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玉米自交系与杂交种苗期根和叶的相关关系分析

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山西农业科学 2020年第1期48卷 5-8页

作者：郑向阳李会霞田岗刘鑫王国平山西省农业科学院谷子研究所

为探索玉米苗期根与叶的相关关系以及自交系的根和叶与杂交种的根和叶的相关关系,进行了玉米苗期栽培试验。结果表明,玉米自交系和杂交种,其苗期子叶的长和宽、第1叶的长和宽、第2叶的长和宽都与初生胚根的长呈正相关关系,其中,第1叶的... 详细信息

为探索玉米苗期根与叶的相关关系以及自交系的根和叶与杂交种的根和叶的相关关系,进行了玉米苗期栽培试验。结果表明,玉米自交系和杂交种,其苗期子叶的长和宽、第1叶的长和宽、第2叶的长和宽都与初生胚根的长呈正相关关系,其中,第1叶的长与初生胚根的长相关关系最显著;从自交系和杂交种苗期相对应的各个叶片的长和宽及根长的作图来看,各对应叶片之间的变化趋势是一致的,都为正相关关系;自交系与杂交种第1叶的长、第2叶的长和初生胚根的长的变化趋势基本重合。研究结果可为玉米育种时自交系和杂交种的苗期鉴定提供一种方法。

关键词：玉米自交系杂交种苗期根叶关系

Effects of organic mulching on soil aggregate stability and aggregate binding agents in an urban forest in Beijing, China

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Journal of Forestry Research 2022年第3期33卷 1083-1094页

作者： Wei Zhou xiangyang Sun Suyan Li Tiantian Du Yi zheng Zhihui Fan College of Forestry Beijing Forestry UniversityBeijing100083People’s Republic of China

Urban forest soil is often disturbed by rapid urbanization. Organic mulching is effective for improving soil quality and aggregate stability. This study evaluated how soil binding agents changed aggregate stability through organic mulching in urban forest soils. Three treatments were applied in Jiufeng National Forest Park, Beijing: (1) no organic mulch (control);(2) wood chips alone (5 cm thickness);and, (3) wood chips + wood compost (This mulch was divided into two layers, the upper layer of wood chips (2.5 cm), the lower layer wood compost (2.5 cm)). Soil samples were collected from the surface 10- cm soil layer and fraction into four aggregates. Glomalin-related soil protein and soil organic carbon were measured in bulk soil and the four aggregates. The results show that wood chips + wood compost increased the proportion of large and small macroaggregates, mean weight diameter and geometric mean diameter. The total and easily extractable glomalin-related soil protein were higher in the wood chips + wood compost. However, soil organic carbon was lower in the wood chips alone application compared to the controls and wood chips + wood compost. Easily extractable / total glomalin-related soil protein and glomalin-related soil protein / soil organic carbon ratios of wood chips alone and wood chips + wood compost had increased trend compared to the controls but did not reach significant levels (p > 0.05). Mean weight diameter and geometric mean diameter correlated positively with total and easily extractable glomalin-related soil protein but were not positively correlated with soil organic carbon, the ratios of easily extractable and total glomalin-related soil protein, and the ratios of glomalin-related soil protein and soil organic carbon. Redundancy analysis revealed that total glomalin-related soil protein was the most important driver for soil aggregate stability, especially the total glomalin-related soil protein of small macroaggregates. The results suggest tha

关键词： Organic mulching Soil aggregate stability Soil binding agents Glomalin-related soil protein(GRSP) Soil organic carbon(SOC)

A Reverse-Design Strategy for the Track Error of the Qi Tai Telescope Based on Pointing Accuracy

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Engineering 2022年第6期8卷 209-216页

作者： Na Li Baoyan Duan xiangyang Li Bin zheng Jiang Wu Key Laboratory of Electronic Equipment Structure Design Ministry of EducationXidian UniversityXi’an 710061China

The Qi Tai Telescope(QTT),which has a 110 m aperture,is planned to be the largest scale steerable tele-scope in the ***,the telescope’s repeated pointing accuracy error should be less than 2.5 arc seconds(arcsec);thus,the telescope structure must satisfy ultra-high precision *** this pur-suit,the present research envisages a reverse-design method for the track surface to reduce the difficulty of the telescope’s design and ***,the distribution characteristics of the test data for the track error were verified using the skewness coefficient and kurtosis coefficient *** to the distribution characteristics,the azimuth track error was simulated by a two-scale *** error of the long period and short amplitude was characterized as large-scale and described by a trigonometric function,while the short period and high amplitude error was characterized as small-scale and simulated by a fractal *** on the two-scale model,effect of the error on the pointing accuracy was ***,the relationship between the root mean square(RMS)of the track error and the RMS of the pointing accuracy error of the telescope was ***,the allowable RMS value of the track error was derived from the allowable pointing accuracy *** validate the effectiveness of the new design method,two typical radio telescopes(the Green Bank Telescope(GBT)and the Large Millimeter Telescope(LMT))were selected as experimental *** comparison,the theoretical calculated values of the pointing accuracy of the telescope were consistent with the measured values,with a maximum error of less than 10%.

关键词： Reverse design Track error Large radio telescope Two-scale model Pointing accuracy

Transcriptome Analysis of Auxin Drives Cone Size Regulation in Fokienia hodginsii

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Phyton-International Journal of Experimental Botany 2023年第6期92卷 1713-1723页

作者： Shunde Su Huan Chang xiangyang Kang Renhua zheng Beijing Advanced Innovation Center for Tree Breeding by Molecular Design National Engineering Laboratory for Tree BreedingKey Laboratory of Genetics and Breeding in Forest Trees and Ornamental PlantsMinistry of EducationCollege of Biological Sciences and TechnologyBeijing Forestry UniversityBeijing100083China Key Laboratory of Timber Forest Breeding and Cultivation for Mountainous Areas in Southern China Key Laboratory of Forest Culture and Forest Product Processing Utilization of Fujian ProvinceFuzhou350012China Basic Forestry and Proteomics Research Center College of ForestryFujian Provincial Key Laboratory of Haixia Applied Plant Systems BiologyFujian Agriculture and Forestry UniversityFuzhou350002China

As the reproductive organ of the endangered species Fokienia hodginsii,the size of the cones is a constraint on the reproductive renewal of the *** this study,the molecular basis of the influence of cone size on *** was elucidated by comparing the phenotype,biochemistry,and transcriptome of two cultivars of ***(‘FJ431’and‘FJ415’).The two cultivars differed significantly in cone size,with FJ431 having a significantly larger cone size and weight than FJ415,1.32 and 1.90 times that of FJ415,***-Seq analysis of both cultivars retrieved 75,940 genes whose approximate functions were classified as the pathway of response to endogenous stimulus and response to hormone and showed significant differences in the auxin-activated signaling pathway,particularly the MAPK signaling ***,the endogenous IAA content was significantly higher in FJ431 than in FJ415,and 1.58 and 1.29 times more IAA was present in immature and mature cones,***,exogenous IAA treatment significantly induced the expression of the MAPK pathway-related gene TRINITY_DN10564_c0_g1 and significantly inhibited the expression of the MAPK pathwayrelated gene TRINITY_DN17056_c0_*** work suggests that IAA can affect the cone size of ***,most probably through the MAPK *** has high theoretical and practical significance for the improvement of genetic breeding and the further cultivation of quality germplasm resources of ***.

关键词： Fokienia hodginsii cone size auxin MAPK

从2011年山西玉米区试结果谈中国的玉米区试制度

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中国农学通报 2013年第24期29卷 125-130页

作者：郑向阳栗建枝吴枝根赵太存韩雪芳山西省农业科学院谷子研究所山西长治046011

为了使玉米新品种在其最适合的区域尽快推广,从不同的角度只对参试品种增产或增产超过5%的试验点的产量进行考察的方法来分析2011年山西玉米区试结果。如中晚熟区(4200密度组),参试品种各个试验点的产量平均大于5%的比例为0,只统计参试... 详细信息

为了使玉米新品种在其最适合的区域尽快推广,从不同的角度只对参试品种增产或增产超过5%的试验点的产量进行考察的方法来分析2011年山西玉米区试结果。如中晚熟区(4200密度组),参试品种各个试验点的产量平均大于5%的比例为0,只统计参试品种大于对照5%试验点的产量其品种比例为100%。如中晚熟预备试验(3500密度组)来说,参试品种各个试验点的产量平均大于5%的比例为19.4%,用增产5%的点平均比例可达69.4%。结果表明,审定的品种数量要增多,但各个品种所能推广的区域将缩小,最终带来的是玉米产量的大幅度提高。这就得改变中国现在实行的玉米区试制度,为玉米新品种的推广提供新的思路。或者改变区试点产量的统计方式,或者可以借鉴国外的品种登记制度,实行品种登记制度和品种销售保证金制度同时进行的办法。这有利于鼓励和督促企业保证所销售的品种在生产上的丰产性和适应性,使中国的玉米产业良性发展。

关键词：玉米区试结果区试制度

Quantitative characterization of deep fault-karst carbonate reservoirs: A case study of the Yuejin block in the Tahe oilfield

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Energy Geoscience 2023年第3期4卷 63-70页

作者： xiangyang Hu Wenbo zheng Xiangyuan Zhao Bo Niu Petroleum Exploration and Production Research Institute of SINOPEC Beijing100083China

The Ordovician reservoirs in the Tahe oilfield are dominated by fractured-vuggy carbonate reservoirs, of which fault-karst reservoirs are a hot topic in recent years. Fault-karst reservoirs feature high production, large burial depth, and strong heterogeneity under the control of faulting and karstification. Based on geological, logging, and seismic data, this study classified the Ordovician fault-karst reservoirs in the Yuejin block of the Tahe oilfield into three types, namely karst-cave, dissolved-vug, and fractured types, and established the integrated identification criteria of the three types of reservoirs. This study characterized karst caves, dissolved vugs, and multi-scale faults through seismic wave impedance inversion and frequency-domain detection of multi-scale faults. 3D geological models of different types of reservoirs were built using the combined deterministic and stochastic methods and characterized the spatial distribution of multi-scale faults, karst caves, dissolved vugs, and physical property parameters of reservoir. This study established the method for the geological modeling of fault-karst reservoirs, achieved the quantitative characterization and revealed the heterogeneity of fault-karst reservoirs. The karst-cave and dissolved-vug types are high in porosity and act as reservoirs, while the fractured type is high in permeability and act as flow pathway. This study lays the foundation for the development index prediction, well emplacement, and efficient development of the fault-karst carbonate reservoirs.

关键词： Carbonate Fault-karst reservoir Quantitative reservoir characterizati on Yuejin block Tahe oilfield

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食管乳头状瘤35例临床病理分析

温州医学院学报 2013年第6期43卷 397-399页

作者：林克荣林朗黄兆浪郑向阳丁振计苍南县人民医院病理科浙江温州325800 苍南县人民医院消化内科浙江温州325800 苍南县人民医院胃镜室浙江温州325800

目的:探讨食管乳头状瘤的临床、内镜和病理特点。方法:对35例食管乳头状瘤的病理、胃镜和临床资料进行回顾性总结分析。结果:食管乳头状瘤好发于食管中下段,共27例(占77.14%);临床多无特异症状;镜下鳞状上皮层次增加,其中20例见挖空细胞... 详细信息

目的:探讨食管乳头状瘤的临床、内镜和病理特点。方法:对35例食管乳头状瘤的病理、胃镜和临床资料进行回顾性总结分析。结果:食管乳头状瘤好发于食管中下段,共27例(占77.14%);临床多无特异症状;镜下鳞状上皮层次增加,其中20例见挖空细胞(占57.14%),2例见上皮轻度异型增生。结论:黏膜慢性炎症在食管乳头状瘤的发病中起一定作用;食管乳头状瘤的发生与人类乳头瘤病毒(HPV)感染可能有一定的关系。

关键词：食管肿瘤人类乳头瘤病毒感染病理

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空气负离子对豚鼠噪声性听力损失的保护作用

中华航海医学杂志 1995年第4期2卷 7-10页

作者：陶关林郑向阳肖建平阮芳铭高文元第二军医大学海军卫生学教研

目的：探索预防性吸入空气负离子对噪声性听力损失的保护作用和听力恢复规律。方法：选用听力正常豚鼠６３只耳，随机分为三个组，分别预先吸入空气负离子（浓度为０．９６ｘ１０６～１．０７ｘ１０６／ｃｍ３２ｈ／ｄｘ１１～１３）然... 详细信息

目的：探索预防性吸入空气负离子对噪声性听力损失的保护作用和听力恢复规律。方法：选用听力正常豚鼠６３只耳，随机分为三个组，分别预先吸入空气负离子（浓度为０．９６ｘ１０６～１．０７ｘ１０６／ｃｍ３２ｈ／ｄｘ１１～１３）然后给与三种不同白噪声暴露（１１５ｄＢＳＰＬ０．５ｈ，１１５ｄＢＳＰＬ１ｈ及１１８ｄＢＳＰＬ１ｈ），并动态测定噪声暴露后８、２４、４８、７２、９６小时与８、２１、３１、４５天豚鼠的皮层听阈。结果：预防性吸入空气负离子具有减轻噪声件听力损失、促进听力恢复的作用；尤其对强噪声暴露（１１８ｄＢＳＰＬ１ｈ）所产生的听力损伤，吸与不吸空气负离子两组之间有非常显著的差异（Ｐ＜０．０１），吸空气负离子组豚鼠的听力大部分为暂时性阈移（ＴＴＳ），而不吸空气负离子的对照组则留有１８．２ｄＢ不可恢复的永久性阈移（ＰＴＳ）。结论：预先吸入空气负离子对噪声性听力损失有明显的保护效果，实验结果为进一步研究其保护作用及机理提供了理论依据和新途径。

关键词：空气负离子听阈噪声听力损失

谷子高度雄性不育系高51A的选育与应用研究

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中国种业 2023年第11期 130-132页

作者：李会霞田岗刘鑫刘红王振华郑向阳山西农业大学谷子研究所长治046000

谷子不育系选育是谷子利用杂种优势的关键环节,不育系性状对杂交种的影响很大。详细阐述了谷子高度雄性不育系高51A的选育方法与选育过程,其配合力高,抗病性好,用其组配并鉴选的强优势杂交种长杂谷333表现优良,丰产性好,抗病性强;提出了... 详细信息

谷子不育系选育是谷子利用杂种优势的关键环节,不育系性状对杂交种的影响很大。详细阐述了谷子高度雄性不育系高51A的选育方法与选育过程,其配合力高,抗病性好,用其组配并鉴选的强优势杂交种长杂谷333表现优良,丰产性好,抗病性强;提出了高51A的改良方向,为谷子不育系的选育与应用提供参考。

关键词：谷子不育系高51A 杂交种

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