The availability of secondary metabolites in various plant parts can be influenced qualitatively and quantitatively by managing ecological factors or farming practices. Purpose of this study was to determine the impact of organic and mineral fertilization on the content of phenolic compounds and antioxidant activity in fruit of the tomato Mongal F1 variety. Experimentation was carried out in a randomized block factorial design. Results of study revealed that plant treated by organic fertilizers have 16.36± 0.07mg Trolox Equivalent (TE)/100g fresh tomato (ft) antioxidant activity and 6.96± 0.63mg Gallic Acid Equivalent (GAE)/100g ft total phenols content while the plant treated by mineral fertilizer have 15.57± 0.05 mg TE/100g ft for antioxidant activity and 6.09± 0.13mg GAE/100g ft for total phenols content. Furthermore, it was reported that, as compared to mineral fertilization, organic fertilization significantly increases the antioxidant activity and phenolic compounds production in Mongal F1 tomato variety. This increase is probably due to the availability of various major and minor elements in organic fertilizer contrary to mineral fertilizer which has only three major elements, nitrogen, phosphorus, and potassium. 79 days after transplanting, fruit ripping has no obvious effect on the accumulation of these compounds.
The concentration of secondary metabolites can be influenced qualitatively and quantitatively by ecological factors and farming practices. The purpose of this study was to determine the impact of organic and mineral fertilization on physical characteristics and the content of chemical and biochemical compounds of the fruits of the tomato var. Mongal F1. Physical, chemical and biochemical characterizations of tomato samples were carried out from samples collected from control, organic and mineral fertilized plants, to assess the nutritional potential according to fertilization. Samples collected from the organic fertilizer had pH values of 4.21 ± 0.01 corresponding to measurable acidity of 8.47 ± 0.06g malic acid /100g Fresh Tomato (FT), dry matter of 4.18±0.02/100g FT and total ash content of 0.38±0.01/100g FT. The contents of fats, proteins are respectively 2.28 ± 0.01 and 0.70± 0.02 mg/100g FT, totals sugar value of 2.83± 0.02 mg/100g FT. For mineral fertilization, the samples had pH values of 4.16 ± 0.01 corresponding to a measurable acidity of 8.10 ± 0.12g malic acid /100g FT, values of dry matter 3.82 ± 0.02/100g FT and totals ash content of 0.37 ± 0.01. The contents of fats and proteins are respectively 0.27 ± 0.01 and 0.64 ± 0.01 mg/100g FT with totals sugar value of 2.56 ± 0.01 mg/100g FT. Result of study revealed that organic fertilization can increase the concentration of secondary metabolites production in tomato var. Mongal F1 than mineral fertilization. This increase may be probably due to the availability of various major and minor elements in organic fertilizer contrary to mineral fertilizer which has only three major elements, Nitrogen (N), Phosphorus (P) and Potassium (K). Globally fruit ripping has shown a positive effect on the accumulation of fats, proteins and total sugar.
Objectif : L'objectif de cette étude est de connaître les techniques endogènes de lutte contre les pestes et les usages que les populations font des plantes en société Mossé au Burkina Faso. Méthodologie et résultats : La présente étude s'est basée sur des interviews auprès des populations locales. Les données des enquêtes ont été saisies puis traitées sur Excel 2010 et sur JMP 8 au seuil de 0,05. Il ressort des enquêtes que les populations utilisent des plantes pour lutter contre les insectes et les tiques dans la conservation des graines de céréales et de légumineuses, les parasites des animaux et les insectes vecteurs de maladies. Vingt-quatre (24) espèces au total ont été recensées. En plus des plantes locales, les populations utilisent l'exposition au soleil, l'enfumage, des matières inertes et la conservation en atmosphère confinée. Conclusion et application : Cette étude a permis de connaître les types d'usages traditionnels que les Mossé font des plantes. Ces techniques traditionnelles permettraient de faire l'économie des méthodes modernes, en l'occurrence les méthodes chimiques qui ont déjà montré leurs effets sur l'environnement ; d'où la nécessité de promouvoir et de valoriser ces méthodes traditionnelles.
The study of thirty sorghum varieties used for food in Burkina Faso showed a relationship between tannin level and utilization of sorghum grain. High tannin level varieties (more than 0.2%) are generally used for local alcoholic drink, instead low tannin level varieties (under 0.2%) are used for cooking and for non fermented drinks.
Effet des extraits du thé de Gambie (Lippia multiflora Moldenk) et du neem (Azadirachta indica A. Juss.) sur Helicoverpa armigera et les Thrips de la tomate. 8930 Effet des extraits du thé de Gambie (Lippia multiflora Moldenk) et du neem (Azadirachta indica A. Juss.) sur Helicoverpa armigera et les Thrips de la tomate (Lycopersicon esculentum Mill.
The propagation of Lannea microcarpa (an African wild grape) by seeds causes considerable variation in the offspring, making very difficult the selection, and multiplication of superior genotypes of interest. The species is also very difficult to propagate using conventional asexual technique. Therefore, micro cutting explants of young shoots from seedlings of Lannea microcarpa were grown in vitro on semi-solid Woody Plant Medium (WPM) supplemented for each experiment with three cytokinins at seven different concentrations for shoot formation and development. The cytokinins tested were 2iP (2-isopentenyladenine), TDZ (Thidiazuron), Zea (Zeatin) plus 0.05 µM IAA in the medium. Two subcultures were performed at 35 days interval after the initial in vitro culture establishment. Shoot development occurred primarily from axillaries buds formation that was greatest on a medium containing 56 µM of 2iP (plus 0.05µM IAA), with an average number of 4.5 ± 0.3 shoots per single node cutting and an average length of 4.7 ± 0.7 cm. After removal from culture, the shoots were induced rooting using IAA (Indole-3-Acetic Acid) and IBA (1H-indole-3-butanoic acid) at seven different concentrations. Shoots rooted in response to treatment with auxins (IBA and IAA) in the WPM medium and also in talc. The WPM medium produced an average number of 7 ± 0.5 roots per cutting at 32 µM IBA and with nearly 4.5 ± 0.7 cm in length. But the 1.5% of IBA in talc gave a better result with a higher number of 7.5 ± 0.4 roots per cutting with 5.5 ± 0.6 cm in length. The objective of this study is to develop a reproducible protocol for the rapid propagation of Lannea microcarpa in a semi-solid WPM medium supplemented with various concentrations of hormones.
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