摘要:

According to EC regulations, imported material of tuber‐formingSolariumspp. has to be tested for the absence of defined quarantine viruses. In order to allow an efficient and timesaving application of the quarantine inspection procedure, antisera have been developed and scrutinized for their use by the ELISA technique. The viruses concerned were Andean potato latent virus (APLV), Andean potato mottle virus (APMV), arracacha virus B oca strain (AVB‐O), potato virus T (PVT) and tobacco ringspot virus Andean potato calico strain (TRSV‐Ca). The results show that all viruses can be reliably detected by double‐antibody sandwich (DAS) ELISA. The detection limits were in the range ≤ 1–32 ng ml−1. The strain specificity by DAS‐ELISA of the antisera for APLV and APMV was overcome by mixing antisera from the different strains and strain groups, respectively. Strains C and Lm of APMV seemed to be serologically identical. A comparison of the suceptibility of several wild species of tuber‐formingSolanumwith that of several cultivarsof Solanum tuberosumshowed a higher frequency of infection in

ISSN:0250-8052    

DOI:10.1111/j.1365-2338.1990.tb00180.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Sweden requires all coniferous roundwood from countries outside Europe to have been debarked but makes no requirement for European wood. Six shipments of unbarked roundwood ofPinus pinasterfrom France and 14 shipments of debarkedP. radiatalogs from Chile were inspected in Sweden during 1988 and 1989. The imported wood from France yielded 92 insect species (90 Coleoptera and 2 Hymenoptera). Seventeen of these species do not occur in Sweden. All six consignments were thoroughly attacked by bark‐ and wood‐boring insects, representing 25 species. The logs from Chile had been well debarked; less than 1% of the inspected logs contained living insects. Nevertheless, a total of 49 insect species (46 Coleoptera, 1 Isoptera, 1 Hymenoptera and 1 Orthoptera) were found in the 14 shipments. Of these species 21 are not indigenous to Swe

ISSN:0250-8052    

DOI:10.1111/j.1365-2338.1990.tb00181.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Erwinia carotovorassp.carotovoracan be detected very effectively in lily bulbs by anaerobic incubation of the bulbs followed by homogenization of the scales and plating of the diluted sap onto crystal‐violet pectate medium. This technique, compared with bulb treatments without preliminary anaerobic incubation, also improves the possibility of recoveringE.c.carotovoraoverall at low storage temperatures in the long term. Differences amongLiliumcultivars regarding the interaction withE.c.carotovoraprobably exist; the bacterium multiplied at a higher rate in bulbs of cvs Enchantment, Mont Blanc, Star Gazer and Yellow Blaze. The technique could allow inspection of lily bulbs before plantin

ISSN:0250-8052    

DOI:10.1111/j.1365-2338.1990.tb00182.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

A 2‐year study was performed on the effect ofCydia molestaon the incidence ofMoniliniaspp. on quince fuits. In YugoslaviaC. molestaregularly occurs in the Čačak area (western Serbia) and is a highly important pest of peach and quince. In Yugoslav conditions it develops four generations a year. The 1st and 2nd generations usually develop on peach and the 3rd and 4th on quince. The proportion of quince fruits injured byC. molestacan reach 78%, with up to 12 caterpillars per fruit.C. molestahad a great effect on the incidence ofMoniliniaspp. on quince fruits. Of the total number of fruits affected by fruit rot, 84 and 88% had been injured byC. molestain 1987 and 1988, respectively. Timely control ofC. molestais the most effective measure against the incidence ofMoniliniaspp. on quince fru

ISSN:0250-8052    

DOI:10.1111/j.1365-2338.1990.tb00183.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Les méthodes de diagnostic de la maladie du bayoud du palmier dattier, provoquée parFusarium oxysporumf.sp.albedinis, sont présentées et évaluées: symptomatologie, tests de pathogénicité, caractéristiques culturales du champignon, compatibilité v

ISSN:0250-8052    

DOI:10.1111/j.1365-2338.1990.tb00184.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

ISSN:0250-8052    

DOI:10.1111/j.1365-2338.1990.tb00185.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Two scales were included in the original key published inBulletin OEPP/EPPO Bulletin17, 525–531, i.e. a scale used in Australia (Siddiquiet al., 1975) and a scale used in France, developed by CETIOM. In this revised key, a decimal scale from the Federal Republic of Germany has been added and is presented on the left, as is EPPO's general rule for harmonized decimal scales.Le document original, publié dans leBulletin OEPP/EPPO Bulletin17, 525–531 sur les stades de développement du tournesol se référait à deux échelles: une utilisée en Australie (Siddiquiet al., 1975) et une mise au point par le CETIOM en France. La présente version comprend aussi une échelle décimale fournie par la République fédérale ďAllemagne, qui est présentée à gauche du tableau en conformité de la règle générale de ľOEPP pour une é

ISSN:0250-8052    

DOI:10.1111/j.1365-2338.1990.tb00186.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

ISSN:0250-8052    

DOI:10.1111/j.1365-2338.1990.tb00187.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

摘要:

Two scales are presented: a decimal scale proposed by Schottet al.(1988) of BASF and an American scale (Hanway&Thompson, 1971) used by FAO (1977).Deux échelles sont présentées: une décimale, développée par Schottet al.(1988) de BASF et une américaine (Hanway&Thompson, 1971) adoptée par la FAO

ISSN:0250-8052    

DOI:10.1111/j.1365-2338.1990.tb00188.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY

ISSN:0250-8052    

DOI:10.1111/j.1365-2338.1990.tb00189.x

出版商:Blackwell Publishing Ltd    

年代:1990

数据来源: WILEY