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Mating patterns and pollen dispersal in a Japanese larch(Larix kaempferi) clonal seed orchard： a case study

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Science China(Life Sciences) 2018年第9期61卷 1011-1023页

作者： Xingbin Chen Xiaomei Sun leiming dong Shougong Zhang State Key Laboratory of Tree Genetics and Breeding Chinese Academy of ForestryBeijing100091China Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration Research Institute of Forestry Chinese Academy of ForestryBeijing 100091China Jiangxi Provincial Key Lab for Plant Biotechnology Jiangxi Academy of ForestryBeijing 100091 China

Pollination dynamics highly determines the genetic quality of seed orchard crops. However, there is less research about the effect of mating patterns on seed productivity of orchard crops. So far, clonal seed orchards have been producing genetically improved seedlings used for most Japanese larch(Larix kaempferi(Lamb.) Carr.) plantations in China. In the present study, a total of 17 highly variable simple sequence repeat(SSR) markers were used for genotyping a progeny trial population consisting of 647 open-pollinated progenies germinated from seeds which were collected from 63 maternal clones with 140 potential paternal clones in a Japanese larch clonal seed orchard in China. Paternity analysis was used in the present case study in order to evaluate the level of paternal gametic contribution, estimate pollen contamination and selfing rates, and investigate pollination patterns,pollen dispersal patterns and the impact of mating patterns on seed productivity of orchard crops. We observed 93.7% of the success rate of the parental assignment, unequal paternal gametic contribution(0–12.4%) with 6.3% of the progenies derived from pollen contamination or unsampled pollen donors, and absence of evidence for selfing. We also found that pollination rate highly depended on the distance between pollen donors and maternal parents, the majority of the identified crossing(65.7%)occurred between clones within a 150-m radius, and large variations in growth performance existed among the paternal halfsiblings. Progeny growth performance(diameter at breast(DBH) and height(HGT)) was measured at Age-20 in order to investigate the impact of mating patterns on timber production of orchard crops. As either the paternal or maternal, two clones(i.e., clones Z38 and Z62) were identified to have produced progenies with higher average stem volume breeding values than that of all of the progenies. Specifically, the genetic gains for volume were 3.53% for the two clones as paternal parents, and 8

关键词： Larix kaempferi simple sequence repeats(SSRs) paternity analysis pollen contamination pollen dispersal growth performance

Early selection efficiency for fiber dimensions and their relationships with growth and wood quality for Pinus elliotth *** southern China

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Journal of Forestry Research 2023年第6期34卷 1951-1962页

作者： Jing Wen Min Yi leiming dong Lu Zhang Siyu Liu Shenggui Yuan Xiaoxiao Tao Meng Lai Key Laboratory of Silviculture College of ForestryJiangxi Agricultural UniversityNanchang 330045People’s Republic of China Beijing Floriculture Engineering Technology Research Centre Beijing Botanical GardenBeijing 100093People’s Republic of China

A solid understanding of the efficiency of early selection for fiber dimensions is a prerequisite for breeding slash pine(Pinus elliottii Engelm.)with improved properties for pulp and paper *** correlations between size of fibers,wood quality and growth properties are also *** accomplish effective early selection for size of fibers and evaluate the impact for wood quality traits and ring widths,core samples were collected from360 trees of 20 open-pollinated Pinus elliottii families from three genetic *** were measured by SilviScan,and the age trends for phenotypic values,heritability,early-late genetic correlations,and early selection efficiency for fiber dimensions,such as tangential and radial fiber widths,fiber wall thickness and fiber coarseness,and their correlations with microfibril angle(MFA),modulus of elasticity(MOE),wood density and ring width were *** phenotypic trends were found for tangential and radial fiber widths while fiber coarseness and wall thickness curves were *** trends of heritability based on area-weighted fiber dimensions were *** to moderate heritability from pith to bark(~0.5)was found for all fiber dimension across the three sites except for tangential fiber width and wall thickness at the Ganzhou ***-late genetic correlations were 0.9 after age of 9 years,and early selection for fiber dimensions could be effective due to strong genetic *** results showed moderate to strong positive genetic correlations for modulus of elasticity and density with fiber *** effects on fiber dimensions were weak or moderate when ring width or wood quality traits were selected *** of efficiency for early selection indicated that the optimal age for radial fiber width and fiber coarseness was 6-7 years,while for tangential fiber width and wall thickness was 9-10 years.

关键词： Pinus elliottii Early selection efficiency Genetic correlation Heritability Fiber dimensions

The Path to Common Prosperity:Rising Social Construction and Livelihood Expenditure

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Social Sciences in China 2022年第3期43卷 60-77页

作者： Jiao Changquan dong leiming 李存娜(译) School of Marxism Peking University School of Sociology Beijing Normal University the Journal Publishing Center of Renmin University of China

Since 2000,China has undergone a“golden age”of livelihood security construction similar to that of the Western industrialized countries in the 1960s to ***,China has built up the world's largest social security and housing support systems;the coverage of compulsory education has reached the average level of high-income countries;and the main health indicators are generally better than the average of middle-and highincome ***,China is nolongera“low-welfare”*** expenditure,with a share of GDP close to the level of developed countries around 1980,has become the principal part of public expenditure,and the central government is also playing an increasingly prominent role in ensuring people's *** is building a new livelihood security system with responsibility shared among multiple levels of government.

关键词： social construction livelihood expenditure great transformation central-local relations

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农村调解机制的语境化理解与区域比较研究

社会科学辑刊 2006年第1期 56-61页

作者：董磊明华中师范大学政治学研究院湖北武汉430079

对村庄纠纷调解机制的语境化理解和区域比较研究,需要结构化地理解各种村庄现象,形成对村庄的整体性认知,理解调解机制与其他村庄政治社会现象之间的关联;需要选择一个村庄的内生性因素作为视角和切入点,通过它串起不同区域的个案进行... 详细信息

对村庄纠纷调解机制的语境化理解和区域比较研究,需要结构化地理解各种村庄现象,形成对村庄的整体性认知,理解调解机制与其他村庄政治社会现象之间的关联;需要选择一个村庄的内生性因素作为视角和切入点,通过它串起不同区域的个案进行比较。由此既能加深对个案村庄的理解,又能发现调解机制的区域差异与共性。

关键词：村庄纠纷调解语境化区域比较研究

传统与嬗变——集体企业改制后的苏南农村村级治理

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社会学研究 2002年第1期16卷 10-16页

作者：董磊明江苏省委党校科社部

This paper attempts to construct an analysis model on inner integration of village. The author suggests that the inner integration of village consists of three main aspects: institution integration, economic integration and cultural integration. Based on field research on villages of south Jiangsu province, this paper analyses these villages’ inner integration by describing the configuration of power and elite structure. It discusses that the decollective reform of village’s collective works has radically changed the local power structure and inner integration of village. The paper also analyses the development of the inner integration of such villages.

关键词：集体企业改制苏南农村村级治理

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农村公共品供给中的内生性机制分析

中国农业大学学报（社会科学版） 2015年第5期32卷 69-75页

作者：董磊明北京师范大学社会学院

文章站在农村社区内部的视角,指出农村公共品的供需具有季节性、阶段性、临时性和分散性的特点。国家在可见的将来很难有足够的财政能力包揽下所有的农村公共品供给,农村公共品供给中的内生机制将发挥相当重要的作用,因此必须提升农村... 详细信息

文章站在农村社区内部的视角,指出农村公共品的供需具有季节性、阶段性、临时性和分散性的特点。国家在可见的将来很难有足够的财政能力包揽下所有的农村公共品供给,农村公共品供给中的内生机制将发挥相当重要的作用,因此必须提升农村公共品的内生型供给能力和村社承接外来供给的能力。切合农村实际的行政组织建设和社会建设,能有效地增强农村社会的整合、动员、合作能力,这是提升农村公共品供给内生性机制、提高公共品供给效率、促进公共品供需均衡的必由之路。

关键词：农村公共品内生型供给承接能力组织建设社会建设

新农村建设与村级治理体制改革的有机衔接——对赣南版石镇的调查

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开发研究 2007年第4期 76-80页

作者：董磊明华中科技大学中国乡村治理研究中心

新农村建设不是简单地"建新村",而是要以挖掘村庄潜在的资源进行基础设施建设为切入点,有效地进行组织建设和文化建设,并探索出适应具体实际的农村社区长效治理体制。赣南版石镇积极进行制度创新,打破小组设置,组建农村村落社区,变"乡... 详细信息

新农村建设不是简单地"建新村",而是要以挖掘村庄潜在的资源进行基础设施建设为切入点,有效地进行组织建设和文化建设,并探索出适应具体实际的农村社区长效治理体制。赣南版石镇积极进行制度创新,打破小组设置,组建农村村落社区,变"乡—村—组"乡村管理体制为"乡—村—村落社区"服务型乡村治理体制,将社会精英吸纳进治理体制;并通过各种渠道让理事会掌握一定量的公共资源,使之能保持长久的动力,村民对其形成较强的依赖。版石的经验不在于它具体的做法,而在于它针对具体实际,通过积极挖掘、培植农村潜在的社会资源进行组织建设和文化建设,将新农村建设与村级治理体制改革的有机衔接的理念。

关键词：治理体制改革资源社会精英权威新农村建设

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中国村社自主性与外部资源的内部化

学术月刊 2020年第6期52卷 71-83页

作者：董磊明邹松北京师范大学中国社会管理研究院/社会学院北京100875

项目下乡在向乡村注入大量资源的同时,极大地影响了基层治理生态。研究发现,项目运作过程中村社自主性与项目运作机制交互作用,产生了外部资源悬置、内部化、外部化、私人化、工具化等不同样态。在当前海量资源持续输入农村的背景下,须... 详细信息

项目下乡在向乡村注入大量资源的同时,极大地影响了基层治理生态。研究发现,项目运作过程中村社自主性与项目运作机制交互作用,产生了外部资源悬置、内部化、外部化、私人化、工具化等不同样态。在当前海量资源持续输入农村的背景下,须在充分考虑村庄接应能力的情况下选择适宜的运作机制,在提升村庄公共服务水平的基础上,促进村庄公共性的重建,改善基层治理。

关键词：项目制村社自主性运作机制外部资源内部化

迈向共同富裕之路:社会建设与民生支出的崛起

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中国社会科学 2022年第6期 139-160,207,208页

作者：焦长权董磊明北京大学马克思主义学院北京100871 北京师范大学社会学院北京100875

2000年以来,中国经历了一个与西方工业化国家20世纪60—80年代相似的民生保障建设的“黄金时代”。目前,中国建成了世界上规模最大的社会保障和住房保障体系,义务教育普及程度达到世界高收入国家平均水平,主要健康指标总体上优于中高收... 详细信息

2000年以来,中国经历了一个与西方工业化国家20世纪60—80年代相似的民生保障建设的“黄金时代”。目前,中国建成了世界上规模最大的社会保障和住房保障体系,义务教育普及程度达到世界高收入国家平均水平,主要健康指标总体上优于中高收入国家平均水平。中国已明显跨过了“低福利”国家的门槛,民生支出占GDP的比重已接近发达国家1980年左右的水平,成为公共支出的绝对主体。中央政府在民生保障方面发挥的作用也日益显著,中国正在构建一个多层级政府共同负责的新型民生保障体制。

关键词：社会建设民生支出大转型中央和地方关系