Comparative Analysis of Farmers’ Selection Criteria for Cowpea (<i>Vigna unguiculata</i>) Varieties in Niger and Burkina Faso

SummaryComparative analysis of preferences and key criteria for selecting cowpea (Vigna unguiculata L. Walp.) varieties was conducted using the data collected from farmers’ participatory varietal selection (FPVS) activities conducted over 3 years with a total of 2401 farmers (1230 male and 1171 female) in 13 villages in Tougouri department in northern region and Tiéfora department in southern region of Burkina Faso in West Africa. Over the 3 years, farmer criteria for variety selection remained basically stable, but some variations among the regions and years were noticed. Grain yield was the most common and the most important criterion for farmers’ choice in both regions. Farmers in Tougouri (north) put more emphasis on early maturity (90%) and drought resistance (19.7%) as selection criteria than farmers in Tiéfora (south). Farmers in Tiéfora placed statistically significant importance on seed colour and plant type, while farmers in Tougouri did not, and for these selection criteria, there were only slight differences between genders in both areas. Results of stepwise multiple regression indicated that maturity and seed colour in the north, and seed size and seed colour in the south were the most important selection factors for farmers to select cowpea varieties. Improved varieties should have sufficiently good yield to be accepted, but other favoured traits may differ by target region as a reflection of local and regional market demands as well as deep-rooted cultural preferences. Understanding local and regional differences in selection criteria for cowpea varieties is necessary to improve the acceptance of newly released improved varieties. Preferences identified in the participatory activities could inform further development of cowpea breeding strategies for north and south regions of Burkina Faso.

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Genotypic Variation of Mineral Elements and Phytate Levels of Thirty Cowpeas (Vigna unguiculata L. Walp.) Varieties Cultivated in Burkina Faso

Journal of Food Chemistry and Nutrition ◽

10.33687/jfcn.006.01.2343 ◽

2018 ◽

Vol 6 (1) ◽

pp. 13-20

Author(s):

Pierre A.E.D. Sombie ◽

Ibrahim Ouedraogo ◽

Jean Baptiste D.L.S. Tignegré ◽

Adama Hilou ◽

Tinga J. Ouedraogo ◽

...

Keyword(s):

Developing Countries ◽

Burkina Faso ◽

Vigna Unguiculata ◽

Genotypic Variation ◽

Mineral Elements ◽

Human Consumption ◽

Staple Food ◽

Phytate Content

Cowpea is consumed as a staple food in many developing countries. The present study was undertaken to determine the variation in mineral elements and phytate concentrations in 30 cowpeas seeds varieties consumed in Burkina Faso. The composition of the thirty cowpeas seeds in total mineral varies from 5.08 % ± 0.00 to 3.55 % ± 0.08. The genotype CR06-07 showed the high content of total mineral (ashes) and the genotype Kondesyoungo local, the low content of ashes. IT81D-994 showed the high content of iron (7.07 ± 0.057 mg/100g of seeds dw), zinc (4.42 ± 0.012 mg/100 g of seeds dw), magnesium (239.80 ± 1.192 mg/100 g of seeds dw), calcium (123.39 ± 2.31 mg /100 g of seeds dw) and potassium (1201.97 ± 25.66 mg/100 g of seeds dw). Na and Se levels in the seeds showed about 4.5-fold and 7.6-fold variations between the cowpeas varieties. The genotype komcallé showed the high content of sodium (5.45 ± 0.20 mg/100 g of seeds dw) and the genotype KVx 414-22-2 had the high content of selenium (0.006 ± 0.0002 mg/100 g of seeds dw). The phytate content of the cowpeas genotypes varied from 555.61 ± 7.48 for TVU 14676 to 13.50 ± 1.14 mg/100 g of seeds dw for KVx 30-309-6G. The [Phy]/[Fe], [Phy]/[Zn], [Phy]/[Ca] and [Phy] x [Ca]/[Zn] ratios showed that the phytate content might compromise the Fe, Zn and Ca bioavailability in some cowpeas varieties. This study indicates that the cowpeas varieties might be considered as mineral source suitable for animal and human consumption.

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Andalucía en imágenes: un viaje en el tiempo

Revista Internacional de Cultura Visual ◽

10.37467/gka-revvisual.v1.638 ◽

2014 ◽

Vol 1 (1) ◽

Author(s):

Mª Elena Baynat Monreal

Keyword(s):

Comparative Analysis ◽

20Th Century ◽

Selection Criteria ◽

Tourist Attractions ◽

Alexandre Dumas ◽

Siglo Xix ◽

Different Sources

ABSTRACTWe propose a trip along time in three centuries -from the 19th to the 20th century- through the image of Andalusia exported to the travelers in different support media, according to the epoch chosen: etchings in white and black, colour drawings, and paper and digitalised photographs. With this aim in mind we will make a comparative analysis between the illustrations appearing in the French Travel story about Spain by Alexandre Dumas (De Paris à Cadix), from 1847, the pictures and drawings from the book L’Espagne, los provinces du sud, de Séville à Cordoue, written by Octave Aubry and published in 1929, and, finally, the promotional photographs appearing in Andalusia’s official tourism webpage (http://www.andalucia.org/) in 2012. The analysis of the different sources aforementioned, examples from the first half of each century, will lead us to study some coincidences and differences in the image exported to foreign tourists in the different epochs as well as the different selection criteria of the tourist attractions or the prevalence or not of the stereotypes throughout centuries, among other aspects.RESUMENProponemos un viaje en el tiempo de tres siglos desde el siglo XIX hasta el XXI a través de la imagen exportada de Andalucía a los viajeros en diferentes soportes, según la época elegida: grabados en blanco y negro, dibujos en color y fotos en papel o digitalizadas. Para ello realizaremos un análisis comparativo entre las ilustraciones aparecidas en el relato de viajes francés sobre España de Alexandre Dumas (De Paris à Cadix) de 1847; las fotos y los dibujos del libro L’Espagne, los provinces du sud, de Séville à Cordoue escrito por Octave Aubry y publicado en 1929; y, para finalizar, las fotos promo-cionales aparecidas en la página web oficial de turismo de Andalucía (http://www.andalucia.org/) en 2012. El análisis de estas diferentes fuentes citadas, ejemplos de la primera mitad de cada siglo, nos servirá para estudiar algunas coincidencias y diferencias en la imagen exportada a los turistas extranjeros en las diferentes épocas así como los diversos criterios de selección de los atractivos turísticos o el mantenimiento o no de los estereotipos a lo largo de los siglos, entre otros aspectos.

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