松属
- 网络pinus;Pinus L
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松属花粉的显微结构观察&对白皮松分类位置的探讨
Observation on the microstructure of the pollen grains of pinus & discussion for the taxonomy position of P NUS bungeana
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研究表明,只有当松属花粉百分比高于30%时,当地才可能有松树存在。
The study implies that Pinus pollen percentages are more than 30 % where pine trees exist in the surrounding vegetation .
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中国松属(Pinus)植物花粉的利用研究
The Study on Utilization of Pollens of Pinus in China
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三种松属(Pinus)植物的核型研究
Study of karyotypes of 3 species of Pinus
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中国松属(Pinus)中的一些植物是组成我国大面积针叶林的重要树种,其花粉资源异常丰富。
Some plants belonging to Pinus are important species which formed large area conifer forest in China and the pollens resources is very rich .
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松属植物rRNA基因的变异模式及其进化生物学意义
Variation Patterns of rRNA Genes in Pinus ( Pinaceae ) and Their Evolutionary Implications for Genome Structure , Gene Evolution , and Speciation Inferences
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本文将国产松属(Pinus)23种4变种4变型的针叶,进行了横切面及表皮结构的比较观察与描述,并综合列成检索表,以便从针叶解剖结构上来鉴别松属各种。
The comparative anatomy of the leaves of 23 species , 4 varieties and 4 forms of the genus Pinus has been investigated with special reference to their transverse sections and epidermal structures .
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松属植物(93种、变种)的核型全由中部或和近中着丝粒染色体构成,为1A类型。
The karyotypes of the genus Pinus ( 93 species and varieties ) are all composed of metacentric or / and submetacentric chromosomes and belonging to 1A type .
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现在全世界大约有18700万hm2的人工林,松属和桉属树种仍然是人工林中最普遍种植的树种,国外林业先进国家只用了1.2%~16%的人工林面积比重取得了60%~93%比率工业林产品。
There is 187 million ha planted forest in the world , pine and eucalyptus are the main species in plantation . Some foreign countries have gained 60 % ~ 93 % industrial product from 1.2 % ~ 16 % plantation area .
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松材线虫萎蔫病是由松材线虫[Bursaphelenchusxylophilus(Steiner&Buhoror)Nickle]引起的松属树种上一种毁灭性的病害,目前对该病的致病机理尚不十分清楚。
Pine wilt disease caused by pine wood nematode [ Bursaphelenchus xylophilus ( Steiner & Buhrer ) Nickle ] is a ruinous disease for pine , but the pathogenesis has not been quite clear so far .
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孢粉分析的结果表明,OIS1和OIS三阶段松属花粉含量占优势,平均含量达65%以上,而OIS2阶段松属百分含量明显降低,草本植物花粉含量增加,超过50%。
Pollen analysis shows that Pinus was predominated during the OIS 1 and OIS 3 with an average percentage 65 % , but it decreased at OIS 2 , giving place to the herbs which attained more than 50 % in average .
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松属细胞学分类和系统演化初探
A Preliminary Study on Cytology Taxonomy and System Evolution of Pine
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模糊聚类在松属种间生理差异中的应用
Interspecific variation in physiology of conifer and analysis by fuzzy cluster
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云南上新世杜鹃属和松属化石木研究及其古气候意义
Pliocene Rhododendron and Pinus fossil woods of Yunnan Province and Palaeoclimate
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松属51个种间的核型进化初探
Preliminary Research into the Karyotype Evolution among 51 Species of Genus Pinus
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中国松属木材管胞疣状层的电镜观察
Electron microscopic investigations on the warty layers in genus Pinus of China
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松属树种生长量和产脂力的比较分析
The volume and gum yield ability comparison of pine species
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松属素的均匀优化设计法合成研究
Optimizing synthetic method of pinocembrin by uniform experiment design
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松属8个树种的引种研究
Study on the Introduce of Eight Pinus species
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中国东北松属植物叶中挥发油的气-质谱分析
GC-MS Analysis of the Essential Oils in the Needles of Pine in Northeast China
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松属的起源、演化及扩散
Origin , Phylogeny and Spreading of Pinus
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松属植物松针化学成分的研究
Studies on chemical component of pine needles
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马尾松毛虫及其寄主松属植物的地史初步考证
The preliminary study on geohistory of Dendrolimus punctatus and its host plants , Pinus spp
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Ⅳ带是以松属桦属蒙古栎蒿属苔草属为主组合带。
Zone ⅳ: Pinus-Betula - Quercus Mongolica-Artemisia-Carex .
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目的合成松属素及其衍生物,研究其抗菌活性。
Aim To synthesize pinocembrin and its derivatives , and to study their antimicrobial activity .
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比较遗传作图显示松属树种具有高度的遗传保守性;
COMPARE High level of genetic conservative in pine species has been revealed with comparative mapping .
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河北省适合于松材线虫病的寄主主要是松属的一些树种;
The host plants for pine wood nematodiasis in Hebei province mainly are some pine species .
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广西松属10种木材纤维(管胞)的测定
Determination of the size of wood fibre ( tracheid ) from 10 species of Pinus in Guangxi
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各种松属树木木料,直纹、耐用,通常含树脂,白色到黄色。
Straight-grained durable and often resinous white to yellowish timber of any of numerous trees of the genus pinus .
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鸡公山松属针叶皮下层及树脂道的比较解剖观察
The comparative anatomy & observations for the hypodermic and the resin duct of needleshaped leaf of Pinus in Jigong Mountain