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The viability of Meloidogyne incognita eggs released from egg masses of different ages using different concentrations of sodium hypochlorite 不同浓度的次氯酸钠对不同年龄的卵群释放出的隐绒圆母卵的存活率的影响
Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005325998X00081
M. Ehwaeti, M. Phillips, D. Trudgill
{"title":"The viability of Meloidogyne incognita eggs released from egg masses of different ages using different concentrations of sodium hypochlorite","authors":"M. Ehwaeti, M. Phillips, D. Trudgill","doi":"10.1163/005325998X00081","DOIUrl":"https://doi.org/10.1163/005325998X00081","url":null,"abstract":"The proportion of eggs of Meloidogyne incognita which hatched following extraction from egg masses with sodium hypochlorite solution (NaOCl) was shown to be related to the proportion that were embryonated at the time of extraction. Following NaOCl extraction, young egg masses (4-5 weeks after inoculation), which contained proportionally fewer embryonated eggs, yielded proportionally fewer juveniles than did old egg-masses (8-9 weeks). Using eggs extracted with NaOCl as inoculum a similar difference was observed in the numbers of juveniles which invaded tomato roots. Differences between two experiments in the rate at which eggs were released by the same nominal concentration of NaOCl were subsequently attributed to differences in chlorine (Cl) content. A further experiment where the Cl content was assayed showed that the numbers of eggs extracted increased, but that their viability decreased, with increasing concentration and duration of exposure to NaOCl. Overall, NaOCl was most effective when used on older egg masses with a high proportion of embryonated eggs.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"8 1","pages":"207-219"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87903120","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
The genus Basiria Siddiqi, 1959 (Nematoda: Tylenchidae) IV. General discussion, genus diagnosis and key to the species. [3]刺毛线虫属，1959(线虫纲:刺毛线虫科)IV.总论、属诊断及种键。
Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005225998X00019
A. Karegar, E. Geraert
{"title":"The genus Basiria Siddiqi, 1959 (Nematoda: Tylenchidae) IV. General discussion, genus diagnosis and key to the species.","authors":"A. Karegar, E. Geraert","doi":"10.1163/005225998X00019","DOIUrl":"https://doi.org/10.1163/005225998X00019","url":null,"abstract":"General morphological aspects of the genus Basiria Siddiqi, 1959 are described and discussed. The variability and taxonomic importance of several morphological f'eatures are evaluated. Body, tail and stylet length which have been uscd Ibr differentiation of some species are considered to be variable characters. The position of the median bulb (MB ratio) and the number of lateral lines are the most reliable characters Ior Basiria species differentiation. The shape of basal bulb and head, position of the dorsal oesophageal gland orifice, and the tail shape (in specres with short and conical tail) are also to some extent reliable. The diagnosis of Basiria is emended and close relationships with other genera are briefly discussed. The list of 35 species included in the genus and a key to therr identification are provided.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"174 1","pages":"1-13"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85410627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Description of a New Species of Plectus Bastian, 1865 (Nematoda: Plectidae) and the Males of Two Other Species From Northern Spain 西班牙北部巴氏直流子一新种记述(线虫纲:直流子科)及其他两种雄种
Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005725998X00041
M. Hernández, A. Imaz, I. Armendâriz
{"title":"Description of a New Species of Plectus Bastian, 1865 (Nematoda: Plectidae) and the Males of Two Other Species From Northern Spain","authors":"M. Hernández, A. Imaz, I. Armendâriz","doi":"10.1163/005725998X00041","DOIUrl":"https://doi.org/10.1163/005725998X00041","url":null,"abstract":"This paper presents the description of Plectus sabinae sp.n., which differs from other species of the genus, in its extremely long tail, 125-233 μm, c = 2.7-4.1, c' = 21-31. The males of Plectus longicaudatus and Plectus minumus are described for the first time.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"101 1","pages":"631-642"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75452550","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Identification of Pratylenchus Coffeae and P. Loosi Using Specific Primers for PCR Amplification of Ribosomal DNA 用特异引物扩增核糖体DNA鉴定咖啡扇叶螨和松叶螨
Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005525998X00034
T. Uehara, T. Mizukubo, A. Kushida, Y. Momota
{"title":"Identification of Pratylenchus Coffeae and P. Loosi Using Specific Primers for PCR Amplification of Ribosomal DNA","authors":"T. Uehara, T. Mizukubo, A. Kushida, Y. Momota","doi":"10.1163/005525998X00034","DOIUrl":"https://doi.org/10.1163/005525998X00034","url":null,"abstract":"The 18-26S region of rDNA of P. coffeae and P. loosi were amplified by PCR from genomic DNA. Sequence analyses indicated that the 5.8S gene sequences were conserved whereas the internal transcribed spacer (ITS) sequences were divergent. Sequence differences in the ITS were used to synthesize specific primer sets to differentiate P. coffeae and P. loosi. PCR assays with these primers specifically amplified a characteristic DNA fragment from each species. Moreover, the same specific amplification products were obtained using DNA extracted from single females males or juveniles.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"5 1","pages":"357-368"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78410459","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 51
Influence of the Microbial Community of a Sahel Soil On the Interactions Between Meloidogyne Javanica and Pasteuria Penetrans 萨赫勒地区土壤微生物群落对javanmeloidogyne与穿透性巴氏菌相互作用的影响
Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005525998X00016
R. Duponnois, A. Bâ
{"title":"Influence of the Microbial Community of a Sahel Soil On the Interactions Between Meloidogyne Javanica and Pasteuria Penetrans","authors":"R. Duponnois, A. Bâ","doi":"10.1163/005525998X00016","DOIUrl":"https://doi.org/10.1163/005525998X00016","url":null,"abstract":"The suppressiveness of Sahel soil against the root-knot nematode Meloidogyne javanica was studied. This soil was compared to another of the same type, collected from an adjacent vegetable plot. However, only one soil was infested by Pasteuria penetrans. Tomato plant and nematode development were greater in the soil with the P. penetrans. The multiplication of P. penetrans added to both sterilized soils was effective. Moreover, the presence of P. penetrans was associated with a larger microbial population (bacteria (fluorescent Pseudomonas), nematophagous and mycorrhizal fungi) which stimulated the attachment of Pasteuria spores to root-knot nematode juveniles. The incidence of the interactions between these microorganisms on the multiplication of the root-knot nematodes is discussed.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"83 1","pages":"331-343"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77039492","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
What are symbiotic bacteria doing in the ovaria of Xiphinema americanum-group species? 共生细菌在美洲西菲纳蝇群的卵巢中有什么作用?
Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005425998X00080
A. Coomans, A. Willems
{"title":"What are symbiotic bacteria doing in the ovaria of Xiphinema americanum-group species?","authors":"A. Coomans, A. Willems","doi":"10.1163/005425998X00080","DOIUrl":"https://doi.org/10.1163/005425998X00080","url":null,"abstract":"","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"17 1","pages":"323-326"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75469697","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
On the Morphology of Penjatinema Natalense N.Gen., N.Sp., With Proposal of a New Subfamily, Penjatinematinae (Rhabditida: Cephalobidae) 关于白刺麻的形态研究。, N.Sp。提出了一个新亚科——头足虫亚科(横纹肌目:头足虫科)
Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005525998X00052
J. Heyns, A. Swart
{"title":"On the Morphology of Penjatinema Natalense N.Gen., N.Sp., With Proposal of a New Subfamily, Penjatinematinae (Rhabditida: Cephalobidae)","authors":"J. Heyns, A. Swart","doi":"10.1163/005525998X00052","DOIUrl":"https://doi.org/10.1163/005525998X00052","url":null,"abstract":"Penjatinema natalense n.gen., n.sp. is described from coastal dune sands in KwaZulu-Natal, South Africa. The new species differs from all other Cephaloboidea in having a conspicuously striated cuticle with pronounced longitudinal ridges, and in the absence of lateral lines or incisures. It agrees with Cephalobidae in head structure and the possession of labial probolae, as well as in the structure of the reproductive system. A new subfamily, Penjatinematinae, is proposed to accommodate this remarkable nematode.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"143 1","pages":"381-390"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77451199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Variation of Virulence, in Terms of Quantitative Reproduction of Globodera Pallida Populations, From Europe and South America, in Relation To Resistance From Solanum Vernei and S. Tuberosum Ssp. Andigena Cpc 2802 从数量繁殖的角度看，欧洲和南美苍毛球虱种群的毒力变异与龙葵和龙葵抗性的关系。Andigena Cpc 2802
Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005525998X00070
M. Phillips, D. Trudgill
{"title":"Variation of Virulence, in Terms of Quantitative Reproduction of Globodera Pallida Populations, From Europe and South America, in Relation To Resistance From Solanum Vernei and S. Tuberosum Ssp. Andigena Cpc 2802","authors":"M. Phillips, D. Trudgill","doi":"10.1163/005525998X00070","DOIUrl":"https://doi.org/10.1163/005525998X00070","url":null,"abstract":"Forty populations of Globodera pallida originating from either South America or field sites in Europe were tested for their reproductive ability on a susceptible potato cultivar and five genotypes with quantitative resistance from either Solanum vernei or S. tuberosum ssp. andigena CPC 2802 in a glasshouse pot experiment. The results showed that there was a wide and continuous range of virulence (85% to 4% reproduction) to all the resistant genotypes. This range was as broad within the European populations as within those from S. America. There was a significant host clone x nematode population interaction, largely accounted for by grouping the clones according to the source of resistance and the populations by their continent of origin. Populations from Europe were relatively more virulent on genotypes derived from S. vernei. In contrast, populations from S. America were relatively more virulent on genotypes derived from S. tuberosum ssp. andigena CPC 2802. Examination of the data from the European populations also showed a significant host x population interaction tending to separate British from mainland European populations.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"38 1","pages":"409-423"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89041847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 39
Inter and intra-specific genomic variability of the potato cyst nematodes Globodera pallida and G. rostochiensis from Europe and South America using RAPD-PCR. 利用RAPD-PCR分析欧洲和南美马铃薯包囊线虫的种间和种内基因组变异性。
Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005225998X00064
I. F. Bendezu, K. Evans, P. Burrows, D. D. Pomerai, M. Canto-Saenz
{"title":"Inter and intra-specific genomic variability of the potato cyst nematodes Globodera pallida and G. rostochiensis from Europe and South America using RAPD-PCR.","authors":"I. F. Bendezu, K. Evans, P. Burrows, D. D. Pomerai, M. Canto-Saenz","doi":"10.1163/005225998X00064","DOIUrl":"https://doi.org/10.1163/005225998X00064","url":null,"abstract":"Eleven populations of the potato cyst nematode Globodera pallida from the UK and Peru were analyzed and compared using RAPD-PCR with four 10-mer primers. In addition, seven populations of G. rostochiensis from the UK and single populations from Germany, the Netherlands and Bolivia were included for comparison. Genomic variability was found both between and within species, with more variability in G. pallida than G. rostochiensis. The genomic pool of British G. pallida populations showed considerably less variation than the Peruvian populations, with 73% and 41% similarity between populations respectively. The genomic similarity among populations of G. rostochiensis was 89% for UK populations and 82% when the two continental European populations were included. Nevertheless, between populations within each species and from the same locality, genomic differences were still found.","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"323 1","pages":"49-61"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75457681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 21
Taxonomic comments on the genus Steinernema (Nematoda: Steinernematidae): specific epithets and distribution record 标题线虫属(线虫纲:线虫科)的分类学评论:专称和分布记录
Nematologica Pub Date : 1998-01-01 DOI: 10.1163/005425998X00071
Jie Liu, G. Poinar, R. Berry
{"title":"Taxonomic comments on the genus Steinernema (Nematoda: Steinernematidae): specific epithets and distribution record","authors":"Jie Liu, G. Poinar, R. Berry","doi":"10.1163/005425998X00071","DOIUrl":"https://doi.org/10.1163/005425998X00071","url":null,"abstract":"","PeriodicalId":18988,"journal":{"name":"Nematologica","volume":"46 1","pages":"321-322"},"PeriodicalIF":0.0,"publicationDate":"1998-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80643396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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