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Effects of Different Seasons on Cutting Propagation of Five Citrus Rootstocks

Asian Agricultural Research 2024年第11期16卷 29-35,43页

作者： Liying GUO Yun CHEN Meiling LI Yilin CHEN Wenwen huang Yuanmeng YU guochan huang Qianhua JI Institute of Pomology Zhaoqing UniversityZhaoqing 526361China College of Life Sciences Zhaoqing UniversityZhaoqing 526361China Sichuan Science and Technology Demonstration Park Zhaoqing 526061China

[Objectives]To explore the cutting propagation mode of citrus rootstock,improve the survival rooting rate of citrus rootstock,and provide theoretical guidance and technical reference for the rooting research of difficult-to-root plants such as citrus.[Methods]Five citrus rootstocks Citrus tangerina Tanaka‘Hongju’,Citrus haniana Hort‘Suanju’,Citrus limonia Osbeck‘Hongningmeng’,Citrus sinensis×Poncirus trifoliata‘Zhicheng’and Poncirus trifoliate(L)Raf.‘Zhike’were used as experimental materials to select the suitable cutting substrate for citrus rootstocks by measuring the physical properties of the *** was carried out in spring,summer,autumn and winter *** cutting,the morphological changes of cuttings were observed regularly,and the callus rate,germination rate and rooting rate of cuttings were recorded.[Results]The best substrate for citrus rootstock cutting was peat soil,vermiculite and fine river sand(2:1:1).The callus of citrus rootstock in different cutting seasons began to appear in 10-22 d,and the callus rate reached 55%-100%.In terms of budding,the budding time was the earliest in summer and autumn,and slightly later in spring and winter;the germination rate of *** Osbeck‘Hongningmeng’was the highest,and the germination rate of ***×***‘Zhicheng’and ***(L)Raf.‘Zhike’was lower;in terms of rooting,*** Osbeck‘Hongningmeng’had the earliest rooting time and the highest rooting rate and could reach 100%in all seasons;the rooting rate of *** Tanaka‘Hongju’was 50%-80%;the rooting rate of *** Hort‘Suanju’was 60%-80%;***×***‘Zhicheng’and ***(L)Raf.‘Zhike’showed the earliest rooting time and the highest rooting rate in summer,and the latest rooting time and the lowest rooting rate in winter,which were only 14.5%.Therefore,different citrus rootstock varieties should choose the appropriate cutting time according to their own characteristics.[Conclusions]The results of th

关键词： Citrus Cutting propagation Rooting rate Varieties

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Evaluation and Exploration of Citrus Germplasm Resources in the Origin of Shatangju(Citrus flamea *** Tseng Shiyueju)

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Asian Agricultural Research 2023年第10期15卷 28-33页

作者： Yanjun GUO Qianhua JI Liying GUO guochan huang Bingwa FANG Liujian huang Hui JIANG Fengmei YANG Yaping HU Life Sciences College/Fruit Tree Research Institute of Zhaoqing University Zhaoqing 526061China Sihui Science and Technology Demonstration Park Zhaoqing 526061China

[Objectives]To protect the local rare citrus germplasm resources and further develop and cultivate new citrus varieties.[Methods]The germplasm resources of Shatangju(Citrus flamea *** Tseng Shiyueju)in Sihui City of Guangdong Province and other 8 citrus varieties from the same origin were *** appearance characteristics of tree shape,the length and thickness of shoot at each shoot stage,the appearance characteristics of leaves and the fruit quality of each variety were investigated.[Results]Through the comparison of various citrus varieties grafted with sour mandarin,the results showed that the overall advantages of the length and thickness of the shoots of Shatang tangerine in summer and autumn were more prominent,which was conducive to fruit *** sprouting time of the three shoots of each variety was different,and there were sporadic sprouting phenomena in different seasons,so the growth was different,and the length and thickness of the shoots were different in different *** were significant differences in shoot length and diameter among different varieties in the same *** coefficient of variation of Shatangju's leaves was low,and the traits were stable;leaf shape,leaf base shape,leaf margin and other indicators among the three shoots of the same variety and the differences among the same shoots of different varieties were *** varieties had strong flavor,separately sweet and sour,sweet and sweet *** has many segments,orange pericarp,rough texture,easy peeling,and high oblate fruit *** orange pericarp was favored by the participants,while the rough and thick peel was not favored by the participants.[Conclusions]Based on the improvement of local varieties,it is recommended to improve the smoothness of pericarp,reducing the thickness of pericarp and improving the flavor of fruit will be conducive to increasing *** the cultivation process of various quality resources,especially in the period of fruit

关键词： Shatangju(Citrus flamea Hort.ex Tseng Shiyueju) Germplasm resources Evaluation Zhaoqing City

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Effect of Various Citrus Rootstock-scion Combinations on Tree Growth,Fruit Quality,and Photosynthetic Characteristics under Red Loam Soil Conditions

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Asian Agricultural Research 2024年第10期16卷 41-49页

作者： Liying GUO Yanjun GUO Wenxia WU Xiaohua LI Haiyan JIANG Ying YUAN guochan huang Qianhua JI Institute of Pomology Zhaoqing UniversityZhaoqing 526361China College of Life Sciences Zhaoqing UniversityZhaoqing 526361China Sihui Science and Technology Demonstration Park Zhaoqing 526061China

[Objectives]To investigate the effects of 15 distinct citrus rootstock-scion combinations on tree growth,fruit quality,and photosynthetic characteristics under red loam soil conditions and provide a theoretical foundation for the selection of appropriate citrus rootstock-scion combinations in the Zhaoqing region.[Methods]A total of 15 citrus rootstock-scion combinations were utilized as test materials for a comprehensive analysis of their phenological periods(budding,flowering,and fruiting),tree growth indicators(tree height,crown diameter,and growth),and fruit quality(appearance quality and intrinsic quality).The photosynthetic characteristics of the test materials,including the net photosynthetic rate(Pn),transpiration rate(Tr),water use efficiency(WUE),apparent quantum yield(AQY),and carboxylation efficiency(CE),were analyzed to determine their ***,the leaf photosynthetic physiological indicators,such as soluble protein,specific leaf weight,chlorophyll,and carotenoids,were evaluated.[Results]There were notable differences observed in the phenological period,growth potential of trees,fruit quality,and photosynthetic characteristics among various citrus rootstock-scion *** phenological periods exhibited variation contingent on the grafting *** terms of tree growth potential,the Citrus tangerina Tanaka‘Hongju’and *** Hort.‘Suanju’rootstocks demonstrated greater tree height,crown growth,and overall tree strength;however,they were also prone to excessive ***,the *** Osbeck‘Hongningmeng’and ***×***‘Zhicheng’rootstocks displayed medium growth potential,while the Poncirus trifoliate(L)Raf.‘Zhike’rootstock resulted in shorter *** terms of fruit quality,the single fruit weight of *** Hort.‘Shatangju’ranged from 33 to 50 g,exhibiting a flat and round *** total soluble solids and titratable acid content of‘Shatangju’grafted onto the‘Zhike’rootstock were notably *** contr

关键词： Citrus Rootstock-scion Tree growth Fruit quality Photosynthetic characteristics

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Survey and Detection of Disease and Pest Occurrence in Citrus Nurseries

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Plant Diseases and Pests 2024年第5期15卷 19-23页

作者： Liying GUO Qinghao SONG Ying HE Jiayi TANG Xiaoting Zhuang guochan huang Qianhua JI Yaping HU Institute of Pomology Zhaoqing UniversityZhaoqing 526361China College of Life Sciences Zhaoqing UniversityZhaoqing 526361China Sihui Science and Technology Demonstration Park Zhaoqing 526061China

[Objectives]The paper was to ascertain the prevalence of diseases and pests in a range of citrus nurseries situated in Guangdong Province and its neighboring provinces.[Methods]Citrus diseases and pests were systematically investigated,and citrus leaf samples were randomly collected from 15 citrus nurseries across 8 regions in Guangdong Province and its neighboring *** polymerase chain reaction(qPCR)and reverse transcription polymerase chain reaction(RT-PCR)techniques were employed to detect diseases in the collected ***,root and substrate samples were obtained,and root-knot nematodes were isolated using the Baermann funnel method.[Results]The positive detection rate of citrus huanglongbing(HLB)was recorded at 3%,indicating an increase in attention towards this disease compared to ***,the positive detection rate for citrus bacterial canker disease(CBCD)was found to be 16.5%.It was observed that the majority of nurseries with positive samples employed open field rearing practices without the use of mesh chambers,and the primary source of scions was *** detection rate of citrus tristeza virus(CTV)was found to be the highest,with a positive detection rate of 63%,and the prevalence in disease-bearing nurseries reached as high as 90%.In comparison to 2013,there had been no improvement in the condition of seedlings affected by *** positive detection rate of citrus yellow vein clearing virus(CYVCV)was found to be 38%,with 70%of the surveyed nurseries exhibiting the *** citrus varieties identified as carriers of the disease included‘Qicheng’,‘Shatangju’,‘Wogan’,and‘Gonggan’.Nematodes were isolated from the matrix and roots of seedlings grown in both container and open field *** susceptibility of container seedlings to nematodes was found to be 36.4%,while the susceptibility of open field seedlings was 38.6%.Statistical analysis indicated no significant difference in susceptibility be

关键词： Citrus diseases and pests Investigation qPCR RT-PCR Detection

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大学生社会主义核心价值观精细化培育研究

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淮南职业技术学院学报 2017年第1期17卷 38-40页

作者：黄国灿何燕国立华侨大学政治与公共管理学院福建泉州362021 国立华侨大学华侨华人研究院福建厦门361021

社会主义核心价值观是新时期我国强国之基、兴国之魂,是当代大学生的精神支柱,大学生社会主义核心价值观的精细化培育是高校思想政治教育的主要任务之一,习近平总书记强调"一种价值观要真正发挥作用,必须融入社会生活,让人们在实践中感... 详细信息

社会主义核心价值观是新时期我国强国之基、兴国之魂,是当代大学生的精神支柱,大学生社会主义核心价值观的精细化培育是高校思想政治教育的主要任务之一,习近平总书记强调"一种价值观要真正发挥作用,必须融入社会生活,让人们在实践中感知它,领悟它";以在高校推进社会主义核心价值观精细化培育中的本源意蕴分析为出发点,对培育过程中的现实困境进行剖析,以期从多维度、多视角探索促进大学生社会主义核心价值观精细化培育的路径。

关键词：大学生社会主义核心价值观精细化培育

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中西医结合根除幽门螺杆菌90例临床观察

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中国医药导报 2010年第3期7卷 77-79页

作者：张春盛雷凯君吴声振朱国婵佛山市中医院药剂科广东佛山528000 深圳市中医院药学部广东深圳518033

目的:观察中西医结合临床根除幽门螺杆菌感染的效果。方法:经胃镜和组织学检查,选择280例Hp阳性消化性溃疡患者,随机分为三组。中西医结合组90例,给予"三黄灭幽汤",每天1剂,同时口服奥美拉唑胶囊,1次20mg,每天2次;西药三联组90例,给予... 详细信息

目的:观察中西医结合临床根除幽门螺杆菌感染的效果。方法:经胃镜和组织学检查,选择280例Hp阳性消化性溃疡患者,随机分为三组。中西医结合组90例,给予"三黄灭幽汤",每天1剂,同时口服奥美拉唑胶囊,1次20mg,每天2次;西药三联组90例,给予克拉霉素片0.25g,甲硝唑片0.4g,奥美拉唑胶囊20mg,每天2次,均口服;中药组100例,给予"三黄灭幽汤",每天1剂,疗程均为4周,疗程结束后4周复查14C-UBT。结果:中西结合组、西药三联组及中药组Hp根除率分别为92.22%,74.44%及71.00%;溃疡愈合率分别为91.11%,73.33%及72.00%。中西医结合组与西药三联组、中药组比较,均有非常显著性差异(P<0.01)。不良反应轻微,未见严重的肝、肾不良反应。结论:中西医结合根除幽门螺杆菌感染疗效确切,依从性好,不良反应少,可作为二线治疗方案。

关键词：幽门螺杆菌三黄灭幽汤根除治疗中西医结合疗效评价

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