EFFECT OF SOME AGRICULTURAL PRACTICES ON THE INFESTATION OF SOYBEAN (GLYCINE MAX L.) WITH TETRANYCHUS URTICAE (KOCH.) AND BEMISIA TABACI (GEN.) IN SOHAG GOVERNORATE

2012 ◽  
Vol 90 (3) ◽  
pp. 1029-1039
Author(s):  
FARGHAL A. SLMAN ◽  
WALED A. MAHMOUD ◽  
MAGDY A. AHMED ◽  
REDA A. AMER
Keyword(s):  
Glycine Max ◽  
Tetranychus Urticae ◽  
Bemisia Tabaci ◽  
Agricultural Practices ◽  
Glycine Max L ◽  
Tetranychus Urticae Koch

scholarly journals Soybean (Glycine max L Merr) host-plant defenses and resistance to the two-spotted spider mite (Tetranychus urticae Koch)

PLoS ONE ◽  
2021 ◽  
Vol 16 (10) ◽  
pp. e0258198
Author(s):  
Ian M. Scott ◽  
Tim McDowell ◽  
Justin B. Renaud ◽  
Sophie W. Krolikowski ◽  
Ling Chen ◽  
...  
Keyword(s):  
Glycine Max ◽  
Tetranychus Urticae ◽  
Spider Mite ◽  
Weather Conditions ◽  
Specialized Metabolites ◽  
Significant Difference ◽  
Depth Analysis ◽  
Glycine Max L ◽  
Two Spotted Spider Mite ◽  
Tetranychus Urticae Koch

In southern Ontario, Canada, the two-spotted spider mite (Tetranychus urticae) is an emerging pest of soybean (Glycine max) due to the increasing incidence of warmer, drier weather conditions. One key strategy to manage soybean pests is breeding resistant cultivars. Resistance to pathogens and herbivores in soybean has been associated with isoflavonoid phytoalexins, a group of specialized metabolites commonly associated with root, leaf and seed tissues. A survey of 18 Ontario soybean cultivars for spider mite resistance included evaluations of antibiosis and tolerance in relation to isoflavonoid and other metabolites detected in the leaves. Ten-day and 4-week trials beginning with early growth stage plants were used to compare survival, growth, fecundity as well as damage to leaves. Two-spotted spider mite (TSSM) counts were correlated with HPLC measurements of isoflavonoid concentration in the leaves and global metabolite profiling by high resolution LC-MS to identify other metabolites unique to the most resistant (R) and susceptible (S) cultivars. Within 10 days, no significant difference (P>0.05) in resistance to TSSM was determined between cultivars, but after 4 weeks, one cultivar, OAC Avatar, was revealed to have the lowest number of adult TSSMs and their eggs. Other cultivars showing partial resistance included OAC Wallace and OAC Lakeview, while Pagoda was the most tolerant to TSSM feeding. A low, positive correlation between isoflavonoid concentrations and TSSM counts and feeding damage indicated these compounds alone do not explain the range of resistance or tolerance observed. In contrast, other metabolite features were significantly different (P<0.05) in R versus S cultivars. In the presence of TSSM, the R cultivars had significantly greater (P<0.05) concentrations of the free amino acids Trp, Val, Thr, Glu, Asp and His relative to S cultivars. Furthermore, the R cultivar metabolites detected are viable targets for more in-depth analysis of their potential roles in TSSM defense.

Toxicity of essential oil vapours to two greenhouse pests, Tetranychus urticae Koch and Bemisia tabaci Genn.

2004 ◽  
Vol 19 (2) ◽  
pp. 167-173 ◽  
Author(s):  
İrfan Aslan ◽  
Hikmet Özbek ◽  
Önder Çalmaşur ◽  
Fikrettin Şahi̇n
Keyword(s):  
Essential Oil ◽  
Tetranychus Urticae ◽  
Bemisia Tabaci ◽  
Tetranychus Urticae Koch

scholarly journals Guayparime S-10, nueva variedad de soya resistente a mosca blanca y geminivirus para Sinaloa

2017 ◽  
Vol 8 (1) ◽  
pp. 241
Author(s):  
Franklin G. Rodríguez-Cota ◽  
Pedro Manjarrez-Sandoval ◽  
Edgardo Cortez-Mondaca ◽  
Raúl H. Sauceda-Acosta ◽  
Víctor Valenzuela-Herrera ◽  
...  
Keyword(s):  
Glycine Max ◽  
Bemisia Tabaci ◽  
Technological Research ◽  
Glycine Max L ◽  
Technological Research Institute ◽  
Research Institute

México importa prácticamente toda la soya (Glycine max L) Merr. que requiere, del periodo 2000 a 2008 la producción anual promedio de soya fue de sólo 119 924 toneladas, mientras que la importación fue de 3 905 596 t. El cultivo de soya es una de las pocas alternativas de cultivo durante el verano en Sinaloa. El Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias (INIFAP), ha liberado las variedades Cajeme, Nainari (Héctor) y Esperanza que toleran el ataque directo de la mosca blanca. La mosca blanca (Bemisia tabaci biotipo “B”) es uno de los principales problemas que ocasionaron la reducción en superficie cultivada de soya en el noroeste de México, debido al daño directo que ocasiona (al succionar la savia la planta pierde de vigor, hay pérdida de flores y rendimiento) y los geminivirus que transmite. Debido a que la mosca blanca, vector de geminivirus es un problema fuerte en las principales zonas productoras del mundo, se tuvo que iniciar una intensa búsqueda de fuentes de resistencia en el germoplasma mundial, para buscar fuentes de resistencia a mosca blanca y geminivirus, en donde en el primavera- verano 2000-2000, se identificó la accesión del grupo VI PI-171443, con resistencia genética a geminivirus, confirmándose su resistencia y corroborándose mediante el ensayo por inmunoadsorción ligado a enzimas (Elisa) que no detectó la presencia de geminivirus en el follaje (PI-171443 se obtuvo de la colección de soya, del USDA- ARS en Urbana, IL. Originalmente fue colectada del Shaanxi Tianbao Soya Food Technological Research Institute, en China). Una vez identificada la fuente de resistencia a geminivirus se realizaron los cruzamientos con variedades locales.

scholarly journals Population Dynamics of Bemisia tabaci Genn. and Type of Predators Found on the Edamame Soybeans (Glycine max L.) in Mangli Jember

2017 ◽  
Vol 18 (2) ◽  
pp. 83
Author(s):  
Tulus Wijayanto ◽  
Sudarmadji Sudarmadji ◽  
Purwatiningsih Purwatiningsih ◽  
Hari Purnomo
Keyword(s):  
Population Dynamics ◽  
Glycine Max ◽  
Bemisia Tabaci ◽  
Adult Population ◽  
Coccinella Septempunctata ◽  
Growing Season ◽  
Yellow Traps ◽  
Glycine Max L ◽  
Coccinella Transversalis

The study was conducted at the edamame plantation area of PT. Mitra Tani 27 Jember with the size of 31.6 m x 29.8 m. The sampling of imature B. tabaci was done by collecting the samples of leaves from the five plots of planting. The adult samples were taken by setting some yellow traps with the size of 20 x 30 cm. The results showed that the populations of B. tabaci changed during the growing season of edamame, the older the plants grow, the greater number of the populations. The highest number of B. tabaci adult population was in the age of 10 weeks after planting, those were 818 B. tabaci. The increase of the B. tabaci population had a significant correlation with the increase of the predators population on edamame. There were seven species of predators founded at the edamame. The highest number of predator founded was Coccinella transversalis and the lowest number of predator was Coccinella septempunctata. Keywords: Bemisia tabaci Genn., edamame Soybeans, yellow traps, C. transversalis

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