cowpea varieties
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2021 ◽  
Vol 94 ◽  
pp. 101895
Author(s):  
Katamssadan Haman Tofel ◽  
Elias Nchiwan Nukenine ◽  
Gabriel T. Fotso ◽  
Jean Goudoungou Wini ◽  
Eric Wadar ◽  
...  

Author(s):  
Antoine BARRO ◽  
Joseph NANAMA ◽  
Zinmanké COULIBALY ◽  
Zakaria DIENI ◽  
Mirela CORDEA

Vegetable cowpea is eaten mainly fresh, in the form of young, immature pods, tender and sweet like the common bean. However, like cowpea with seeds, vegetable cowpea experience yield losses due to the cowpea aphid-borne mosaic virus (CABMV). This study aims to improve yields through the development of vegetable cowpea varieties resistant to CABMV. The study focused on ten varieties of vegetable cowpea, carried out in a greenhouse at the Kamboinsé research station using a randomized complete block design with three replications, all inoculated with CABMV. The data collection concerned resistance parameters. Mechanical inoculation made it possible to observe various symptoms of CABMV, thus highlighting the existence of variability within the varieties tested. Strong correlations were observed between several variables. Thus, the varieties of vegetable cowpea IT85F-2089-5, UG-CP-8, IT85F-2805-5 and Telma were identified as resistant, because belonging to the low severity classes and having a low value of area under the disease progress curve. On the other hand, the varieties RW-CP-5, UG-CP-6, IT83S-911, niébé baguette grimpant possessing a high severity class were judged to be susceptible. These resistant varieties will thus be able to contribute to the improvement of production and the protection of cowpea resources in Burkina.


2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Vincent Ezin ◽  
Artoche Gloria Christelle Tosse ◽  
Ifagbémi Bienvenue Chabi ◽  
Adam Ahanchede

Cowpea (Vigna unguiculata (L.) Walp.) is an important commodity in West Africa. Its seeds are a valuable source of protein, vitamins, and income for humans. However, cowpea cultivation in Benin faces climatic constraints such as water stress caused by a prolonged absence of rain during the rainy season. Thus, this work aims at selecting cowpea varieties that can be cultivated in times of drought without compromising their yields and yield components. Twenty cowpea varieties were used, including 17 improved cultivars and 3 landraces. The experiment was conducted at the International Institute of Tropical Agriculture in Benin and laid at a split-plot design with four replicates. Each genotype was exposed to three water treatments: fully irrigated control, vegetative stress (when plants were 23 days old, drought stress was imposed for 30 days), and reproductive stress (once the first flowers were observed, water stress was imposed for 30 days). The results showed that photochemical yield, chlorophyll content, and relative water content were reduced under water deficit at the vegetative and reproductive stages. But there were no significant differences in proline content among cowpea varieties. Agronomic traits such as number of days to flowering, number of pods, yield per plant, the weight of 100 seeds, and harvest time showed significant differences under water stress. Overall, the landraces and cultivars including Kpodjiguegue, KVX 61-1, and IT 06-K-242-3 were the most tolerant to drought stress at the vegetative and reproductive stages and could potentially be used in breeding programs to improve drought tolerance of cowpeas.


2021 ◽  
Author(s):  
Awa Sarr ◽  
Amy Bodian ◽  
Mame Codou Gueye ◽  
Badara Gueye ◽  
Ghislain Kanfani ◽  
...  

Abstract Cowpea (Vigna unguiculata) plays a key role in family farming systems in Senegal. It makes an essential contribution to economic, nutritional and food security. Although it is crucial, little is known about how farmers classify the diversity of local varieties or about the social practices associated with them. The aim of this study is to characterize the farming practices associated with growing cowpea in Senegal. Surveys were conducted involving 335 rural farmers living in 37 villages, spread across seven regions that produce cowpea. An average of ten farmers were randomly selected in each village. The results reveal that cowpea is a key feature of cropping systems in the studied area. Our findings highlight the high diversity of local cowpea varieties with 59 local names inventoried. In 75% of cases, the name refers to the seed’s morphology or color. Cowpea production is more diverse in Diourbel and Louga and less diverse in the south. More than half the farmers (57%) acquired their cowpea seeds (early, semi-early and late varieties) outside their village, either from markets, seed suppliers or NGOs. This new understanding of farmers’ expertise in the management of cowpea and its local variability will help to valorise local diversity in breeding programmes.


2021 ◽  
Vol 21 (9) ◽  
pp. 18732-18747
Author(s):  
ER Tawiah ◽  
◽  
Papa Toah Akonor ◽  
P-N T Johnson ◽  
C Oduro-Yeboah ◽  
...  

Cowpea (Vigna unguiculata) is a legume that is cultivated throughout Africa and contributes a significant amount of plant-based protein to human diets. There are many varieties of cowpeas, and these have varying seed characteristics such as shape, size, colour and nutritional properties. The compositional, physico-mechanical, and functional properties of two new cowpea seed varieties were investigated in order to determine their full food-use potentials as well as key parameters for their postharvest machinery for processing, handling, and storage. The proximate composition of the two cowpea cultivars was determined using standard methods. Physico-mechanical analyses carried out were the hundred-seed weight and volume, bulk density, true density, size, aspect ratio, surface area, equivalent diameter, porosity and angle of repose. Functional properties determined were cooking time and water uptake of the grain as well as water and oil absorption, foam capacity and stability, and emulsion capacity and stability of the flour. The Padi-Tuya variety was longer, broader and thicker than Wang Kae. The results showed both varieties to be useful sources of macronutrients. The moisture, fat and fibre in Wang Kae were significantly higher (p<0.05) than Padi-Tuya. However, both cowpea varieties had comparable protein levels of 17.7 g/100 g. The cooking time, hydration capacities and indices of the two varieties were also significantly different (p<0.05), but their swelling capacities, swelling and water uptake indices were comparable. Cooking times were 40 and 62 min for Padi-Tuya and Wang Kae, respectively. The water and oil absorption capacities, as well as the swelling indices, were similar, but their emulsion capacities and stabilities were significantly different (p<0.05) for the flour. Padi-Tuya had a higher foam capacity, but was less stable, than Wang Kae. The physico-mechanical properties determined would aid in the design of cleaning, handling and other processing machinery as well as storage facilities for the new cowpeas. The functional and the compositional parameters would assist in the food formulations.


2021 ◽  
Author(s):  
Mart Dürdane ◽  
◽  
Türkeri Meltem ◽  

Breeding is aimed to breed for varieties that are tolerant against disease, suitable for mechanized cultivation and harvest, and also offer them to the farmers as promising varieties. Since the purpose of legumes production is to obtain grain products of high yield and quality, developing suitable varieties for target regions where they will be grown is an important factor that needs to be considered. This breeding program aimed to develop new variety of recommended legumes varieties for different regions and will stimulate an increase in cultivation area. In Turkey chickpea is traditionally sown in spring and subjected to drought and heat stresses. Chickpea can be sown in autumn with new cultivars but winter-sown chickpea cultivars are not available for highlands. Some abiotic stresses (drought, heat, freezing etc.) and some biotic stresses (ascochyta blight, Fusarium wilt, and weeds) are common and important stresses, whereas nutrient imbalance includ-ing salinity are localized challenges. Lentil is usually traditionally sown in autumn and Central Anatolia green lentil, South Eastern Anatolia red lentil regions in Turkey. As a result of Turkish food legume Program, 48 chickpea, 41lentil, 49 beans, 3 faba beans, 3 pea and 4 cowpea varieties were registered.


2021 ◽  
Vol 22 (10) ◽  
Author(s):  
Anung Wahyudi ◽  
Muhamad Syukur

Abstract. Wahyudi A, Syukur M. 2021. Multi-location evaluation of yield component character and proximate analysis of cowpea grown in Lampung Province, Indonesia. Biodiversitas 22: 4246-4253. Cowpea has the potential to be developed in eastern Indonesia, especially Sulawesi, West Nusa Tenggara, East Nusa Tenggara, and Maluku with an altitude of less than 1000 m above sea level. Cowpea is also able to adapt to acid soils, making it possible to be developed in the dry acid soils of Sumatra and Kalimantan. To identify genotypes of high-yielding cowpea suitable for lowland areas, it is necessary to evaluate the multi-location of superior cowpea genotypes in different agroecology in the region. Multi-site evaluation trials of plant cultivars are of great importance given the obvious inconsistencies in genotype performance across different environments. This study used materials consisting of 4 varieties produced by the IPB University (Albina, Tampi, Uno, Arghavan) and 3 varieties from Balitkabi (KT-1, KT-7, and KT-9). This research is part of the preparation for the release of cowpea new varieties. The statistical analysis of the new varieties (Albina, Tampi, Uno, and Arghavan) compared with control (KT-1, KT-7, and KT-9) showed significant differences in seed productivity, carbohydrate content in old seeds, flowering, harvesting age in young pods and dry seeds. This result indicated that Albina, Tampi, Uno, and Arghavan varieties were potential for the release of new cowpea varieties, especially in the lowland areas.


2021 ◽  
Vol 13 (17) ◽  
pp. 9612
Author(s):  
Beatrice N. Dingha ◽  
Paul C. Omaliko ◽  
Barbara A. Amoah ◽  
Louis E. Jackai ◽  
Deepak Shrestha

Production of pollinator-dependent crops (PDCs) is increasing. However, pollinators are declining partly due to loss of floral resources. There is urgency to mitigate this decline and the potential risks to the production of PDCs and food security. One way is by promoting farming systems that enhance flower-rich habitats. In a two-year study, Pinkeye Purple Hull and Whippoorwill cowpea varieties attractive to pollinators were intercropped with three PDCs (squash, okra, and watermelon). We evaluated whether cowpea intercrop increases the abundance and diversity of pollinators, other beneficial insects, and crop yield, and decreases the abundance of the brown marmorated stink bug (BMSB). Diverse pollinators were recorded in both years for a total of 80,379, representing seven pollinator families (Andrenidae, Apidae, Crabronidae, Formicidae, Halictidae, Tachinidae, and Vespidae) captured in pan traps, six families (Apidae, Crabronidae, Halictidae, Pyralidae, Tachinidae, and Vespidae) from sticky traps, and five pollinator types (bumble bees, carpenter bees, honeybees, butterflies and moths, and wasps) through direct visual count. Pollinator abundance and diversity was highest on the cowpea-intercropped treatments than controls. PDCs intercropped with cowpea recorded more beneficial insects than BMSB. Okra, squash, and watermelon intercrops produced 7%, 27%, and 54% more fruits than the control, respectively. Our findings indicate that intercropping cowpeas with PDCs attracted more and diverse pollinators and resulted in increased crop yield. However, to optimize pollination, factors such as planting dates to synchronize the flowering of both cowpeas and PDCs should be taken into consideration.


2021 ◽  
Vol 2 (5) ◽  
pp. 1-6
Author(s):  
LEN Jackai

The oviposition, growth and development of six populations of Callosobruchus maculatus (IT, PH, UM, MD‐1, MD‐2, MD‐3) from different localities in Nigeria were studied on a resistant (TVu 2027) and susceptible (Ife Brown) cowpea cultivar and four cultivars of African yam bean, Progenies obtained by cross‐mating individuals from the different populations were also studied.. Oviposition was highest in the MD insect beetle population and lowest in the UM population. IT and PH populations had the highest adult emergence and shortest development times on the resistant control. Genomic differences among bruchid populations were confirmed by the Random Amplified Polymorphic DNA (RAPD) fingerprinting technique with PH population being the most distant. All progenies with IT as the female parent also had better emergence and shorter development time than their reciprocal crosses or those involving other populations, but this varied with the fitness of the male parent. The UM population averaged <10% adult emergence on TVu 2027 compared to 71.9 % on the susceptible control, but was better adapted to the AYB (66 % emergence) than were other populations. These results suggest possible existence of ecotypes, of this bruchid species in Nigeria with potentially important implications for the development and deployment of resistant cowpea varieties.


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