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Ectomycorrhizal fungal communities associated with Masson pine(pinus massoniana lamb.) and oak {Quercus fabric Hance.) growing in a Mn mine site

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Ectomycorrhizal fungal communities associated with Masson pi...

Branching and growth of plantings in fifth year of a seedling seed orchard of Masson pine (pinus massoniana lamb.)

2012年中国菌物学会学术年会

作者： Jian Huang~(1,3*),Kazuhide Nara~2,Chunlan Lian~3 (1 College of forest,Northwest A&F University,Shaanxi Province,Yangling,712100,China 2 Graduate School of Frontier Sciences,The University of Tokyo,5-1-5 Kashiwanoha,Kashiwa 277-8563,Japan 3 Asian Natural Environmental Science Center,The University of Tokyo,1-1-8 Midoricho, Nishitokyo,Tokyo 188-0002,Japan)

The ectomycorrhizal fungal(EMF) communities associated with Masson pine(pinus massoniana lamb.) and oak(Quercus fabric Hance.) were investigated in Xiangtan Mn mining area in Hunan Province,*** sampled trees were divided into three groups based on soil color:pine trees growing in yellow soil(normal soil type in the site,40 trees),pine trees in black soil(polluted with Mn mine wastes,40 trees) and oak trees in gray-black soil(32 trees).There were wide variations in N,P and metal concentrations in each type of *** Mn concentrations in the black rhizosphere soil was from 169.6 to 22,598.4 mg kg(mean value:4,034.5),66.6 to 17,000.0 mg kg(4,246.8) in oak rhizosphere soils,and 163.0 to 8,898.4 mg kg(2,019.8 mg kg) in yellow rhizosphere soils of pine,*** rates of Masson pine growing in black soils(39.1±34.4%) and oak trees(38.9±15.2%),being not significantly different from each other,were lower than that of pine in the yellow soil(54.6±18.7%).In total,53 EMF OTUs were identified at 97%similarity threshold,of which 48 were found in pine trees and 20 in oak *** to pine trees in the yellow soil,EMF richness of pine in the black soil and oak was lower than that of pine in the yellow soil,but no significant differences in diversity *** was abundant in pine root systems(38.0%relative abundance),but rare in oak ectomycorrhizal tips(3.6%relative abundance).Russulaceae,which was dominant on pine root systems in the yellow soil,became rare on pine in the black soil(2.8%) and absent in oak *** further determine the effect of Mn concentrations on the EMF composition,richness,and diversity,80 pine root samples were classified into 8 subgroups according to Mn concentrations in the rhizosphere *** analysis showed a significantly negative effect of soil Mn on EMF richness(Mn ***:R =-0.795,P = 0.018).Atheliaceae was abundant(>20%relative abundance) in seven subgroups with higher soil Mn concentrati

关键词： Ectomycorrhizal fungal community Manganese Mine wastelands pinus massoniana lamb. Quercus fabric Hance.

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Journal of Forestry Research 2002年第1期13卷 28-32,83页

作者：赖焕林王章荣江瑞荣南京林业大学森林资源与环境学院南京210037 福建省龙岩市林木种苗站福建364001

The features of branching and growth studied included height, diameter at breast height (DBH), total number of branches, annual height growth, annual branch elongation in the year of elongating, annual branch number for four consecutive years, diameter of branches of different ages, and diameter of stem where branch-whorl originates. For features of total growth and overall branching, no significant differences were found between families, except for DBH. For annual features, no significant differences were found in annual stem height growth, annual branch elongation in the year of elongation and diameter of branches. In the last four years, differences in number of branches were not significant in the first two years but were significant in the last two year; differences in stem diameter where branch-whorls grow were significant for the four consecutive years. Trend of annual growth and branching features of families can be divided into three types as increasing type, stable type and fluctuating type. Most of families have an increasing type with respect of annual height growth and annual branch elongation, while most families belong to a fluctuating type with annual branch number. The results indicated that in the fifth year after planted in seedling seed orchard, differences between families were mostly insignificant. This result may have two main explanations: one is the growth rhyme in early ages of Masson pine, the other one is the complex paternal components to form the open-pollinated families. Family selection seemed to be not useful based on the result. It is suggested to select some of families in the nursery instead of to use all the families when establishing seedling seed orchards with open-pollinated families from plus-trees.

关键词： pinus massoniana lamb. Branching Growth Seedling seed orchard

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Study on Antibacterial Effects of Extracts from pinus massoniana ***

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Asian Agricultural Research 2024年第10期16卷 32-37页

作者： Hongbing QI Haiyan LIAO Junxia SONG Life Sciences and Technology School Lingnan Normal UniversityZhanjiang 524048China School of Geographic Sciences Lingnan Normal UniversityZhanjiang 524048China

[Objectives]To study the antibacterial effects of extracts from pinus massoniana ***.[Methods]In this experiment,the components from pinus massoniana *** were extracted by systematic solvent extraction method,and the antibacterial activity against four common bacteria,Escherichia coli,Staphylococcus aureus,Bacillus subtilis,Aspergillus flavus and the antibacterial active component were examined for by punch method.[Results]Different solvent extraction rate was different,the rates of petroleum ether,chloroform,ethyl acetate,n-butanol,water extracts were 4.2%,16.7%,17.4%,21.1%,40.6%.All extracts showed inhibitory effect against test *** was observed that the inhibition of G+was stronger than G-,and the extracts had the best antibacterial activity to Staphylococcus aureus while the weakest to Aspergillus *** antibacterial activity of the components decreased in the order:ethyl acetate extract>n-butanol extract>chloroform extract>petroleum ether extract>aqueous *** extracts were stable under ultraviolet radiation(UV)light and long term *** antibacterial activity of the extracts was weaker with the increase of pH value when the pH value≤8.[Conclusions]It is inferred that the antibacterial components in the extract of pinus massoniana needles are widely distributed,and the components with medium polarity or above are the main antibacterial components.

关键词： pinus massoniana lamb. Pine needle extract Antibacterial activity

The essential oil components of Cinnamomum cassia: an analysis under different thinning models of plantation pinus massoniana

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Journal of Forestry Research 2016年第3期27卷 707-717页

作者： Dayan Tao Yuanfa Li Daodiao Lu Yehong Luo Sufang Yu Shaoming Ye College of Forestry Guangxi University

Thinning is an important activity employed in forest management. To date, studies have mainly focused on the effects of thinning on the growth of trees during the same thinning period. In this study, plantation pinus massoniana lamb. near maturity were thinned at varying intensities and an economically important species, Cinnamomum cassia Presl., was planted beneath the thinned canopy. The aim of the study was to explore the effects of the extent of thinning on the essential oil content and its components of C. cassia in different parts of the plant, as well as the economic feasibility of the P. *** management model. Thinning significantly reduced the oil yield in the bark and branches of C. cassia, but hardly impacted the oil yield from C. cassia leaves compared with pure C. cassia forest（CK）. Among the different thinning treatments, both light（T.4） and extensive（T.1）thinning reduced the oil yield of C. cassia bark and new branches. The concentrations of the main aldehydes differed in different parts of the plant and were affected by the extent of thinning. The influence on cinnamaldehyde in the bark was minor, but was much greater in the branches and leaves. Both the oil yield and content of cinnamaldehyde showed that moderate（T.3） thinning was more favorable than other thinning models. These results not only provide a potentially promising model for the transformation of low-yield artificial pure forests of P. massoniana in the future, but also offer a reference for the management of artificial mixed stands.

关键词： Thinning pinus massoniana lamb. Cinnamomum cassia Presl Essential oils Plantation

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生根剂和季节对马尾松嫩枝扦插生根率的影响

林业科技通讯 2021年第8期 36-39页

作者：王胤姚瑞玲陈振华杨春霞郭飞广西壮族自治区林业科学研究院南宁530002 广西国有派阳山林场广西宁明532500

以马尾松组培苗为采穗母株,开展了生根剂类型及浓度、插穗浸泡时间和扦插季节等因子对扦插生根效果影响的研究,为马尾松(pinus massoniana lamb.)优良种质的高效利用提供技术支持。结果表明:不同浓度IAA、IBA、NAA和ABT1生根剂对马尾松... 详细信息

以马尾松组培苗为采穗母株,开展了生根剂类型及浓度、插穗浸泡时间和扦插季节等因子对扦插生根效果影响的研究,为马尾松(pinus massoniana lamb.)优良种质的高效利用提供技术支持。结果表明:不同浓度IAA、IBA、NAA和ABT1生根剂对马尾松组培苗插穗生根有一定的促进作用,生根率为12.4%~20.7%,总体效果较差,同一生根剂不同浓度处理间差异不明显;自制生根剂扦插生根率随生根剂浓度增大先上升后下降,各浓度间差异显著,其中,以100 mg/L浓度扦插效果最好,生根率达到86.8%。插穗生根率随浸泡时间延长先上升后下降,不同浸泡时长间生根率差异显著,其中,以浸泡4 h效果最好,生根率达到82.1%,与快蘸相比提高了191.1%。不同季节扦插生根率和生根时间差异明显,平均生根率以秋季最高(97.1%),春季次之(81.1%),夏季最低(32.3%);平均生根时间在春季、夏季、秋季和冬季分别为35、29、47、62 d。实际育苗生产中,可根据马尾松组培苗插穗生根特点,选择在夏季和冬季进行母株管护和更新,以提高生产效率。

关键词：马尾松 pinus massoniana lamb. 组培苗生根剂季节嫩枝扦插生根率

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