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Horticultural Plant Journal 2024年第3期10卷 657-671页

作者： Yinghao Liu Can Wang Ran Chen Weitao Jiang Yun Li Chengmiao Yin Yanfang Wang zhiquan mao College of Chemistry and Material Science Shandong Agricultural UniversityTaianShandong 271018China State Key Laboratory of Crop Biology/College of Horticultural Science and Engineering Shandong Agricultural UniversityTaianShandong 271018China

Apple replant disease(ARD)negatively affects plant growth and reduces yields in replanted *** this study,biochar was applied to apple replant soil with Fusarium *** aim was to investigate whether biochar could promote plant growth and alleviate apple replant disease by reducing the growth of harmful soil microorganisms,changing soil microbial community structure and improving the soil *** experiment included five treatments:apple replant soil(CK),methyl bromide fumigation apple replant soil(FM),replant soil with biochar addition(2%),replant soil with *** spore solution(8×10^(7)spores·mL^(-1)),and replant soil with biochar and *** spore solution *** biomass,the activity of antioxidant enzymes in the leaves and roots,and soil environmental variables were *** community composition and community structure were analyzed using 16SrDNA and ITS2 gene *** significantly reduced the abundance of *** and increased soil microbial diversity and *** also increased the soil enzyme activities(urease,invertase,neutral phosphatase,and catalase),the biomass(plant height,fresh weight,dry weight)and the activity of antioxidant enzymes(superoxide dismutase,peroxidase,and catalase).The root indexes of apple seedlings was also increased in replant soil by *** sum,biochar promoted the growth of plants,improved the replant soil environment,and alleviated apple replant disease.

关键词： Biochar Fusarium oxysporum Apple replant disease Soil environment

Integration of root architecture,root nitrogen metabolism,and photosynthesis of‘Hanfu’apple trees under the cross-talk between glucose and IAA

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Horticultural Plant Journal 2023年第4期9卷 631-644页

作者： Bianbin Qi Xin Zhang zhiquan mao Sijun Qin Deguo Lv College of Horticulture Shenyang Agricultural UniversityShenyangLiaoning 110866China College of Horticultural Science and Engineering Shandong Agricultural UniversityTaianShandong 271018China

Sugars and auxin have important effects on almost all phases of plant life cycle,which are so fundamental to plants and regulate similar ***,little is known about the effect of cross-talk between glucose and indole-3-acetic acid(IAA)on growth and development of apple *** examine the potential roles of glucose and IAA in root architecture,root nitrogen(N)metabolism and photosynthetic capacity in‘Hanfu’(Malus domestica),a total of five treatments was established:single application of glucose,IAA,and auxin polar transport inhibitor(2,3,5-triiodobenzoic acid,TIBA),combined application of glucose with TIBA and that of glucose with *** combined application of glucose with IAA improved root topology system and endogenous IAA content by altering the mRNA levels of several genes involved in root growth,auxin transport and ***,the increased N metabolism enzyme activities and levels of genes expression related to N in roots may suggest higher rates of transformation of nitrate(NO3--N)into amino acids application of glucose and ***,single application of TIBA decreased the expression levels of auxin transport gene,hindered root growth and decreased endogenous IAA *** combined with TIBA application effectively attenuated TIBA-induced reductions in root topology structure,photosynthesis and N metabolism activity,and mRNA expression levels involved in auxin biosynthesis and *** together,glucose application probably changes the expression level of auxin synthesis and transport genes,and induce the allocation of endogenous IAA in root,and thus improves root architecture and N metabolism of root in soil with deficit carbon.

关键词： Malus Cross-talk between glucose and IAA Root morphology Nitrogen metabolism Photosynthesis

The effects of crop rotation combinations on the soil quality of old apple orchard

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Horticultural Plant Journal 2022年第1期8卷 1-10页

作者： Haiyan Wang Yuefan Sheng Weitao Jiang Fengbing Pan Mei Wang Xuesen Chen Xiang Shen Chengmiao Yin zhiquan mao College of Horticultural Science and Engineering/State Key Laboratory of Crop Biology Shandong Agricultural UniversityTai’anShandong 271018China

This study investigated the effects of six crop rotation combinations on the soil quality of old apple orchard and seedling growth of Malus hupehensis Rehd.(apple rootstock) under pot conditions. The inhibitory effects of crops such as Allium fistulosum, Brassica juncea, and Triticum aestivum on four species of Fusarium were observed and compared in six treatments. These were continuous cropping(CK), fumigation with the methyl bromide(FM), rotating A. fistulosum only(R1), rotating A. fistulosum and T. aestivum(R2), rotating A. fistulosum, B. juncea, and T. aestivum(R3), and fallow(FC) in a year. The results showed that the biomass of Malus hupehensis Rehd. seedlings increased significantly. The root length increased and the root architecture was optimized. The respiration rate of the root system was increased by about 1 time after rotation. The treatments of R1, R2, R3, and FC increased bacterial count by 232.17%, 96.04%, 316.21%, and 60.02%, respectively. However, the fungi were reduced in varying degrees and bacteria/fungi ratio was increased by 5–10 times. The enzyme activities, p H, and organic matter were increased, but soil bulk density was decreased. Phenolic acids such as phloridzin was decreased significantly. The copy number of four Fusarium species declined by 85.59%, 74.94%, 69.68%, and 54.41% after rotating three different crops(R3 treatment). The root volatiles of three plants inhibited mycelial growth and spore germination of four Fusarium species.

关键词： Apple replant disease Rotation Malus hupehensis Rehd Seedlings Soil quality Microorganism

Isolation of phloridzin-degrading,IAA-producing bacterium Ochrobactrum haematophilum and its effects on the apple replant soil environment

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Horticultural Plant Journal 2023年第2期9卷 199-208页

作者： Weitao Jiang Ran Chen Lei Zhao Yanan Duan Haiyan Wang Zhubing Yan Xiang Shen Xuesen Chen Chengmiao Yin zhiquan mao State Key Laboratory of Crop Biology College of Horticulture Science and EngineeringShandong Agricultural UniversityTai'anShandongChina

We isolated and identified a bacterium that could produce IAA and degrade phloridzin in the rhizosphere soil of healthy replanted apple(the rootstock is M9T337 and the scion is Yanfu 3),providing a theoretical basis for reducing the obstacles associated with apple replant disease(ARD).Isolates were screened using Salkowski colorimetry and screening medium for *** isolate of interest(W6)was identified as Ochrobactrum haematophilum based on morphological analysis,physiological and biochemical tests,and 16S rDNA *** a laboratory experiment,W6 produced auxin and promoted the growth of Arabidopsis thaliana roots,and its degradation rate of 100 mg.L^(-1 )phloridzin was 62.0%.In a pot experiment,W6 significantly reduced the phenolic acid contents of replanted soil,lowered the abundance of the harmful fungus Fusarium solani,and increased soil enzyme activities,thereby improving the micro-ecological environment of replant soil.W6 increased the root antioxidant enzyme activity and leaf photosynthetic pigment content of replanted Malus hupehensis ***,effectively alleviating the decrease in net photosynthetic rate,transpiration rate and stomatal conductance caused by *** a field experiment,W6 also promoted the growth of replanted apple(the rootstock is M9T337 and the scion is Yanfu 3)***,W6 can promote apple growth and degrade phenolic acids,and it can be used as an effective treatment for the reduction of ARD.

关键词： Malus hupehensis Rehd. Apple Apple replant disease Ochrobactrum haematophilum Phloridzin Rhizosphere soil

中国重要落叶果树果实品质和熟期育种研究进展

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园艺学报 2024年第1期51卷 8-26页

作者：陈学森王楠彭福田毛志泉尹承苗姜远茂葛顺峰胡大刚李媛媛杜远鹏姚玉新张宗营山东农业大学园艺科学与工程学院国家苹果工程技术研究中心山东省苹果技术创新中心山东泰安271018

中国栽培面积66.67万hm^(2)以上的落叶果树有苹果、梨、桃和葡萄4种,针对这些重要果树果实品质和熟期,国内几代遗传育种工作者经过几十年的协同创新和联合攻关,在优异种质评价挖掘与创制的基础上,创建了优质高效育种技术体系,育成了优... 详细信息

中国栽培面积66.67万hm^(2)以上的落叶果树有苹果、梨、桃和葡萄4种,针对这些重要果树果实品质和熟期,国内几代遗传育种工作者经过几十年的协同创新和联合攻关,在优异种质评价挖掘与创制的基础上,创建了优质高效育种技术体系,育成了优质、耐贮、不同熟期、特色多样的苹果和梨系列优质新品种,育成了桃和葡萄早、中、晚熟期配套优质新品种;研发了新品种优质高效配套栽培技术体系,推动了自主研发新品种的大面积推广应用及产业优质高效发展,为保障优质水果的周年需求提供了重要支撑。

关键词：落叶果树苹果梨桃葡萄品质熟期配套耐贮

Simulation and evaluation study of atmospheric aerosol nonsphericity as a function of particle size

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Particuology 2024年第7期90卷 281-291页

作者： Qianjun mao Xin Nie School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China College of New Energy and Materials Northeast Petroleum UniversityDaqing163318China

Aerosol nonsphericity causes great uncertainty in radiative forcing assessments and climate *** considerable studies have attempted to quantify this uncertainty,the relationship between aerosol nonsphericity and particle size is usually not considered,thus reducing the accuracy of the *** this study,a coupled inversion algorithm combining an improved stochastic particle swarm optimization algorithm and angular light scattering is used for the nonparametric estimation of aerosol nonsphericity variation with particle size,and the optimal sample selection method is employed to screen the *** on the verification of inversion accuracy,the variation of aerosol aspect ratio with particle size based on the ellipsoidal model in global regions has been obtained from Aerosol Robotic Network(AERONET)data,and the effect of nonsphericity on radiative forcing and dry deposition has been *** results show that the aspect ratio increases with particle size in all regions,with the maximum ranging from 1.4 to 1.8 in the desert,reflecting the differences in aerosol composition at different particle *** radiation calculations,considering aerosol nonsphericity makes the aerosol cooling effect weaker and surface radiative fluxes increase,but hardly changes the aerosol absorption,with maximum differences of 9.22%and 22.12%at the bottom and top of the atmosphere,***,the differences in radiative forcing between aspect ratios as a function of particle size and not varying with particle size are not significant,averaging less than 2%.Besides,the aspect ratio not varying with particle size underestimates the deposition velocity of small particles and overestimates that of large particles compared to that as a function of particle size,with maximum differences of 7%and 4%,respectively.

关键词： Aerosol nonsphericity Inversion Aspect ratio Radiative forcing Dry deposition velocity

Effects of Soil Texture on the Growth of Young Apple Trees and Soil Microbial Community Structure Under Replanted Conditions

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Horticultural Plant Journal 2020年第3期6卷 123-131页

作者： Yuefan Sheng Haiyan Wang MeiWang Hanhao Li Li Xiang Fengbing Pan Xuesen Chen Xiang Shen Chengmiao Yin zhiquan mao College of Horticultural Science and Engineering/State Key Laboratory of Crop Biology Shandong Agricultural UniversityTai’anShandong 271018China College of Resources and Environment Shandong Agricultural UniversityNational Engineering Laboratory for Efficient Utilization of Soil and Fertilizer ResourcesTai’anShandong 271018China

A two-year field experiment was carried out in order to study the occurrence degree and mechanism of apple replant disease(ARD)in the apple orchards with different soil *** we can adopt appropriate controlmeasures according to the severity of *** two-year-old seedlings with consistent growth were selected,of which the root stock was T337 and the scion was Yanfu *** were significant differences in biomass between methyl bromide fumigation and replanted treatments,and the difference was the largest in clay loam,followed by sandy loam,and loam,which verified ARD in clay loam was most serious,followed by sandy loam and *** on high-throughput sequencing of fungi in soil samples,fungal richness and diversity were the highest in clay loam,followed by sandy loam,and *** relative abundance of Fusarium in SX,SL,FX,FL,WX and WL was 7.33%,19.32%,2.70%,4.24%,10.71%and 23.87%,*** on Real-time quantitative analysis,there were significant differences in the number of Fusarium oxysporum and Fusarium solani between methyl bromide fumigation and replanted treatments,i.e.,clay loam>sandy loam>*** was the main pathogen causing *** shows that ARD is the most serious under replanted clay loam ***-throughput sequencing technology was used to prove the difference in Fusarium was one of the important reasons for ARD under different soil *** technology provides a new idea for the prevention and control of ARD.

关键词： Apple Apple replant disease Fungi community structure Soil texture High-throughput sequencing

Proof of Two Supercongruences of Truncated Hypergeometric Series_(4)F_(3)

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Acta Mathematica Sinica,English Series 2024年第4期40卷 1015-1028页

作者： Guo Shuai mao Department of Mathematics Nanjing University of Information Science and TechnologyNanjing 210044P.R.China

In this paper,we prove two supercongruences conjectured by Z.-*** via the Wilf-Zeilberger *** of them is,for any prime p>3,4F3[7/6 1/2 1/2 1/2 1/6 1 1]-1/8]-1/2≡p(-2/p)+p^(3)/4(2/p)Ep-3 (mod p^(4))where(·/p)stands f... 详细信息

关键词： Supercongruence truncated hypergeometric series Wilf–Zeilberger method Euler numbers Legendre symbol

Analysis of the Fungal Community in Apple Replanted Soil Around Bohai Gulf

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Horticultural Plant Journal 2018年第5期4卷 175-181页

作者： WANG Gongshuai YIN Chengmiao PAN Fengbing WANG Xiaobao XIANG Li WANG Yanfang WANG Jinzheng TIAN Changping CHEN Jie mao zhiquan State Key Laboratory of Crop Biology/College of Horticultural Science and Engineering Shandong Agricultural University College of Chemistry and Material Science Shandong Agricultural University Shandong Instiute of Pomology Yantai Academy of Agricultural & Science Garden Office of Linyi Lanshan

Apple replant disease(ARD) is a frequently occurring plant disease in replanted orchards around Bohai Gulf, which causes growth inhibition and even death of plants. The aim of this study was to investigate the etiology of ARD around Bohai Gulf. In this study, the primary growth inhibition of apple seedlings was evaluated in ten replanted soils, sampled around Bohai Gulf. A fungal clone library was used to identify changes in the structure and composition of the soil fungal community. The results revealed that the Simpson diversity indices of Laizhou and Pulandian orchards were higher than others, presenting severe ARD. Ascomycota dominated around Bohai Gulf at the phyla level. Fusarium and Saccharomyces were abundant in all replanted soils. In addition, correlations between the relative abundance of fungal genera in soils and the severity of ARD were analyzed. The results showed that Fusarium was correlated positively with the severity of ARD, but Mortierella was negatively correlated. Furthermore, the quantitative PCR of Fusarium oxysporum, which was regarded as a factor of ARD, was performed. Overall, this study demonstrated that ARD was strongly associated with an unbalanced microbial ecosystem with more pathogenic fungi, while Fusarium in the apple replanted soil was the key factor for ARD around Bohai Gulf.

关键词： apple replanted disease Fungi clone library fusarium fungal community

Heat Storage Performance of PCM in a Novel Vertical Pointer-Shaped Finned Latent Heat Tank

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Journal of Thermal Science 2024年第2期33卷 422-434页

作者： mao Qianjun ZHU Yuanyuan LI Tao School of Urban Construction Wuhan University of Science and TechnologyWuhan430065China

The heat storage performance of latent heat storage systems is not good due to the poor thermal conductivity of phase change *** this paper,a new type of pointer-shaped fins combining rectangular and triangular fins has been employed to numerically simulate the melting process in the heat storage tank,and the fin geometry parameter effects on heat storage performance have been *** results indicate that compared with the bare tube and the rectangular finned tank,the melting time of the phase change material in the pointer-shaped finned tank is reduced by 64.2%and 15.1%,*** closer the tip of the triangular fin is to the hot wall,the better the heat transfer *** optimal height of the triangular fin is about 8 *** the number of fins from 4 to 6 and from 6 to 8 reduces the melting time by 16.0%and 16.7%***,increasing the number of fins from 8 to 10 only reduces the melting time by 8.4%.When the fin dimensionless length is increased from 0.3 to 0.5 and from 0.5 to 0.7,the melting time is shortened by 17.5%and 13.0%.But the melting time is only reduced by 2.9%when the dimensionless fin length is increased from 0.7 to *** optimising the design of the thermal storage system,the results can provide a reference value.

关键词： thermal energy storage phase change material pointer-shaped fins heat storage performance