scholarly journals Impact of exogenous alpha tocopherol on peanut seedlings (Arachis hypogaea L.) treated by norflurazon

2020 ◽  
Vol 63 (2) ◽  
pp. 125-133
Author(s):  
Imene Manaa ◽  
Reda Djebbar ◽  
Ouzna Abrous-Belbachir
Keyword(s):  
Arachis Hypogaea ◽  
Photosynthetic Activity ◽  
Reduced Glutathione ◽  
Soluble Sugar ◽  
Ascorbic Acid Content ◽  
Alpha Tocopherol ◽  
Glutathione S Transferase ◽  
Arachis Hypogaea L ◽  
Mda Content

Norflurazon 100 µM alone or in combination with α-tocopherol (0.25 mM) was applied in pre-emergence of peanut seedlings (Arachis hypogaea L.). Norflurazon treatment allowed to partially or totally photobleach plants which were noticeably smaller than the control. Norflurazon impaired the photosynthetic activity by decreasing photosynthetic pigments (carotenoids and chlorophylls) and by reducing quantities of soluble sugar. The determination of malondialdehyde (MDA) showed that its content was higher in treated plants in relation with enhancement of reactive oxygen species by the herbicide and decreased the endogenous α-tocopherol. The addition of exogenous α-tocopherol reduced the damage done by the herbicide at the membrane level because of the MDA content was less important than in norflurazon treated seedlings. Furthermore, the norflurazon decreased the glutathione S-transferase (GST) activity in the leaves and the roots of peanut seedlings, while it increased the level of reduced glutathione. This activity decreased even more with the application of exogenous α-tocopherol in combination with the herbicide. The herbicide alone or in association with the antioxidant α-tocopherol increased ascorbic acid content. The supplementation of α-tocopherol did not decrease the phytotoxicity of norflurazon although we observed a decrease in MDA content.

scholarly journals Evaluation of Tertiary Butylhydroquinone as an Antioxidant in Powdered Roasted Peanuts Products1

1979 ◽  
Vol 6 (1) ◽  
pp. 55-57 ◽  
Author(s):  
M. W. Hoover ◽  
P. N. Painter
Keyword(s):  
Quantitative Determination ◽  
Shelf Life ◽  
Arachis Hypogaea ◽  
Drug Administration ◽  
Food And Drug Administration ◽  
Fat Content ◽  
Tertiary Butylhydroquinone ◽  
Life Study ◽  
Arachis Hypogaea L

Abstract A fifteen month shelf life study was conducted to determine the effectiveness of tertiary butylhydroquinone (TBHQ) as an antioxidant in products made from roasted peanuts (Arachis hypogaea L.). Five levels of TBHQ were studied, 0.0%, 0.01%, 0.02%, 0.03%, and 0.04% based on the fat content of the peanuts. Total carbonyl assays performed monthly served as indices of rancidity. Results indicate that the shelf life of the product may be extended up to thirteen months using the 0.02% level of TBHQ now allowed by the Food and Drug Administration. In addition, the quantitative determination of total carbonyls proved to be an acceptable indicator of rancidity of roasted peanuts.

Determination of pod and crop maturity for peanuts using percent pod-fill

1992 ◽  
Vol 72 (4) ◽  
pp. 1057-1065 ◽  
Author(s):  
Margaret J. Hinds ◽  
Bharat Singh ◽  
John C. Anderson
Keyword(s):  
Arachis Hypogaea ◽  
Soil Type ◽  
Correlation Coefficients ◽  
Soil Types ◽  
Simple Method ◽  
Arachis Hypogaea L ◽  
The Individual ◽  
Crop Maturity ◽  
Composite Samples

A simple method for determining pod and crop maturity for peanuts (Arachis hypogaea L.) was developed using percent pod-fill (PF) — the percentage of green-pod volume that is seed. Peanut samples were collected 99–141 days after planting (DAP) for 3 yr from two soil types in the eastern Caribbean. PF of the composite pods and of the individual maturity classes from each treatment was determined. ANOVA, significance of means separation and correlation coefficients were computed. The results from the composite samples were correlated with optimum reaping time (ORT) established from the shellout method. ORT occurred 117–141 DAP. PF rate varied with season and soil type, but PF values for mature pods and for composite pods at ORT were independent of pod size, season and soil type. PF of mature pods was 41.5 ± 1.3% and was significantly different from that of other maturity classes. PF for composite pods at ORT was 38.2 ± 2.2% and was significantly different from PF values before ORT. The results indicated that percent pod-fill could be a reliable indicator of pod and crop maturity for peanuts.Key words: Arachis hypogaea, peanut maturity, pod-fill, maturity index

scholarly journals Determination of Reduced Glutathione and Glutathione S-transferase of Poultry Birds Exposed to Permethrin Insecticide

2012 ◽  
Vol 2 (3) ◽  
pp. 21-24 ◽  
Author(s):  
Ethelbert U. Ezeji ◽  
Ernest A. Anyalogbu ◽  
Tobias N. Ezejiofor ◽  
Justina U. Udensi
Keyword(s):  
Reduced Glutathione ◽  
Glutathione S Transferase ◽  
Poultry Birds

Determination of the Relative Maturity Range for the ‘Georgia-02C’ Peanut Cultivar

2010 ◽  
Vol 37 (2) ◽  
pp. 106-109 ◽  
Author(s):  
W. D. Branch ◽  
J. P. Bostick ◽  
E. J. Williams ◽  
J. P. Beasley
Keyword(s):  
Arachis Hypogaea ◽  
Coastal Plain ◽  
Cultural Practices ◽  
Growing Season ◽  
Pod Yield ◽  
Experiment Station ◽  
Arachis Hypogaea L ◽  
Extension Center

Abstract Six digging dates [127, 134, 141, 148, 155, and 162 days after planting (DAP)] were utilized to determine the relative maturity range for the ‘Georgia-02C’ runner-type peanut (Arachis hypogaea L. subsp. hypogaea var. hypogaea) cultivar. At the Alabama Wiregrass Research and Extension Center in 2005 and at the Georgia Coastal Plain Experiment Station in 2006, 2007, 2008, and 2009, the Georgia-02C cultivar was planted in mid-May each year. Recommended cultural practices with irrigation were used throughout the growing season. Results from these six digging dates on the Georgia-02C cultivar showed significant (P ≤ 0.05) difference across the six digging dates for pod yield and dollar values. The highest yields and highest dollar value returns per hectare were found most consistently at 141–155 DAP during this 5-yr (2005–09) study. The most mature pod profile percentages were found at the 148–162 DAP; whereas, the roasted peanutty flavor was found to have very little differences between the six digging dates. These data would suggest that Georgia-02C has a wide maturity range or harvest window which would allow for more flexibility at digging time.

GERMINACIÓN DE SEMILLAS DE CACAHUATE (Arachis hypogaea L.) UTILIZANDO DIFERENTES DOSIS DE GIBERELINA.

2018 ◽  
Vol 11 (11) ◽  
Author(s):  
S.A. García Muñoz
Keyword(s):  
Arachis Hypogaea ◽  
Arachis Hypogaea L

Objetivo: Evaluar la germinación de cacahuate (Arachis hypogaea L.) mediante el uso de diferentes dosis de ácido giberélico (GA3). Diseño/metodología/aproximación: Se empleó un diseño completamente al azar. Se utilizaron tres tratamientos con 20 repeticiones. Tratamiento 1: 0.05gr/L de ácido giberélico (GA3), Tratamiento 2: 0.10gr/L de ácido giberélico (GA3), Tratamiento 3: 0.15gr/L de ácido giberélico (GA3) y Tratamiento 0: Testigo. Se utilizaron semillas de cacahuate de la variedad Virginia. Los parámetros a evaluar fueron, la altura de plántula, número de hojas, medida de raíz y biomasa.  Las medias fueron comparadas por la prueba de Tukey a un nivel del 5% de confianza. Resultados: Los tratamientos indicaron que el Tratamiento 0 (Testigo) obtuvo un porcentaje de germinación de 85%, siendo mayor que el tratamiento 3 (0.15gr/L de GA3) con un 75% de germinación, sin embargo, el tratamiento 1 (0.05gr/L de GA3) y 2 (0.10gr/L de GA3) presentaron una mejor respuesta al obtener un 95% de germinación cada uno. Limitaciones del estudio/implicaciones: El tratamiento 3 causa efectos negativos en la germinación de la planta. Hallazgos/conclusiones: Es necesario dar seguimiento a la investigación para un mejor control del ambiente y ampliar las dosis de GA3, así como aumentar la velocidad de germinación aplicando 0.15gr/L de GA3.

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