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Ahumada, M., Cantwell, M. (1996) Postharvest studies on pepino dulce ( Solanum muricatum Ait.): maturity at harvest and storage behavior. Postharvest Biol. Tec. 7, 129

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Solanum sect. Solanum (Maurella) in South America. — Kew Bull. 27 (1): 79–114. Edmonds J. M. A synopsis of the taxonomy of Solanum sect. Solanum (Maurella) in South America

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of 2n gametes and endosperm balance number in the origin and evolution of polyploids in the tuber-bearing Solanums . Genetics , 163 , 287–294. Peloquin S. J. The role

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Balaguera-Lopez, H. E., Cardenas-Hernandez, J. F. and Alvarez-Herrera, J. G. (2009): Effect of gibberellic acid (GA 3 ) on seed germination and growth of tomato (Solanum lycopersicum L.). - Acta Hortic. 821

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11 Black, W., Mastenbroek, C., Mills, W. R. and Peterson, L. C. (1953): A proposal for an international nomenclature of races of Phytophthora infestans of genes controlling immunity in Solanum demissum derivatives

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The composition of eggplant (Solanum melongena L.) leaf cuticular waxes was investigated. Chemical composition was determined as the first step in recognizing the importance to insect pest resistance of eggplant leaf surface chemistry. Waxes were extracted by dipping leaves into dichloromethane for 40 s. Relatively large samples were then fractionated by ‘flash chromatography’ on silica gel. Compounds were identified on the basis of their mass spectra from GC-MS analysis and retention data from GC-FID analysis, and quantified on the basis of peak areas from GC-FID analysis. Straight-chain alkanes and methyl-branched alkanes were the most abundant wax components. Minor quantities of esters of fatty acids with triterpene and aliphatic alcohols, free triterpene and aliphatic alcohols, sterols, and free fatty acids were also present on the eggplant leaf surface. This method is suitable for analysis of complex mixtures of plant cuticular lipids. It is also applicable to separation of samples for biological tests on insects.

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The present study was carried out for developing an efficient in vitro callus induction and plant regeneration system in four different tomato genotypes (Solanum lycopersicum Mill., previous name: Lycopersicon esculentum), Advantage II, Edkawy, Castle Rock and Super Strain B, using hypocotyl and cotyledon explants. The effects of two cytokinins, BA (benzyl adenine) and Kin (kinetin), on callus induction and plant regeneration frequency were investigated when added to MS medium in combination at varying concentrations. All concentrations of the two cytokinins were suitable for callus induction and plant regeneration. The frequency of callus induction and plant regeneration from both cotyledon and hypocotyl explants reached 100% for all tested genotypes. Cotyledons produced a higher average number of shoots per explants than hypocotyls for all the genotypes in the five concentrations of combined cytokinins. The average number of shoots per explant in Super Strain B was found to be the highest (42 and 60 for the hypocotyl and cotyledon explants, respectively). Supplementing MS medium with 1.0 mg L−1 kinetin and 1.0 mg L−1 benzyl adenine was found to be optimum for producing the highest number of shoots per explant from hypocotyls and cotyledons in the tomato genotypes investigated. The proposed medium showed a significant superiority over the reference media.

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Acta Alimentaria
Authors: J. Montiel-Ventura, J.J. Luna-Guevara, M.A. Tornero-Campante, A. Delgado-Alvarado and M.L. Luna-Guevara

-Murrieta , F.E. & Acosta-Olea , R. ( 2011 ): Estudio de la cinética de secado de jitomate ( Solanum lycopersicum L.) (Study of tomato ( Solanum lycopersicum L.) drying kinetics) . Científica , 15 , 125 – 130

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Summary

A simple, selective, sensitive, and precise high-performance thin-layer chromatographic technique was followed to determine the diversity within accessions of Solanum nigrum. Fruit, stem, leaf, and root samples extracted in methanol were used to quantify withanolide A and withaferin A. Significant difference has been detected among the different plant parts. The maximum amount of withaferin A has been found to be present in the leaf sample (71.65 ± 2.86 mg g−1 DW), followed by the stem sample, while the least amount of withaferin A has been detected in the mature fruit sample (5.97 ± 1.91 mg g−1 DW).

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An ingredient of ‘Dasamoola’ and ‘Laghupanchamoola’ group of drugs, the source of ‘Brihati’ has been controversial. Although the dried root of Solanum anguivi is considered as the source of the drug ‘Brihati’ according to the Ayurvedic Pharmacopoeia of India, closely related and morphologically similar few species like Solanum torvum, Solanum melongena, Solanum incanum, and Solanum insanum are known as its substitutes. In the present study, a high-performance thin-layer chromatography (HPTLC) method was developed and validated for the chemoprofiling and quantitative estimation of glycoalkaloid solamargine from 5 species of the genus Solanum as well as market samples. The developed method was precise, accurate, robust, specific, and linear. The results showed that S. incanum has the highest content of solamargine, followed by S. insanum. Out of the 9 market samples analyzed, solamargine was detected only in 3 samples. Unsupervised pattern recognition techniques, such as principal component analysis and hierarchical cluster analysis, were used to analyze the complex fingerprint patterns and to predict the grouping of samples. The method clearly segregated the field and market samples. Our study is the first attempt to evaluate the drug ‘Brihati’ and the market samples using HPTLC.

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