Duración del efecto revigorizante de podas severas de plantas adultas de avellano europeo (Corylus avellana L.) cv. Negretta sobre el cultivo in vitro

Sánchez‐Olate, Manuel; Ríos, Darcy; Rodrı́guez, Roberto; Materán, María Elena; Pereira, Guillermo

doi:10.4067/s0365-28072004000400002

Cited by 5 publications

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“…et al, 2005) with a reduced morphogenetic capacity in the adult phase due to a complex metabolic and tissular system . These characteristics make it necessary to search for reinvigoration techniques appropriate to this species, such as the severe pruning applied to Corylus avellana L. (Sánchez-Olate et al, 2004) and Pinus radiata D. Don (Materán et al, 2008). …”

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confidence: 99%

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Benzi

Stefanazzi

Ferrero

2009

Chilean J. Agric. Res.

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Rice weevil (Sitophilus oryzae L.) is a primary insect pest of stored grain. The development of resistance resulted in the application of synthetic insecticides. In recent years many plant essential oils have provided potential alternatives to currently used insect control agents. The Brazilian pepper tree (Schinus molle L. var. areira (L.) DC.) (Anacardiaceae) ) (Anacardiaceae) has different biological properties such as insecticidal activity. In this study, repellent, fumigant activity, nutritional indices, and feeding deterrent action were evaluated on S. oryzae adults. Filter paper impregnation was used to test fumigant toxicity, whereas treated whole wheat was used to evaluate repellent activity and a flour disk bioassay was done to evaluate feeding deterrent action and nutritional index alteration. Leaf essential oils showed repellent effects at both concentrations (0.04 and 0.4% w/w), while fruit essential oils lacked repellent activity. Both plant oils altered nutritional indices. Fruit essential oils had a strong feeding deterrent action (62%) while leaves had a slight effect (40.6%). With respect to fumigant activity, neither of the essential oils was found to be toxic. Resistance and toxicity problems of the synthetic insecticides have resulted in the necessity of finding more effective and healthier alternatives. Thus, essential oils are the most tested products presently (Papachristos and Stamopoulus, 2002; Umoetok and Gerard, 2003; Zhang et al., 2004; Tapondjou et al., 2005; Ferrero et al., 2006; Sánchez Chopa et al., 2006, Stefanazzi et al., 2006, Wang et al., 2006. Different biological activities of plant derivatives have been demonstrated for the control of stored grain pests (Golob et al., 1999; Rajendran and Sriranjini, 2008).The Brazilian pepper tree (Schinus molle L. var. areira (L.) DC.) is associated with agricultural crops in boundaries, windbreaks, riverbank protection, and watershed conservation. In popular medicine, it is use for its astringent, diuretic, antispasmodic properties among others. In pest control, it is used as a fumigant, repellent, and ovicide (Ruffínengo et al., 2005; Ferrero et al., 2006).The objective of the present study was to evaluate the fumigant, repellent and/or attractant, feeding deterrent activity, and the alterations in the nutritional physiology produced by the essential oils from leaves and fruits of S. molle var. areira on 3-to 4-day-old S. oryzae adults. V. BENZI et al. -BIOLOGICAL ACTIVITY OF ESSENTIAL OILS… MATERIALS AND METHODS InsectsThe insects came from a susceptible colony maintained in the Cátedra de Zoología Agrícola de la Universidad Nacional de Buenos Aires (UBA). They were bred in glass containers, 8 cm in diameter, 13 cm high, sealed with fine netting, maintained at 28 ± 1 ºC, 60-70% HR, a 12:12 photoperiod, and using whole wheat grains as food. Vegetal materialThe vegetal organs (leaves and mature fruits) of the pepper tree were collected during the summer period in Bahía Blanca city, Buenos Aires, Argentina (38°41' S; 62°17' ...

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confidence: 99%

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Benzi

Stefanazzi

Ferrero

2009

Chilean J. Agric. Res.

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“…Negretta from cuttings and epicormic shoots, according to the methodology described by Sánchez-Olate et al (2004a). The culture medium used for rhizogenic induction was MS2 (modified Murashige and Skoog medium) (Sánchez-Olate et al, 1997), supplemented with 2.5 mg L -1 benzyl amino purine (BAP), 0.01 mg L -1 of 3-indole acetic acid (AIA), 0.1 mg L -1 of gibberellic acid (GA3) and 30 g L -1 of sucrose.…”

Section: Vegetal Materialsmentioning

confidence: 99%

“…The solution was then placed in sterile Petri dishes to proceed with the inoculation of microshoots with a length of 2.5 cm from the better treatments obtained in the preliminary tests (Sánchez-Olate et al, 2004a). The basal inoculation was made by submerging these microshoots in bacterial (A477 and A478) and auxinic (IBA 3 mg L -1 ) solutions for 3 min, after eliminating the axillary buds from the base of the microshoots and making lengthwise cuts of 0.5 cm to increase the area exposed to infection.…”

Section: Inoculation Of Microshootsmentioning

confidence: 99%

“…Studies by Sánchez-Olate et al (2004a) on the micropropagation of Corylus avellana, report a good response to the stimulation of cuttings for the development of vegetative buds and the feasibility of using cultured epicormic shoots and in vitro multiplication. Nevertheless, general standards cannot be established that would allow for ensuring the success of subsequent rooting and acclimatation of the seedlings (Preece et al, 1989), given that the response varies according to the genotype, ontogeny, the position of the material used and mainly the cultivation and in vitro manipulation conditions (Leslie and McGranahan, 1992;Kozai et al, 2005;Hazarika, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Root Induction in Mature Filbert (Corylus avellana L.) Explants by Agrobacterium Rhizogenes and Indolbutiric Acid

Sánchez‐Olate¹,

Sáez²,

Cartes³

et al. 2009

Chilean J. Agric. Res.

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From in vitro cultured adult material of Corylus avellana L. cv. Negretta, adventitious rooting of microshoots was evaluated. Rhizogenic induction mediated by two strains of wild-type Agrobacterium rhizogenes (A477 and A478) and indolbutyric acid (IBA) were compared under two light conditions (16:8 h photoperiod and complete darkness).The results indicate that in the 16:8 h photoperiod induction, the rooting rate with IBA (90%) was significantly higher than that obtained with the strain A477 of A. rhizogenes (67.7%), while with the strain A478 no statistically significant difference was obtained for the same variable (75%). On the other hand, under complete darkness, rooting mediated by IBA (90%) significantly surpassed the results obtained with both strains of A. rhizogenes (40 and 20%, for A478 and A477, respectively). In terms of the morphological variables of the resulting root system, induction mediated by IBA, with a 16:8 h photoperiod, generates a significantly higher number of roots (19 roots per microshoot) than that obtained with A. rhizogenes (mean 3.7 roots per microshoot), producing significant differences when comparing the results with the strain A478 (5 roots per microshoot) to those of the strain A477 (2.4 roots per microshoot). Induction under complete darkness does not have any effect on root number, independent of the rhizogenic inductor employed. Root length did not present significant differences among treatments, except in the presence of A. rhizogenes A477 and darkness.

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“…Corredoira et al (2011) confirmaron que los brotes obtenidos de ramas basales de los árboles adultos son más reactivos para el establecimiento in vitro que el material de la copa. Sin embargo, cuando no es posible disponer de estos materiales, es posible aplicar determinados tratamientos para reactivar o revigorizar tejidos adultos, aunque éstos no son permanentes (Sánchez et al 2004).…”

Section: Introductionunclassified

Efecto del genotipo y fuente de citoquinina en la etapa de iniciación de cultivo in vitro de tejido adulto de Castanea sativa Mill.

Larson¹,

Hasbún²,

Jofré³

et al. 2017

Gayana Bot.

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Duración del efecto revigorizante de podas severas de plantas adultas de avellano europeo (Corylus avellana L.) cv. Negretta sobre el cultivo in vitro

Cited by 5 publications

References 0 publications

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Biological Activity of Essential Oils from Leaves and Fruits of Pepper Tree (Schinus molle L.) to Control Rice Weevil (Sitophilus oryzae L.)

Comparison of Root Induction in Mature Filbert (Corylus avellana L.) Explants by Agrobacterium Rhizogenes and Indolbutiric Acid

Efecto del genotipo y fuente de citoquinina en la etapa de iniciación de cultivo in vitro de tejido adulto de Castanea sativa Mill.

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