Results 191 to 200 of about 3,081 (222)
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Three New Terpenoids from Pinus yunnanensis
Helvetica Chimica Acta, 2010AbstractA new abietatrienoid, 15‐methoxydidehydroabietic acid (1), a new ring B‐seco abietatrienoid, 10‐hydroxy‐9,10‐secoabieta‐8,11,13‐trien‐18‐oic acid (2), and a new tetracyclic triterpenoid, pinusyunnanol (3), together with five known compounds, were obtained from the twigs and needles of Pinus yunnanensis.
Bin Wang +4 more
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ChemInform Abstract: Abietane Diterpenoids and a Lignan from Pinus yunnanensis.
ChemInform, 2010AbstractTwo new abietane diterpene acids, pinyunins A (I) and B (II), and the lignan (III) are isolated along with eight known diterpenoids.
Tao Feng +3 more
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Influence of slope on root system anchorage of Pinus yunnanensis
Ecological Engineering, 2008Abstract In southwestern China, Yunnan pines (Pinus yunnanensis) have been extensively cultivated on barren hills for reforestation and ecological engineering. The objective of this work is to study the influences of slope gradient on anchorage of root systems of P. yunnanensis.
Hai-Long Sun +5 more
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Seven diterpenoids from the resin of Pinus yunnanensis Franch and their anti-inflammatory activity
Fitoterapia, 2023Phytochemical investigation of the 95% ethanol extract from Pinus yunnanensis Franch resin induced the isolation of six previously unreported diterpenoids pinuyunnanacids K - N, P - Q, a nor-diterpenoid with a novel skeleton pinuyunnanacid O and six known analogues.
Yu-Fei, Liu +7 more
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Carbohydrate Research, 2012
Fractionation of hemicelluloses from delignified Pinus yunnanensis was carried out with KOH/H(3)BO(3) solution followed by graded precipitation in 15%, 60%, and 90% (v/v) ethanol solutions, respectively. Chemical compositions, physicochemical properties, and structures of the precipitated hemicellulosic fractions were elucidated by a combination of ...
Bai-Liang, Xue +3 more
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Fractionation of hemicelluloses from delignified Pinus yunnanensis was carried out with KOH/H(3)BO(3) solution followed by graded precipitation in 15%, 60%, and 90% (v/v) ethanol solutions, respectively. Chemical compositions, physicochemical properties, and structures of the precipitated hemicellulosic fractions were elucidated by a combination of ...
Bai-Liang, Xue +3 more
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Nematology, 2007
Abstract Bursaphelenchus uncispicularis n. sp. is described and figured. The nematode was found in wilted pine Pinus yunnanensis Franchet from a single locality in Longling county, Yunnan Province, China. The new species is characterised by a relatively small stylet (11-15 μm long) with weakly developed basal ...
Kan Zhuo +4 more
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Abstract Bursaphelenchus uncispicularis n. sp. is described and figured. The nematode was found in wilted pine Pinus yunnanensis Franchet from a single locality in Longling county, Yunnan Province, China. The new species is characterised by a relatively small stylet (11-15 μm long) with weakly developed basal ...
Kan Zhuo +4 more
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Genetic structure of needle morphological and anatomical traits of Pinus yunnanensis
Journal of Forestry Research, 2015Pinus yunnanensis Franch. is an particular conifer tree species in Yunnan–Guizhou plateau in southwest China. The morphological and anatomical traits of needles are important to evaluate geographic variation and population dynamics of conifer species. Seedlings from seven populations of P.
Yujie Huang +6 more
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Flora, 2021
Abstract Provenance selection plays a major role for the afforestation success, resilience and persistence of forests into the future. Understanding the germination response to water potential and temperature among provenances is crucial for forest restoration initiatives. However, afforestation programs often neglect the seed germination traits from
Chengjie Gao +5 more
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Abstract Provenance selection plays a major role for the afforestation success, resilience and persistence of forests into the future. Understanding the germination response to water potential and temperature among provenances is crucial for forest restoration initiatives. However, afforestation programs often neglect the seed germination traits from
Chengjie Gao +5 more
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Journal of economic entomology, 2010
Tomicus yunnanensis Kirkendall and Faccoli (Coleoptera: Curculionidae: Scolytinae) is a newly described pine shoot beetle found in southwestern China. This beetle has affected >200,000 ha of Pinus yunnanensis (Franchet) forests over the past 30 yr. After maturation feeding in the shoots, adults attack the boles in December to produce a new generation ...
Hui, Liu +5 more
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Tomicus yunnanensis Kirkendall and Faccoli (Coleoptera: Curculionidae: Scolytinae) is a newly described pine shoot beetle found in southwestern China. This beetle has affected >200,000 ha of Pinus yunnanensis (Franchet) forests over the past 30 yr. After maturation feeding in the shoots, adults attack the boles in December to produce a new generation ...
Hui, Liu +5 more
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Prediction Model for Postfire Mortality of Pinus yunnanensis in Central Yunnan Province
2009 International Conference on Computer and Automation Engineering, 2009Prediction model for post-fire mortality based on fire resistance of Pinus yunnanensis and the information at damage trees after forest fire could provide theory basis for estimating damage of forest fire and designing schemes of vegetation restoration in burned area in short time after forest fire. Post-fire mortality and crown-fire characteristics of
Jia-gang Zhao +3 more
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