Hera Nadeem, Amir Khan, Rishil Gupta, Arshi Anees, Faheem Ahmad
{"title":"用Seinhorst模型测定爪哇根结线虫感染胡芦巴Cv.UM202。","authors":"Hera Nadeem, Amir Khan, Rishil Gupta, Arshi Anees, Faheem Ahmad","doi":"10.2478/jofnem-2023-0005","DOIUrl":null,"url":null,"abstract":"<p><p>Root-knot nematodes (RKNs) have been shown to be challenging and persistent pests of economic crops worldwide. Among RKNs, <i>Meloidogyne javanica</i> is particularly important, as it rapidly spreads and has a diverse host range. Measuring its damaging threshold level will help us to develop management strategies for adequate plant protection against nematodes. In our study, we observed the relationship between a linear series of 12 initial population densities (P<sub>i</sub>) of <i>M. javanica</i>, i.e., 0, 0.125, 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64, and 128 second-staged juveniles (J2s) g<sup>-1</sup> soil, and fenugreek cv. UM202 growth parameters were investigated using a Seinhorst model. A Seinhorst model was fitted to shoot length and dry weight data for fenugreek plants. A positive correlation was found between J2s inoculum levels and percent reductions in growth parameters. The 1.3 J2s of <i>M. javanica</i> g<sup>-1</sup> soil were found to damage threshold levels with respect to shoot length and shoot dry weight of fenugreek plants. The minimum relative values (m) for shoot length and shoot dry weight were 0.15 and 0.17, respectively, at P<sub>i</sub> =128 J2s g<sup>-1</sup> soil. The maximum nematode reproduction rate (P<sub>f</sub> /P<sub>i</sub>) was 31.6 at an initial population density (P<sub>i</sub>) of 2 J2s g<sup>-1</sup> soil.</p>","PeriodicalId":16475,"journal":{"name":"Journal of nematology","volume":null,"pages":null},"PeriodicalIF":1.4000,"publicationDate":"2023-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9984803/pdf/","citationCount":"0","resultStr":"{\"title\":\"A Seinhorst Model Determined the Host-Parasite Relationships of <i>Meloidogyne Javanica</i> Infecting Fenugreek Cv. UM202.\",\"authors\":\"Hera Nadeem, Amir Khan, Rishil Gupta, Arshi Anees, Faheem Ahmad\",\"doi\":\"10.2478/jofnem-2023-0005\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Root-knot nematodes (RKNs) have been shown to be challenging and persistent pests of economic crops worldwide. Among RKNs, <i>Meloidogyne javanica</i> is particularly important, as it rapidly spreads and has a diverse host range. Measuring its damaging threshold level will help us to develop management strategies for adequate plant protection against nematodes. In our study, we observed the relationship between a linear series of 12 initial population densities (P<sub>i</sub>) of <i>M. javanica</i>, i.e., 0, 0.125, 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64, and 128 second-staged juveniles (J2s) g<sup>-1</sup> soil, and fenugreek cv. UM202 growth parameters were investigated using a Seinhorst model. A Seinhorst model was fitted to shoot length and dry weight data for fenugreek plants. A positive correlation was found between J2s inoculum levels and percent reductions in growth parameters. The 1.3 J2s of <i>M. javanica</i> g<sup>-1</sup> soil were found to damage threshold levels with respect to shoot length and shoot dry weight of fenugreek plants. The minimum relative values (m) for shoot length and shoot dry weight were 0.15 and 0.17, respectively, at P<sub>i</sub> =128 J2s g<sup>-1</sup> soil. The maximum nematode reproduction rate (P<sub>f</sub> /P<sub>i</sub>) was 31.6 at an initial population density (P<sub>i</sub>) of 2 J2s g<sup>-1</sup> soil.</p>\",\"PeriodicalId\":16475,\"journal\":{\"name\":\"Journal of nematology\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2023-02-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9984803/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of nematology\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.2478/jofnem-2023-0005\",\"RegionNum\":4,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2023/2/1 0:00:00\",\"PubModel\":\"eCollection\",\"JCR\":\"Q2\",\"JCRName\":\"ZOOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of nematology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.2478/jofnem-2023-0005","RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2023/2/1 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"ZOOLOGY","Score":null,"Total":0}
A Seinhorst Model Determined the Host-Parasite Relationships of Meloidogyne Javanica Infecting Fenugreek Cv. UM202.
Root-knot nematodes (RKNs) have been shown to be challenging and persistent pests of economic crops worldwide. Among RKNs, Meloidogyne javanica is particularly important, as it rapidly spreads and has a diverse host range. Measuring its damaging threshold level will help us to develop management strategies for adequate plant protection against nematodes. In our study, we observed the relationship between a linear series of 12 initial population densities (Pi) of M. javanica, i.e., 0, 0.125, 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64, and 128 second-staged juveniles (J2s) g-1 soil, and fenugreek cv. UM202 growth parameters were investigated using a Seinhorst model. A Seinhorst model was fitted to shoot length and dry weight data for fenugreek plants. A positive correlation was found between J2s inoculum levels and percent reductions in growth parameters. The 1.3 J2s of M. javanica g-1 soil were found to damage threshold levels with respect to shoot length and shoot dry weight of fenugreek plants. The minimum relative values (m) for shoot length and shoot dry weight were 0.15 and 0.17, respectively, at Pi =128 J2s g-1 soil. The maximum nematode reproduction rate (Pf /Pi) was 31.6 at an initial population density (Pi) of 2 J2s g-1 soil.
期刊介绍:
Journal of Nematology is the official technical and scientific communication publication of the Society of Nematologists since 1969. The journal publishes original papers on all aspects of basic, applied, descriptive, theoretical or experimental nematology and adheres to strict peer-review policy. Other categories of papers include invited reviews, research notes, abstracts of papers presented at annual meetings, and special publications as appropriate.