micans ◽  
Coniferous Trees ◽  
Picea Pungens ◽  
Spruce Bark ◽  
Rhizophagus Grandis

In 2015, we recorded the first attack of the great spruce bark beetle, Dendroctonus micans (Kugelann) (Coleoptera: Curculionidae, Scolytinae) on non-native Picea orientalis (L.) and Picea pungens (Engelmann) in Slovakia. To our knowledge, the occurrence of D. micans on P. orientalis in Central Europe has not been described yet. We found that D. micans preferred P. orientalis over P. pungens and other coniferous trees in urban areas. In laboratory conditions, 352 adults of D. micans emerged and only 1 predator, Rhizophagus grandis (Gyllenhal) (Coleoptera: Monotomidae), was recorded. D. micans has a potential to become a serious pest of P. orientalis and P. pungens in urban, and in air-polluted areas.

scholarly journals Dothistroma needle blight Mycosphaerella pini E. Rostrup, a new quarantine pathogen of pines in the CR

2012 ◽  
Vol 50 (No. 7) ◽  
pp. 319-326 ◽  
Author(s):  
L. Jankovský ◽  
M. Bednářová ◽  
D. Palovčíková
Keyword(s):  
Czech Republic ◽  
Host Species ◽  
Pinus Nigra ◽  
Climatic Conditions ◽  
The Czech Republic ◽  
Picea Pungens ◽  
Quarantine Pathogen ◽  
Dothistroma Needle Blight ◽  
First Time ◽  
Needle Blight

Dothistroma needle blight caused by Mycosphaerella pini E. Rostrup was observed for the first time in the Czech Republic on an imported Pinus nigra Arnold in 1999. In 2000, it was also found in the open planting. During three years, it became an important pathogen of pines in the Czech Republic. Its occurrence was noticed in more than 50 localities, above all in the region of Moravia and Silesia and eastern Bohemia. In total, it was found on 10 species of pine (P. nigra Arnold, P.&nbsp;banksiana Lamb., <br />P. contorta Loudon, P. mugo Turra, P.&nbsp;leucodermis Ant., P. sylvestris L., P. cembra L., P. aristata Engelm., P.&nbsp;ponderosa P. et C.&nbsp;Lawson and P. jeffreyi Grev. et Balf.). Also Picea pungens &nbsp;Engelm. was noticed as a host species. In the Czech Republic, Pinus nigra is the most frequent host species of M. pini (80% localities) followed by Pinus mugo (27% localities). On Scots pine P. sylvestris, M. pini was noticed at two localities. The critical period for infection is in the Czech Republic from the second half of May until the end of June. The incubation period lasts about 2&ndash;4 months depending on climatic conditions. The first symptoms on the needles infected in the current year appear in August being clearly expressed from September to November.In the CR, Dothistroma needle blight spread probably with infected planting stock obtained from import at the end of the 80s and at the beginning of the 90s.

The role of reactive oxygen species in pollen germination in Picea pungens (blue spruce)

2018 ◽  
Vol 31 (4) ◽  
pp. 357-365 ◽  
Author(s):  
Nikita Maksimov ◽  
Anastasia Evmenyeva ◽  
Maria Breygina ◽  
Igor Yermakov
Keyword(s):  
Reactive Oxygen Species ◽  
Pollen Germination ◽  
Reactive Oxygen ◽  
Oxygen Species ◽  
Blue Spruce ◽  
Picea Pungens

ALBINISM AND NATURAL SELFING IN Picea pungens

1983 ◽  
Vol 63 (4) ◽  
pp. 1097-1098
Author(s):  
W. H. CRAM
Keyword(s):  
Key Words ◽  
Recessive Gene ◽  
Blue Spruce ◽  
Picea Pungens ◽  
Self Pollination

Albino seedlings from self-pollinated seed were attributed to a simple and lethal recessive gene, which was utilized to estimate the occurrence of 0–18% natural self-pollination in blue spruce (Picea pungens Engelm.).Key words: Albinism, natural selfing, Picea pungens

A new hybrid between blue spruce and white spruce

1969 ◽  
Vol 47 (11) ◽  
pp. 1693-1700 ◽  
Author(s):  
James W. Hanover ◽  
Ronald C. Wilkinson
Keyword(s):  
Picea Glauca ◽  
Interspecific Hybrids ◽  
Growth Form ◽  
Female Parent ◽  
White Spruce ◽  
Early Growth ◽  
Hybrid Seed ◽  
Blue Spruce ◽  
Picea Pungens ◽  
Biochemical Analyses

Controlled pollinations were made within and between blue spruce (Picea pungens Engelm.) and white spruce (Picea glauca (Moench) Voss) in 1967 and 1968. Interspecific hybrids were obtained and verified by comparative measurements of several traits. The cross was successful when either species was used as the female parent. Hybrid seed germinated more rapidly than that of either species and hybrid seedlings showed some heterosis for early growth. Also, hybrid seedlings had needles intermediate between, and significantly different from, the parental seedlings. Growth form of the hybrid was quite variable compared with that of either species. Further evidence for the successful crossing of blue spruce and white spruce was provided by biochemical analyses of monoterpene compounds in the parents and progeny.

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