%0 Journal Article
%T Feeding of Spodoptera eridania (Lepidoptera: Noctuidae)on soybean genotypes Alimentaci車n de Spodoptera eridania (Lepidoptera: Noctuidae) en genotipos de soya
%A Bruno Henrique Sardinha de Souza
%A Arlindo Leal Boiˋa J迆nior
%A J迆lio Cesar Janini
%A Anderson Gonˋalves da Silva
%J Revista Colombiana de Entomolog赤a
%D 2012
%I Sociedad Colombiana de Entomolog赤a
%X This work aimed to find soybean genotypes with low feeding preference by Spodoptera eridania larvae on 23 genotypes evaluated in three experiments, of which IAC 100 was established as the resistant genotype and BR 16 as the susceptible genotype. From the results obtained in these tests, a final experiment was carried out with the 10 most outstanding genotypes: IAC 100, PI 227682, PI 227687, DM 339, P 98Y51 RR, BRSGO 8360, IGRA RA 518 RR, IGRA RA 516 RR, IGRA RA 626 RR and BR 16. In all experiments, free choice and no choice tests were performed. In the former, leaf discs corresponding to the genotypes were placed in Petri dishes and then one third-instar larva per genotype was released. In the latter we used one leaf disc of each genotype per plate where one third-instar larva was released. The attractiveness of the third-instar larvae was evaluated at 1, 3, 5, 10, 15, 30, 60, 120, 360, 720 and 1080 minutes after their release, as well as the leaf area consumed. In both tests the genotype IAC 100 was the least attractive and consumed by the larvae, whereas BRSGO 8360 and P 98Y51 RR were the most consumed in free choice and no choice tests, respectively. Genotype IAC 100 was highly resistant to S. eridania in feeding preference experiments and thus can be cultivated or incorporated into breeding programs in order to obtain soybean plants with resistance characteristics to this pest. Este trabajo tuvo como objetivo encontrar genotipos de soya con baja preferencia para alimentaci車n por larvas de Spodoptera eridania en 23 genotipos evaluados en tres experimentos, de los cuales IAC 100 se estableci車 como el genotipo resistente y BR 16 como el susceptible. De los resultados obtenidos en estas pruebas, se realiz車 un experimento final con los 10 genotipos m芍s destacados: IAC 100, PI 227682, PI 227687, DM 339, P 98Y51 RR, BRSGO 8360, IGRA RA 518 RR, IGRA RA 516 RR, IGRA RA 626 RR y BR 16. En todos los experimentos, se realizaron pruebas con y sin opci車n de elecci車n. En el primer caso, se pusieron los discos foliares relacionados a los genotipos en placas de Petri y se liber車 una larva de tercer estadio por genotipo. En el segundo, se utiliz車 un disco de cada genotipo por placa donde se liber車 una larva de tercer estadio. La atracci車n de las larvas de tercer estadio adem芍s del 芍rea foliar consumida por las mismas se evaluaron a 1, 3, 5, 10, 15, 30, 60, 120, 360, 720 y 1080 minutos despu谷s de su liberaci車n. En ambas pruebas el genotipo IAC 100 fue el menos atractivo y consumido por las larvas, mientras que el BRSGO 8360 y P 98Y51 RR fueron los m芍s consumidos en la
%K Resistencia de plantas a los insectos
%K Atractivo
%K Gusano ej谷rcito
%K Glycine max
%K Host plant resistance
%K Attractiveness
%K Southern armyworm
%K Glycine max
%U http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-04882012000200009