scholarly journals Survey of Bemisia tabaci (Gennadius) (Hemiptera: Aleyrodidae) biotypes in Brazil using RAPD markers

2000 ◽  
Vol 23 (4) ◽  
pp. 781-785 ◽  
Author(s):  
L.H.C. Lima ◽  
D. Návia ◽  
P.W. Inglis ◽  
M.R.V. de Oliveira
Keyword(s):  
Bemisia Tabaci ◽  
Rapd Markers ◽  
Morphological Characters ◽  
Cultivated Plants ◽  
Correct Identification ◽  
Silverleaf Whitefly ◽  
Agricultural Pest ◽  
Rapd Pcr ◽  
B Biotype

In 1991, the poinsettia strain, silverleaf whitefly or B biotype of Bemisia tabaci was detected in Brazil. This variant is a far more serious agricultural pest than the previously prevalent non-B (BR) biotype. The correct identification of B. tabaci is problematic since it is highly polymorphic with extreme plasticity in key morphological characters that vary according to the host. RAPD-PCR was used to survey the B biotype and other biotypes of B. tabaci in Brazil. Whiteflies were collected from cultivated plants and weeds from 57 different localities and on 27 distinct crops. RAPD analyses using two selected 10-mer primers reliably identified the BR biotype and the B biotype of B. tabaci and also differentiated other whitefly species. The presence of the B biotype was confirmed in 20 Brazilian states. The BR and B biotypes of B. tabaci were found to coexist in the whitefly populations of three different localities: Jaboticabal, SP; Rondonópolis and Cuiabá, MT, and Goiânia, GO.

scholarly journals Sweetpotato Whitefly B Biotype of Silverleaf Whitefly, Bemisia tabaci (Gennadius) or Bemisia argentifolii Bellows & Perring (Insecta: Homoptera: Aleyrodidae)

EDIS ◽  
1969 ◽  
Vol 2002 (8) ◽  
Author(s):  
Heather J. McAuslane
Keyword(s):  
Bemisia Tabaci ◽  
Cooperative Extension ◽  
Cooperative Extension Service ◽  
Extension Service ◽  
Silverleaf Whitefly ◽  
Bemisia Argentifolii ◽  
Sweetpotato Whitefly ◽  
University Of Florida ◽  
Agricultural Sciences ◽  
B Biotype

This document is EENY-129, one of a series of Featured Creatures from the Entomology and Nematology Department, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Published: April 2000. Revised: November 2002. https://edis.ifas.ufl.edu/in286

scholarly journals Biotype status and genetic polymorphism of the whitefly Bemisia tabaci (Hemiptera: Aleyrodidae) in Greece: mitochondrial DNA and microsatellites

2007 ◽  
Vol 97 (1) ◽  
pp. 29-40 ◽  
Author(s):  
A. Tsagkarakou ◽  
C.S. Tsigenopoulos ◽  
K. Gorman ◽  
J. Lagnel ◽  
I.D. Bedford
Keyword(s):  
Genetic Polymorphism ◽  
Microsatellite Markers ◽  
Bemisia Tabaci ◽  
Diagnostic Tests ◽  
Cultivated Plants ◽  
Diagnostic Tools ◽  
Tobacco Whitefly ◽  
Q Biotype ◽  
Mitochondrial Cytochrome Oxidase ◽  
B Biotype

AbstractThe genetic polymorphism and the biotype identity of the tobacco whitefly Bemisia tabaci (Gennadius) have been studied in population samples taken from different localities within Greece from cultivated plants growing in greenhouses or in open environments and from non-cultivated plants. Two different approaches were used: sequencing of the mitochondrial cytochrome oxidase I (mtCOI) gene and genotyping using microsatellite markers. Analyses of the mtCOI sequences revealed a high homogeneity between the Greek samples which clustered together with Q biotype samples that had been collected from other countries. When genetic polymorphism was examined using six microsatellite markers, the Greek samples, which were all characterized as Q biotype were significantly differentiated from each other and clustered into at least two distinct genetic populations. Moreover, based on the fixed differences revealed by the mtCOI comparison of known B. tabaci biotype sequences, two diagnostic tests for discriminating between Q and B and non-Q/non-B biotypes were developed. Implementation of these diagnostic tools allowed an absence of the B biotype and presence of the Q biotype in the Greek samples to be determined.

scholarly journals Overview of the occurrence and prevention of Bemisia tabaci invasion in China

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Shunxiao Liu ◽  
Hao Yu ◽  
Vlasenko V.A
Keyword(s):  
Biological Invasion ◽  
Bemisia Tabaci ◽  
Agricultural Pest ◽  
Q Biotype ◽  
B Biotype

摘要Biological invasion refers to the process of invading into another new environment through natural or man-made means from the original place of existence,which includes several stages of introduction, colonization, incubation, diffusion and outbreak.Bemisia tabaci is a worldwide important agricultural pest composed of multiple biotypes. Studies have confirmed that the  B biotype Bemisia tabaci that invaded China has been genetically differentiated, and the Q biotype Bemisia tabaci has replaced the B biotype in most areas of China. Bemisia tabaci has become the dominant biotype in the field.

scholarly journals Antibiosis and antixenosis resistance to oviposition by Bemisia tabaci (Gennadius) B biotype (Hemiptera: Aleyrodidae) in soybean genotypes

2018 ◽  
Vol 85 (0) ◽  
Author(s):  
Vanusa Rodrigues Horas ◽  
Paulo Eduardo Degrande ◽  
Carlos Eduardo Carducci ◽  
Marcos Gino Fernandes
Keyword(s):  
Bemisia Tabaci ◽  
Survival Rates ◽  
Adult Survival ◽  
Silverleaf Whitefly ◽  
Egg Incubation ◽  
Choice Tests ◽  
Soybean Genotypes ◽  
Antibiosis Resistance ◽  
Bemisia Tabaci B Biotype ◽  
B Biotype

ABSTRACT: This study was aimed at assessing some biological parameters of Bemisia tabaci B biotype at immature stages to examine antibiosis in six soybean genotypes, besides antixenosis resistance to oviposition in choice and non-choice tests, under greenhouse and laboratory conditions. Between April 2016 and August 2016, bioassays were carried out at the Laboratory of Applied Entomology at College of Agricultural Sciences at Federal University of Grande Dourados (UFGD) Dourados (MS), Brazil. The following variables were evaluated: egg incubation period, nymphal and egg-to-adult duration, egg and nymph viability, and egg-to-adult survival on the soybean genotypes 68i70 RSF IPRO, M6210 IPRO, MS 947 IPRO, BMX Potência RR, M6410 IPRO, and ANTA 82 RR. Antixenosis resistance to oviposition by the silverleaf whitefly was found for MS 947 IPRO, while oviposition was highest for ANTA 82 RR, M6210 IPRO, and M6410 IPRO. The genotype MS 947 IPRO adversely affected egg and nymph viability, and egg-to-adult survival rates was the lowest among genotypes (59.75%), suggesting antibiosis resistance to this pest.

Biotype determination of Spanish populations of Bemisia tabaci (Hemiptera: Aleyrodidae)

1997 ◽  
Vol 87 (6) ◽  
pp. 587-593 ◽  
Author(s):  
P. Guirao ◽  
F. Beitia ◽  
J. L. Cenis
Keyword(s):  
Bemisia Tabaci ◽  
Balearic Islands ◽  
Genetic Types ◽  
Esterase Pattern ◽  
Rapd Pcr ◽  
The World ◽  
Spanish Populations ◽  
B Biotype ◽  
Esterase Patterns

AbstractA survey was made to assess the biotype status of populations of the whitefly Bemisia tabaci (Gennadius) in Spain. The study involved observation of the squash silverleaf reaction, analysis of esterase patterns and application of a RAPD-PCR technique. The results obtained by the three methods were fully consistent and showed that the Spanish populations of B. tabaci were composed of two genetic types. One corresponded to populations of the B biotype, found in Tenerife (Canary Islands), Barcelona, Madrid, Malaga and Almeria. The other, showing a unique RAPD and esterase pattern, was found in Majorca (Balearic Islands), Seville, Valencia, Murcia and Almeria, as well as in the Algarve Region of Portugal. RAPD patterns of other populations from the rest of the world used for comparison showed that populations from Arizona (USA), Israel, France, Denmark, Italy, Netherlands and Japan have similar RAPD patterns typical of the B biotype. By contrast, populations from the Iberian Peninsula, Turkey, India, Pakistan and Arizona (A biotype), showed different and unique patterns.

Study of genetic diversity in wild raspberry (Rubus idaeus L.) germplasm collection using morphological characters and RAPD markers

Biologija ◽  
2008 ◽  
Vol 54 (2) ◽  
pp. 66-74 ◽  
Author(s):  
Jolanta Patamsytė ◽  
Donatas Žvingila ◽  
Juozas Labokas ◽  
Virgilijus Baliuckas ◽  
Laimutė Balčiūnienė ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Rapd Markers ◽  
Germplasm Collection ◽  
Morphological Characters ◽  
Rubus Idaeus

scholarly journals Relationship Between Root and Yield Related Morphological Characters in Pea (Pisum Sativum L.)

2014 ◽  
Vol 66 (1) ◽  
pp. 3-15
Author(s):  
Sylwia Ciaglo-Androsiuk
Keyword(s):  
Root System ◽  
Morphological Traits ◽  
Lateral Roots ◽  
Morphological Characters ◽  
Yield Potential ◽  
Cultivated Plants ◽  
Genetic Determination ◽  
Canonical Correlations ◽  
Effect On Yield

AbstractRelation between morphological traits of the root system and yield related traits is an important issue concerning efforts aiming at improving of ideotype of cultivated plants species, including pea. In this paper, to analyse the dependency between traits describing the root system morphology and yield potential, Person’s andSpearman's_correlations as well as canonical correlations were used.Root system was analyzed in 14 and 21 day-old seedlings growing in blotting-paper cylinders. Yield potential of pea was analysed in a field experiment. Results of Person’s and Spearman's_correlations revealed that number of lateral roots and lateral roots density were correlated witch yield related traits. Correlation between root length and shoot length was observed only for 14 day-old seedlings. The result of canonical correlations revealed that number of lateral roots and lateral roots density had the largest effect on yield related traits. This work highlights, that in order to improve the yield of pea it might become necessary to understand genetic determination of morphological traits of the root system, especially number of lateral roots.

Sign in / Sign up

Export Citation Format

Share Document