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Occurrence and Integrated Control of Psylla chinensis in Eastern Hebei Province

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Plant Diseases and Pests 2023年第1期14卷 14-16页

作者： Lijuan GAO Longfei LI Minghui JI Jintao XU baofeng hao Changli Institute of Pomology Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

The paper introduces the damage characteristics and occurrence regularity of Psylla chinensis in pear orchards in eastern Hebei Province,and summarizes the integrated prevention and control techniques of ***,in order ... 详细信息

关键词： Eastern Hebei Province Psylla chinensis Occurrence Control

Advances in Molecular Regulatory Mechanisms of Fruit Trees under Low Temperature Stress

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Plant Diseases and Pests 2024年第3期15卷 46-48页

作者： Huan LIU Lijuan GAO Minghui JI Longfei LI Jintao XU baofeng hao Changli Institute of Pomology Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

The most recent research findings on the tolerance of fruit trees to cold stress are reviewed from a molecular perspective,including the perception and transduction of low temperature calcium signaling,CBF-dependent molecular regulatory mechanisms,non-CBF-dependent molecular regulatory mechanisms,and so *** objective is to provide a reference basis for further improving the cold resistance of fruit trees and cultivating new varieties of hardy plants.

关键词： Low temperature stress Fruit trees Growth and development Molecular mechanism Research progress

Evaluation of Cold Resistance and Semi-lethal Low Temperature(LT_(50))of Nine Pear Cultivars

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Asian Agricultural Research 2024年第6期16卷 45-47页

作者： Huan LIU Lijuan GAO Jintao XU Minghui JI Longfei LI baofeng hao Changli Institute of Pomology Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

[Objectives]To evaluate the cold resistance and semi-lethal temperature of pear cultivars,and provide a theoretical basis for the regional extension and breeding of cold-resistant pear cultivars.[Methods]Nine pear cultivars were used to study the changes in relative conductivity and cell injury rate of pear branches under low temperature stress,and the semi-lethal temperature(LT_(50))of pear branches was analyzed by fitting Logistic equation.[Results]The relative conductivity and cell injury rate of pear branches took on the trend of slow increase,rapid increase,and slow increase the decrease of treatment *** LC_(50) of the nine pear cultivars were as follows:Nanguo pear-33.9℃,Wanyu-32.3℃,Red D Anjou-31.8℃,Jinfeng-31.3℃,Wujiuxiang-29.2℃,20 th Century Pear-29.1℃,Hanxiang-35.1℃,Yuluxiang-27.9℃ and Korla Fragrant Pear-29.2℃.[Conclusions]The semi-lethal temperature could reflect the cold resistance of pear trees,and Wanxiang had better cold *** evaluation of cold resistance and semi-lethal temperature of pear cultivars can provide theoretical basis for regional extension and breeding of cold-resistant pear cultivars.

关键词： Pear Cold resistance Semi-lethal temperature (LT_(50)) Low temperature

A Light and Simplified Branch Bending Method for Young Pear Trees

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Plant Diseases and Pests 2024年第2期15卷 19-21页

作者： Jintao XU Longfei LI Minghui JI Huan LIU Lijuan GAO baofeng hao Changli Institute of Pomology Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

Aiming at high cost and low efficiency of conventional branch bending method in the modern intensive planting and labor-saving cultivation mode of young pear trees,this paper provides a new branch bending method with wide source of raw materials,cheap price and simple operation,which is also suitable for the management of low-age branches in the process of high grafting and upgrading of traditional big trees.

关键词： Pear tree Light and simplified Branch bending Method

Control Effects of Different Fungicides on Pear Scab

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Plant Diseases and Pests 2020年第4期11卷 17-19页

作者： Geo Lijuan Zhang Hai'e Xu Jintao Li Longfei Ji Minghui hao baofeng Changli Institute of Pomology Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

[Objective] The paper was to select different fungicides for field efficacy test against pear scab in summer.[Method] Five treatments were designed in the test,including 10% difenoconazole WDG 6 000 times dilution,50% captan WP 600 times dilution,30% pyraclostrobin SC 2 000 times dilution,430 g/L tebuconazole 4 000 times dilution,and water(control).[Result] 10% Difenoconazole WDG 6 000 times dilution,50% captan WP 600 times dilution,30% pyraclostrobin SC 2 000 times dilution,430 g/L tebuconazole SC 4 000 times dilution had good control effects against pear scab,and the efficacies were 89.13%-93.51%.[Conclusion] The results will provide the theoretical basis for field control of pear scab in summer.

关键词： Pear scab Fungicide Control

Key Points of Prevention and Control Technology against Pear Powdery Mildew

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Plant Diseases and Pests 2021年第4期12卷 21-22,27页

作者： Lijuan Gao Jintao Xu Longfiei Li Minghui Ji Hai'e Zhang baofeng hao Changli Institute of Pomology Hebei Academy of Agriculture and Forestry SciencesChan或066600China

Due to the lack of attention to the prevention and control of powdery mildew in pear orchard in autumn,the occurrence of pear powdery mildew is aggravating year by year,and it has become one of the main diseases of pear *** this paper,the symptom diagnosis,incidence regu-larity and prevention and control technology of pear powdery mildew are summarized,which will provide the reference for prevention and treatment of pear powdery mildew in production.

关键词： Pear powdery mildew Symptom Incidence regularity Prevention and control

Optimization of Texture Determination of ‘Yali' by Texture Analyzer

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Agricultural Biotechnology 2018年第4期7卷 125-128,135页

作者： Jintao XU Lijuan GAO Longfei LI Hai'e ZHANG Wenquan LE baofeng hao Changli Institute of Pomology Fruit Tree Hebei Academy of Agriculture and Forestry Sciences

[Objectives] This study was carried out to determine texture parameters for texture profile analysis （TPA）, and optimize the texture determination of ‘Yali’ by texture analyzer.[Methods] The traditional varieties of ‘Yali’ were taken as the materials, and texture parameters were determined at different compression rates and deformations at target.[Results] In the process of the TPA, the deformation at target had an extremely significant influence on 8 TPA texture parameters, namely, the hardness, cohesiveness, springiness, adhesiveness, gumminess, resilience, fracturability, and chewiness （ P ≤0.01）, while the compression rate had significant influence on the hardness and gumminess （ P ≤0.05）, had an extremely significant influence on fracturability （ P ≤0.01）, and had no significant influence on other 5 TPA parameters.[Conclusions] Taking the compression rate of 1 mm/s and 20% deformation at target as the experimental conditions for TPA could avoid the impact load of high speed on the tissue and objectively reflect the textural characteristics of ‘Yali’ pulp tissue.

关键词： Texture profile analysis (TPA) 'Yali' Texture parameters Optimization of texture determination

Differential Gene Expression and Analysis inVenturia nashicola-inoculated and UninoculatedLeaves of the New Highly Resistant Germplasm03-04-034

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Agricultural Science & Technology 2017年第3期18卷 389-393页

作者： Hale ZHANG Lijuan GAO Longfei LI Jintao XU baofeng hao Yang YANG Yonghong LI Changli Institute of Pomology Hebei Academy of Agricultural and Forestry Science Changli 066600 China

The super line 03-04-034, which results from a cross between Pyrus bretchneideri cv Jingbaili and *** cv Yali, is highly resistant to pear *** were inoculated with Venturia nashicola to generate a database of expressed sequence tags(ESTs) to be used as resources for transcripts induced in inoculated and uninoculated leaves. After performing subtractive suppression hybridization using cDNA of the inoculated and uninoculated leaves harvested 51 h after inoculation, 100 clones from the uninoculated and 100 clones from the inoculated cDNA library were selected and sequenced. BLASTN searches of each cDNA library against GenBank revealed eight unique sequences associated with the defense response, comprising four ESTs from the uninoculated cDNA library(ubiquitin extension protein, subtilisin-like protease, basic helix-loop-helix(bHLH) transcription factor and aspartic endopeptidase) and four ESTs from the inoculated cDNA library(S-adenosylmethionine synthase(SAMS), heat shock factor(HSF) domain class transcription factor, RNA-binding protein and polyphenol oxidase 5 precursor).Quantitative fluorescence real-time polymerase chain analysis revealed that the transcripts for SAMS and subtilisin-like protease were highly expressed in the incompatible interaction. The SAMS gene was more highly expressed in inoculated leaves than uninoculated leaves, while the reverse was true for subtilisin-like protease. The SAMS and subtilisin-like protease genes have been found to be associated with plant defense mechanisms. Further studies of greater detail are required to understand how these genes are expressed and regulated during infection with ***.

关键词： Venturia nashicola Resistance Subtractive suppression hybridization Fluorescence quantitative real-time polymerasechain reaction

Study on the Changes of the Major Nutrient Elements During Simple Composting Process of Dry Chicken Manure

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Agricultural Biotechnology 2020年第6期9卷 95-98,103页

作者： Jintao XU Longfei LI Lijuan GAO Yong GUO Hai'e ZHANG Minghui JI baofeng hao Institute of Changli Fruit Tree Hebei Academy of Agriculture and Forestry SciencesChangli 066600China

[Objectives]This study was conducted to provide a theoretical basis for production and application of chicken manure compost.[Methods]With dry manure as a material,the variations of the major nutrients during simple composting process of dry chicken manure were studied,in order to get the best fermentation method.[Results]Chicken manure should not be preserved wet,but should be preserved after air-drying and fermented before *** moisture,simple sealing treatment and a certain amount of N element were conducive to simple fermentation of chicken *** treatments in which the chicken manure was wrapped around and compacted,added with an appropriate amount of water(50%-60%)and naturally fermented,or was wrapped around and compacted and added with an appropriate amount of water(50%-60%)and 0.2%of urea,were more appropriate for the production directly.[Conclusions]This study provides a theoretical basis for the actual production and application of chicken manure compost.

关键词： Chicken manure Simple composting process Nutrient element Changing relationship