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Journal articles on the topic 'Yam Varieties'

Author: Grafiati

Published: 5 June 2025

Last updated: 2 August 2025

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1

Okeke, Chineze, and Sylvester Oluka. "A study of Aerodynamic properties of Yam flour." Poljoprivredna tehnika 46, no. 2 (2021): 11–18. http://dx.doi.org/10.5937/poljteh2102011g.

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The aerodynamic properties of five varieties of Yam namely: white yam, purple yam, three leaves yam, water yam and yellow yam were investigated under oven drying methods at 33oC. The dried yams were milled to flour and were taken to laboratory to determine their aerodynamic properties with respect to pneumatic conveying of the yam flours. The yam flour varieties recorded terminal velocity range of 1.38 to 1.60 m/s. Drag coefficient of 0.47 and Reynolds number varying from 0.63 to 0.97x10-5 kgm-2 /s. The analysis of variance conducted on the effect of yam varieties on the aerodynamic properties

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2

Boadu, P., R. Aidoo, K. Ohene-Yankyera, et al. "Analysis of seed yam varieties, sources and quantity demanded by farmers in major yam producing districts in Ghana." Ghana Journal of Agricultural Science 54, no. 2 (2019): 45–57. http://dx.doi.org/10.4314/gjas.v54i2.5.

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The study analysed the varieties, sources and quantities of seed yam demanded by farmers for cultivation in order to inform policies aimed at ensuring adequate supply of quality seed yam of desirable varieties at an affordable price to boost yam productivity for improved income and livelihoods. A structured questionnaire was administered to 380 randomly selected yam farmers in three major yam producing districts in Ghana in 2015. The data analysis was done using STATA statistical software. The study identified Pona/Punjo, Lariboko, Asana, Afebetuye, Dente, Olondo and Kparinjo as the yam variet

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3

Achoja, Felix Odemero, Emmanuel Chukudinife Enujeke, Oraye Dicta Ogisi, and Rebecca Tega Overehirha. "Multinomial Regression Analysis if Yam (Dioscorea Spp.) Consumers’ Preferences and Varietal Diversification Pattern in Nigeria." Asian Journal of Agriculture and Rural Development 10, no. 2 (2020): 698–707. http://dx.doi.org/10.18488/journal.ajard.2020.102.698.707.

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Multinomial regression analysis of yam consumers’ preference and varietal diversification in the yam production system in Nigeria was the thrust of this investigation. Five major yam farming communities were sampled randomly to get 200 respondents (suppliers and consumers) of yam. Parametric and non-parametric tests were employed to analyze the primary data collected with the questionnaire. The result indicates that white yam (Dioscorea rotundata) is the dominant variety among consuming households. The majority of the respondents prefer selling of white yam (76%) followed by water yam (13%) an

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4

Zeng, Xiaoxuan, Dahui Liu, and Luqi Huang. "Metabolome Profiling of Eight Chinese Yam (Dioscorea polystachya Turcz.) Varieties Reveals Metabolite Diversity and Variety Specific Uses." Life 11, no. 7 (2021): 687. http://dx.doi.org/10.3390/life11070687.

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The Chinese yam (Dioscorea polystachya Turcz.) is an underutilized orphan tuber crop. However, in China it has been used in traditional medicine and food for centuries due to the presence of high starch, protein, fiber, and biologically active compounds. Knowledge on the metabolomic profiles of Chinese yam varieties is needed to explore the underutilized metabolites and variety specific uses. Here, the metabolome of eight Chinese yam varieties that are cultivated in different Chinese regions was profiled. A total of 431 metabolites belonging to different biochemical classes was detected. The m

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5

Omale, P.A., A. Iorhemba, and S. Baba. "Determination of Stress Relaxation of Three Varieties of Benue State Grown Yam Tubers." European Journal of Advances in Engineering and Technology 8, no. 3 (2021): 9–18. https://doi.org/10.5281/zenodo.10648793.

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<strong>ABSTRACT</strong> The determination of stress relaxation of three varieties of Benue state grown yams was carried out using the universal testing machine to study the behaviour of the named varieties; bitter yam, water yam and white yam tubers under loading. The yam tubers were cut into cubes of 2700mm<sup>3 </sup>and the stress relaxation was observed under the application of constant stress and constant strain. It was observed that the stress relaxation across the three varieties of yams ranged from 0.0370460-0.0983780 (Mpa) with water yam (Dioscoreaalata) having the highest value of

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6

Effah-Manu, Liticia, Faustina D. Wireko-Manu, Jacob K. Agbenorhevi, Busie Maziya-Dixon, and Ibok N. Oduro. "Gender-Disaggregated Consumer Testing and Descriptive Sensory Analysis of Local and New Yam Varieties." Foods 12, no. 3 (2023): 537. http://dx.doi.org/10.3390/foods12030537.

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Gender-disaggregated sensory evaluation has become an essential element that could enhance breeding activities by increasing the adoption of new varieties. The effect of age, sex and geographical location on descriptor preferences for boiled and pounded yam were studied using descriptive and consumer testing. Attributes with definitions and measurement scales were used to generate lexicons for boiled and pounded yam. Analytical tools employed for the inferential statistics were the independent t-test, analysis of variance, Kruskal–Wallis test, Mann–Whitney test and relative importance index (R

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7

Backian, Grace S., Betty T. Gayao, and Dalen T. Meldoz. "Greater Yam (Dioscorea alata) Varieties Grown by the Ethno-linguistic Groups in Northern Philippines." Mountain Journal of Science and Interdisciplinary Research (formerly Benguet State University Research Journal) 76 (August 26, 2016): 93–102. https://doi.org/10.70884/mjsir.v76i0.10.

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This study was done to document indigenous greater yam varieties and wild yam species among the Aeta, Bago, Biga-Kalinga, Bugkalot, Buhid-Mangyan, Ibaloi, Isneg, Ivatan, Iyattuka, Kalanguya, Kankana-ey, Applai-Kankana-ey, Tingguian and two other major groups, the Kapampangans and Ilocanos. Economic, environmental and climatic conditions are changing diets and livelihoods such that indigenous greater yam varieties are at risk of disappearing, hence this documentation. Secondary data, interview, workshops and field observations were used to document information. Seventy-seven indigenous greater

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8

Gao, Yuanli, Yanfang Zhang, Jinxin Wang, et al. "Transcriptome Analysis Reveals the Accumulation Mechanism of Starch in Chinese Yam (Dioscorea opposite Thunb.) Tubers Using RNA-Seq and Iso-Seq." Science of Advanced Materials 14, no. 2 (2022): 305–18. http://dx.doi.org/10.1166/sam.2022.4205.

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The starch composition of tubers affects the quality and yield of yam, and it is of great significance to deeply investigate the mechanism of starch accumulation in yam. In this study, two yam varieties with significant differences in starch content, Bikeqi (Dioscorea opposita Bikeqi) and Dahechangyv (Dioscorea opposita Dahechangyu), were used as materials. The transcriptome of tubers from seven developmental stages were sequenced using RNA-seq and Iso-seq. Differential genes closely contacted with the metabolism of starch and sucrose were screened and the functions were analysed. The results

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9

Bi, Manju Evelyn, Ignatius Nkendem Azeteh, Theresa Feka, and Khumbah Dominic Njualem. "Efficacy of Plant Extracts on Management of Anthracnose Disease of Yam (Dioscorea spp.) in Bamenda, Cameroon." Journal of Biology and Life Science 16, no. 2 (2025): 73. https://doi.org/10.5296/jbls.v16i2.22701.

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Anthracnose is a devastating disease in yam (Dioscorea spp)-growing regions, causing heavy yield losses. This study evaluated the efficacy of plant extracts as alternatives to chemical fungicides used to control yam anthracnose. Yam varieties in five species were used to establish an experiment in a split plot randomized block design at the Research Farm of College of Technology, University of Bamenda from March to September 2023. Scent leaf (Ocimum gratissimum) infusion, neem (Azadirachta indica) seed oil and chemical fungicide (mancozeb) were used to treat yam varieties at 2-weekly interval

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SIVAKUMAR, P. SETHURAMAN, M. NEDUNCHEZHIYAN, S. PARAMAGURU, and R. C. RAY. "PRODUCTION SYSTEM-SPECIFIC DIFFERENCES IN FARMERS' DEMAND FOR GREATER YAM (DIOSCOREA ALATA) VARIETAL ATTRIBUTES IN ORISSA STATE, INDIA." Experimental Agriculture 45, no. 4 (2009): 469–82. http://dx.doi.org/10.1017/s0014479709990433.

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SUMMARYGreater yam (Dioscorea alata), a popular crop in India, is cultivated widely in Orissa state, India. In spite of the availability of several improved varieties, farmers preferred the local landraces. An investigation was carried out to identify whether the varietal preferences of yam farmers in two production systems, subsistence and commercial, were different. While the subsistence farmers demanded the yam varieties adaptable to a wide range of soils, the commercial farmers preferred the anthracnose-resistant cultivars. This study demonstrated that the farmers' varietal preferences wer

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11

Afolabi, F. O., A. I. Lawal, and A. O. Adegbite. "Physicochemical and sensory attributes of some selected varieties of white yam (<i>Dioscorea rotundata</i>)." Journal of Agriculture and Food Sciences 21, no. 1 (2023): 114–27. http://dx.doi.org/10.4314/jafs.v21i1.8.

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The physicochemical and sensory properties of five varieties of Dioscorea rotundata were investigated for their potential end uses. The water absorption capacity, water binding capacity, swelling power, solubility index, pH, and pasting properties of flour processed from the yam tubers were determined. Also, the sensory attributes of pounded yam produced from the tubers were evaluated. In terms of colour, Gbongi had the highest whiteness value (82.27). Lasinrin had the highest moisture content (39.47 %) and swelling capacity (6.11g/g), Efuru had the highest water absorption capacity (132.50%)

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Backian, Grace S., Betty T. Gayao, and Dalen T. Meldoz. "Informal Seed System on Greater Yam (Dioscorea alata):." Mountain Journal of Science and Interdisciplinary Research (formerly Benguet State University Research Journal) 80, no. 1 (2020): 40–47. https://doi.org/10.70884/mjsir.v80i1.263.

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Indigenous knowledge on variety, seed selection and seed-related practices is very important in the maintenance of greater yam diversity. However, baseline information on indigenous production, storage, or exchange of traditional greater yam varieties, and planting materials is very limited, especially among the indigenous people of the Northern Philippines. Hence, this documentation using secondary data, key informant interviews, field observation, and photo documentation to validate gathered information. Indigenous farmers’ technique on the utilization and management of cut setts that weigh

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13

Loko, Y. L., A. Dansi, M. Tamo, et al. "Storage Insects on Yam Chips and Their Traditional Management in Northern Benin." Scientific World Journal 2013 (2013): 1–11. http://dx.doi.org/10.1155/2013/484536.

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Twenty-five villages of Northern Benin were surveyed to identify the constraints of yam chips production, assess the diversity of storage insects on yam chips, and document farmers' perception of their impacts on the stocks and their traditional management practices. Damages due to storage insects (63.9% of responses) and insufficiency of insect-resistant varieties (16.7% of responses) were the major constraints of yam chips production. Twelve insect pest species were identified among whichDinoderus porcellusLesne (Coleoptera, Bostrichidae) was by far the most important and the most distribute

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14

Otegbayo, Bolanle Omolara, Abiola Rebecca Tanimola, Julien Ricci, and Olivier Gibert. "Thermal Properties and Dynamic Rheological Characterization of Dioscorea Starch Gels." Gels 10, no. 1 (2024): 51. http://dx.doi.org/10.3390/gels10010051.

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Yam (Dioscorea. sp.) is an edible starchy tuber with potential for being a commercial source of starch for industrial purposes, but yam starch is underutilized. The dynamic oscillatory and thermal properties of yam starches from sixteen varieties each of Dioscorea. rotundata, Dioscora. alata, Dioscorea. bulbifera and one variety of Dioscorea. dumetorum from Nigeria were studied to determine their potential for industrial utilization. The storage modulus, loss modulus, damping factor and complex viscosity as a function of frequency (ω) of the dioscorea gels, as well as the onset temperature (To

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15

Stuart, Esmé, Asrat Asfaw, Patrick Adebola, et al. "Yam seed system characteristics in Nigeria: Local practices, preferences, and the implications for seed system interventions." Outlook on Agriculture 50, no. 4 (2021): 455–67. http://dx.doi.org/10.1177/00307270211058209.

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Yam is an important food and cash crop in Nigeria. The seed system is mostly farmer-based and its challenges and opportunities are not well documented. This study reports results of surveys, interviews, focus group discussions and participant observations that describe local practices characterizing yam cultivation and the farmer-based seed system in five states in Nigeria. Our findings show that ware and seed yam are dynamic and highly commercialized goods in Nigeria. There is a high demand for, and a high turn-over of, seed yam. The reasons for the high demand are the low multiplication rate

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16

Pelemo, Olugboyega Success, Ossai Chukwunalu Okolie, Amudalat Bolanle Olaniyan, et al. "Effects of Variety and Sett Weights on Sprout Emergence and Seed Tuber Yield in Dioscorea alata L. and Dioscorea rotundata Poir." Crops 5, no. 3 (2025): 38. https://doi.org/10.3390/crops5030038.

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Yam is a staple crop in Africa that is constrained by its low multiplication rate. This results in a short supply of seed tubers, which is a challenge to increased production. This study assessed the influence of different minisett weights (10, 20, 30, 40, and 50 g) on tuber production and seed categorization in twelve Dioscorea rotundata and four Dioscorea alata varieties over two planting seasons in a Randomized Complete Block Design (r = 3). The yield parameters were collected and analyzed using ANOVA. The effects of varieties, the minisett weight (SW), and the variety × SW interaction were

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17

Vaishnavi, Vijayan Venugopal, Saminathan Chockalingam, M. R. Suchitra, and Hanmugananth Elayaperumal. "Analysing Indian Yam (Dioscorea) Varieties Based on Starch Viscosity: A Comparative Scientific Study." International Journal of Environmental Sciences 11, no. 8s (2025): 500–504. https://doi.org/10.64252/2m3svv76.

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Background: yam (dioscoreae) stands as a crucial crop, rich in fiber and starch, widely utilized in food and pharmaceutical industries. This research delved into three indian yam cultivars: potato, elephant yam, and cassava. Aim: the aim of the present study is to isolate the starches from potato, elephant yam, and cassava and their viscosity properties. Objective: to isolate starches from potato, elephant and cassava starch by using alkaline extraction. To evaluate the viscosity properties of the isolated starches using brookfield viscometer. Methods and methodology: The three different yams

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18

Wumbei, Abukari, Judith Kania Asibi Bawa, Mamudu Abunga Akudugu, and Pieter Spanoghe. "Absence of Effects of Herbicides Use on Yam Rots: A Case Study in Wulensi, Ghana." Agriculture 9, no. 5 (2019): 95. http://dx.doi.org/10.3390/agriculture9050095.

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Yam farmers in Ghana have, over the years, used herbicides for weed control, particularly glyphosate. Although this has been helpful to them, there are complaints and concerns, among the yam farmers and a section of the public, that the yam tuber rots easily under the use of herbicides. This study, therefore, was set up at the field level to investigate the possibility of herbicides use causing yam rot. Two yam varieties, “laribako” and “olodo”, were grown under the conditions of chemical weed control (use of glyphosate) and manual weed control in three replicate sites in Wulensi in the Nanumb

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19

REMYA, K., and G. SUJA. "Conservation agriculture in elephant foot yam (Amorphophallus paeniifolius) + banana (Musa AAB) system for higher productivity and profit: Results of an on-farm validation trial." Indian Journal of Agricultural Sciences 90, no. 8 (2020): 1402–10. http://dx.doi.org/10.56093/ijas.v90i8.105904.

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Field experiment was conducted in a farmer‘s field at Alathara, Kattela, Thiruvananthapuram, Kerala, during 2016-2017, to evaluate and identify varieties of elephant foot yam [Amorphophallus paeniifolius (Dennst. Nicolson)] adapted to conservation agriculture, to validate the resource conservation technologies for elephant foot yam in banana (Musa ABB) (var. Nendran) based system and to assess its impact on growth, yield, soil physico-chemical-biological properties, system productivity and profitability. Four varieties of elephant foot yam (Gajendra, Sree Padma, Sree Athira and Peerumade Local

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Backian, Grace S., Betty T. Gayao, and Dalen T. Meldoz. "Lesser Yam (Dioscorea esculenta) Grown and Knowledge Transfer Among Indigenous People in Northern Philippines." Mountain Journal of Science and Interdisciplinary Research (formerly Benguet State University Research Journal) 82, no. 2 (2023): 21–32. https://doi.org/10.70884/mjsir.v82i2.330.

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Lesser yam (D. esculenta) or tugui, is a perennial crop cultivated to supplement human food and cash needs. Reference data on indigenous varieties is limited. Hence, this documentation utilizes secondary data, key informant interviews, and field observation to determine varieties known or cultivated and the retention or loss of traditional knowledge regarding this crop among 13 indigenous peoples (IPs) in the Northern Philippines. The IPs named 25 cultivated and four wild species, 12 of which were classified as plenty, 11 as few, and two as rare or endangered. The Aeta, the Biga-Kalinga, the B

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Mondo, Jean M., Paterne A. Agre, Alex Edemodu, et al. "Floral Biology and Pollination Efficiency in Yam (Dioscorea spp.)." Agriculture 10, no. 11 (2020): 560. http://dx.doi.org/10.3390/agriculture10110560.

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Yam (Dioscorea spp.) is a monocotyledonous herbaceous vine cultivated for its starchy underground or aerial tubers in the tropics and subtropics. It is an allogamous and polyploid species that reproduces by both sexual and asexual mechanisms. However, many of the landrace cultivars, including most of the popular varieties, reproduce exclusively by vegetative propagation (planting the tubers). These varieties are either sterile or produce sparse and irregular flowering with high flower abortion rate, low fruit and seed set. Production of crossbreed seeds for genetic improvement and for maintain

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Gebre, Tizazu. "Yam landrace diversity and distribution in Basketo and Dera Malo Districts, Southwest Ethiopia." OMO International Journal of Sciences 2, no. 2 (2019): 45–58. http://dx.doi.org/10.59122/1342815.

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Smallholder farmers grow diverse crop landraces in their fields which contribute to the capacities of agricultural systems to adapt to environmental changes through maintaining broad genetic variations of crops, and there by allowing evolution of crops to continue. This study, therefore, was conducted on yam landrace diversity and distribution in two districts in South West Ethiopia, namely Basketo and Deramalo districts of which eight yam growing communities (four from each district) were included with the purpose of finding out the diversity and distribution of yam farmers’ landraces on cult

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Majekodunmi, Omodamiro Rachel, Ojimelukwe P.C, Asiedu R, and Etudaiye H.A. "EFFECT OF FUSARIUM NYGAMAI INFECTION ON THE CHEMICAL COMPOSITION OF FLOUR FROM TWO YAM VARIETIES." JOURNAL OF ADVANCES IN CHEMISTRY 12, no. 1 (2015): 3881–87. http://dx.doi.org/10.24297/jac.v12i1.842.

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Yams (Dioscorea spp) are among the oldest food crops. It is estimated that after six months of storage up to 56% of the crop is lost to rot. In Nigeria, fresh yam tubers are used for production of Elubo (yam flour) for preparation of amala, as it is called among the Yoruba in Western Nigeria, and akwunaji in the east of the River Niger. Many researchershave emphasized the importance of microbial rotting in causing storage losses. This study evaluated the effect of yam rot on the nutritional values of Fusarium infected yam tubers.Tubers from two yam (Dioscorea rotundata Poir.)varieties-Nwopoko

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PATRICK EJIKE, Ide, Ugwuanti-nnadi OBİAGELİ, and Eje Brendan EKETE. "Effect of Fermentation on Drying Characteristics of Three Varieties of Trifoliate Yam." Turkish Journal of Agricultural Engineering Research 3, no. 1 (2022): 181–93. http://dx.doi.org/10.46592/turkager.1093126.

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This study determined the effect of fermentation on drying characteristics of trifoliate yam varieties (white, yellow and deep-yellow trifoliate yam). Thin layer drying method was adopted using oven dry method at constant drying temperature of 700C with air velocity of 2.35 m s-1 and relative humidity 35%. The unfermented samples shoed lower values of drying constant than the fermented samples. The drying constant of unfermented samples of Trifoliate Yam A, B and C (A= Deep-Yellow, B= White, C= Yellow) were -0.729, 1.3972 and 0.2787, respectively. While, the drying constant of fermented sample

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Afoakwa, EO, D. Polycarp, AS Budu, H. Mensah-Brown, and E. Otoo. "Variability in biochemical composition and cell wall constituents among seven varieties in Ghanaian yan (Dioscorea SP) germplasm." African Journal of Food, Agriculture, Nutrition and Development 13, no. 59 (2013): 8106–27. http://dx.doi.org/10.18697/ajfand.59.13280.

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This work characterized the most cultivated and consumed yam ( Dioscorea ) cultivars within the Ghanaian yam germpla sm based on their biochemical and cell wall constituents to assess their potential alternative food and industrial processing applications. Samples were analyzed for their biochemical composition - starch, amylose, amylopectin, total sugars, reducing sugar s and non- reducing sugars along the head, middle and tail regions of each tuber using standard analytical methods. Cell wall constituents - acid detergent fibre, neutral detergent fibre, acid detergent lignin, cellulose and h

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Amar, Aini Auliana, Feri Kusnandar, and Slamet Budijanto. "Karakteristik Fisikokimia Tepung Ubi Banggai dan Aplikasinya Dalam Beras Analog." Jurnal Mutu Pangan : Indonesian Journal of Food Quality 8, no. 1 (2021): 43–52. http://dx.doi.org/10.29244/jmpi.2021.8.1.43.

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Banggai yam (Dioscorea sp) has many varieties, which is locally cultivated and consumed by people in Banggai, Central Sulawesi. Banggai yam can be processed into flour and applied as an ingre-dient in analogue rice. This study aimed to evaluate the physical and chemical composition, total phenol and antioxidant activity of banggai yam flours, and the physical properties, total phenol and antioxidant activity of their analogue rice. Five varieties of banggai yams (Harum, Banggai, Pasus, Doso, and Penus) were compared. Banggai yam flours were composed of moisture (12.21-12.74%wb), ash (2.18-2.75

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Bolaji, Morolake, Raphael Olarenwaju Babatunde, and Olubunmi Abayomi Omotesho. "Assessment of The Technical Efficiency and Cost and Returns on Seed Yam Farms in North-Central." International Journal on Food, Agriculture and Natural Resources 4, no. 3 (2023): 37–42. http://dx.doi.org/10.46676/ij-fanres.v4i3.117.

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Achieving maximum output with a minimum level of resources has been a major discourse in recent years mostly in Nigeria’s seed yam production. Thus, the study evaluated the technical efficiency of the CAY- and NRCRI - seed yam farm and the costs and returns to seed yam production of CAY- and NRCRI - seed yam farms. The study adopted a quantitative research approach. Similarly, a multistage sampling method was used to 283 seed yam farmers. Descriptive statistics, cobb douglas stochastic frontier production function model and gross margin analysis were used for the study. The findings of the stu

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KOUAKOU, Amani Michel, Konan Evrard Brice DIBI, Boni N'ZUE, Brice Sidoine ESSIS, and Goli Pierre ZOHOURI. "Dichotomous key determining varietal groups of yam species Dioscorea alata L." Greener Journal of Agricultural Sciences 5, no. 5 (2015): 190–203. https://doi.org/10.15580/GJAS.2015.5.082415121.

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Yam is an important food crop in Côte d'Ivoire. Nevertheless, its production is facing many constraints including the inability to distinguish cultivated varieties from one another. Thus, different varieties and species are designated by the same names from one region to the other and vice versa, the same varieties are called differently. The absence of major descriptors, which are easy to use is the main cause of this confusion. The objective of this study is to propose agro-morphological descriptors easy to identify, for a better de

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Dos Santos Aguiar, Francisco Ivo, Francisco Gilvan Borges Ferreira Freitas Júnior, Raiane De Sousa Andrade, and Edmilson Igor Bernado Almeida. "Feed frequency and sensory evaluation of yams." REVISTA AGRO@MBIENTE ON-LINE 13 (September 3, 2019): 173. http://dx.doi.org/10.18227/1982-8470ragro.v13i0.5499.

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Several studies have highlighted the variations in consumption habits, compared to the perspectives on food, social class and lifestyles of society. Among the different food groups, underground vegetables are of great importance in human nutrition as one of the main energy sources available for food. Among them, the yam stands out for its high nutritional and energetic power. In this way, the aim was to define the frequency, consumption profile and yam preference, ‘Chinese’ and ‘São Tome’ varieties. For this, a questionnaire of socioeconomic nature, feeding frequency and sensorial evalua

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Ugwuanyi-Nnadi, Obiageli, Ike Oluka, and Eze Chukwuka. "Processing effect on anti-nutritional and microbiological properties of trifoliate yam flour varieties." Journal on Processing and Energy in Agriculture 28, no. 2 (2024): 68–74. https://doi.org/10.5937/jpea28-52278.

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This research investigated whether 72 hours of fermentation can eliminate or reduce those harmful microorganisms and chemicals in the food content of the trifoliate yam that impose several challenges in human life and exploit and improve the numerous benefits associated with trifoliate yam. Freshly harvested trifoliate yams were subjected to natural fermentation for 72 hours, dried, and milled to produce trifoliate yam flour. The anti-nutritional and microbiological properties of the processed flour were determined. Fermentation significantly reduced the anti-nutritional properties of the trif

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Eruola, Abayomi. "Response of yam varieties to soil moisture regime in Southwestern Nigeria." Italian Journal of Agrometeorology, no. 2 (December 27, 2021): 3–14. http://dx.doi.org/10.36253/ijam-1324.

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A field experiment was conducted on varietal response of white yam to moisture regime in Abeokuta. The experiment comprised three varieties of yam (Efuru, Ise-osi and Oniyere), three mulching options (grass, polythene and unmulched), and two planting dates (early and late). Treatments were replicated three times using RCBD lay-out. Model for selecting planting date involved relating potential evapotranspiration (PE) to precipitation (P) in the form of 0.1PE<P < 0.5PE, partitioned for attaining optimal planting date into early {T1= Σ(P-0.1PE) ≤ 0} and late {T2 = Σ(P-0.5PE) ≤ 0}, respectiv

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Arulogun, Temilade Wemimo, Chinyere Inez Ani, Maryann Ogechi Ugwu, Uzoamaka Genevieve Ugwuanyi, Aloysius Nwabugo Maduforo, and Chinyere Okwara. "Nutrient composition and glycemic response of five species of yam (Dioscorea) commonly consumed in South-East Nigeria." Nigerian Journal of Nutritional Sciences 45, no. 1 (2025): 191–98. https://doi.org/10.4314/njns.v45i1.22.

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Background: Diabetes is one of the leading causes of death in the world especially in developing nations and nutritional management of blood glucose levels is a targeted tool in its prevention and management.Objective: To determine the nutrient composition and glycaemic response of varieties of tubers diascoreaspp(yams) commonly consumed in south-eastern NigeriaMethods: The study adopted a cross sectional design and simple random techniques. Forty participants were recruited for the study andfive species of yam Dioscoreaspp (D.rotundata, D.cavennesis, D. alata and D. dumetoru (white and yellow

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Kundam, Dorcas Nguemo, Julius K. Ikya, and Joseph S. Alakali. "Phytochemicals, Antioxidant, Physico-Chemical and Sensory Properties of Yam-Based Cookies Produced from Flours of Five Yam Varieties." Asian Food Science Journal 23, no. 8 (2024): 22–33. http://dx.doi.org/10.9734/afsj/2024/v23i8732.

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The aspiration to reduce post-harvest losses of yams via the promotion of utilisation of the abundant readily available raw materials for industrial purposes and production of health-enhancing foods prompted this research. This work focused on evaluating the phytochemical, antioxidant, physicochemical and sensory properties of yam-based cookies produced from the flours of five yam varieties. Established standard procedures were used in all analyses. Results showed; Phytochemical compounds such as phenols, flavanoids, alkaloids and tannins were found present in the yam-based cookies in the rang

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Rahbé, Y., G. Febvay, and A. Kermarrec. "Foraging activity of the attine ant Acromyrmex octospinosus (Reich) (Hymenoptera: Formicidae) on resistant and susceptible yam varieties." Bulletin of Entomological Research 78, no. 2 (1988): 329–37. http://dx.doi.org/10.1017/s0007485300013092.

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AbstractA quantitative analysis of the foraging behaviour of Acromyrmex octospinosus (Reich) from three nests on 27 yam varieties of nine species was undertaken in Guadeloupe using a video-microcomputer device. In ants with no previous experience of the variety, foraging inhibition appeared only after at least a whole day of contact with resistant yam leaves. There was a negative correlation between leaf saponin content of the yam species and foraging intensity; however, the main yam sapogenin, the steroid diosgenin, had no effect on foraging behaviour, and tomatin, a steroid-alkaloidal saponi

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Kadekoh, Indrianto, Ramal Yusuf, and Usman Made. "Response of Banggai Yam Plant (Dioscorea alata) and Peanut (Arachys hypogaea) to Liquid Organic Fertilizer in Intercropping system." IOP Conference Series: Earth and Environmental Science 1208, no. 1 (2023): 012043. http://dx.doi.org/10.1088/1755-1315/1208/1/012043.

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Abstract The aim of this study was to examine the effect of liquid organic fertilizer (LOF) on the yield and growth of local peanuts and yams from Banggai (casavva banggai) in an intercropping system. This study was conducted using a two-factor factorial Randomized Block Design. The first factor is the dose of Liquid Organic Fertilizer (LOF) (eco farming) consisting of three levels: Without LO, 3.5 l/ha, and 7 l/ha. The second factor is local yam varieties from Banggai Islands (Banggai sweet potato), namely Pusus, Solopia Patek, and Boan Mela. Each treatment was repeated three times. The resul

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Souleymane, Ganemtore, Camara Brahima, Kamara Adjata, Kassi Koffi Fernand Jean-Martial, and Kone Daouda. "Phenotypic and Pathogenic Characterization of Leaf Fungi of Yam (Dioscorea spp) Varieties Grown In Côte D’Ivoire." Turkish Journal of Agriculture - Food Science and Technology 11, no. 12 (2023): 2229–41. http://dx.doi.org/10.24925/turjaf.v11i12.2229-2241.5897.

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Yam (Dioscorea spp) occupies an important place in the diet of the populations of Côte d’Ivoire. It is a real source of starch and therefore generates enormous commercial potential. However, the decrease in production due to pest attacks represents a real threat to this crop. This study was conducted with the aim of improving yam production in Côte d’Ivoire. To do so, isolations carried out on yam leaves showing symptoms of foliar diseases have allowed us to identify 9 fungal genera. These were Colletotrichum sp., Fusarium sp., Pestalotiopsis sp., Pestalotia sp., Botryodiplodia sp., Aspergillu

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Maziya-Dixon, Busie, Emmanuel Oladeji Alamu, Faustina Dufie Wireko-Manu, and Asiedu Robert. "Retention of iron and zinc in yam flour and boiled yam processed from white yam (D. rotundata) varieties." Food Science & Nutrition 5, no. 3 (2016): 662–68. http://dx.doi.org/10.1002/fsn3.445.

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Tariq, Hamza, Chun Xiao, Lanning Wang, et al. "Current Status of Yam Diseases and Advances of Their Control Strategies." Agronomy 14, no. 7 (2024): 1575. http://dx.doi.org/10.3390/agronomy14071575.

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Yam (Dioscorea spp.) is an important tuber crop consumed globally. However, stable yam production faces challenges from a variety of diseases caused by fungi, nematodes, viruses, and bacteria. Prominent diseases such as anthracnose, leaf spot, yam wilt, dry rot, and crazy root syndrome, currently pose serious threats to yam yields. These diseases not only result in quality degradation but also cause great economic losses. This review summarizes the damages, symptoms, causal agents, and epidemic factors of major yam diseases. It also outlines a comprehensive disease control strategy that includ

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Kundam, Dorcas Nguemo, Julius K. Ikya, Joseph S. Alakali, and Ndi Betrand Bongjo. "Qualitative Assessment of Flours from Five Varieties of Yam in Benue State Nigeria." European Journal of Nutrition & Food Safety 16, no. 8 (2024): 86–97. http://dx.doi.org/10.9734/ejnfs/2024/v16i81497.

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Need to reduce post-harvest losses of Benue yams birthed this research. The study investigated the functional, pasting properties and nutritional composition of high quality flours produced from five Yam varieties in Benue State, Nigeria. The functional and pasting properties and nutritional composition of flours produced from five yam varieties in Benue State, Nigeria. Their bulk density (0.70-0.84 g/cm3), dispersibility (23.17-39.33g/mL), water (0.87-2.53mL/g) and oil (0.93-2.03mL/g) absorption capacities, swelling index (0.92-2.07mL/g) and capacity ranged from 146.30-265.82%., The peak visc

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Okeke, Chineze, Brendan Eje, and P. C. Eze. "Drying characteristics of yam varieties: A comparative analysis." Poljoprivredna tehnika 45, no. 1 (2020): 20–37. http://dx.doi.org/10.5937/poljteh2001020o.

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N'da Kouamé, Valentine, Stephan Handschin, Matthias Derungs, Georges N'guessan Amani, and Béatrice Conde-Petit. "Thermal properties of new varieties of yam starches." Starch - Stärke 63, no. 12 (2011): 747–53. http://dx.doi.org/10.1002/star.201100039.

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Angba, Cynthia W., Richard N. Baines, and Allan J. Butler. "Examining Yam Production in Response to Climate Change in Nigeria: A Co-Integration Model Approach." Social Sciences 9, no. 4 (2020): 42. http://dx.doi.org/10.3390/socsci9040042.

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This study addressed yam production in response to climate change in Cross River State using a co-integration model approach. The specific objectives of this paper are to analyze the trend in yam production, annual precipitation, and annual temperature, and to analyze the impact of climate variables on yam production. Time-series data from 1996 to 2017 was used. Based on the analysis, which constituted a linear trend analysis, co-integration test, and error correction model, the study came up with robust findings. The linear trend analysis for yam production revealed a steady increase in outpu

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Adjei, Emmanuel Amponsah, Williams Esuma, Titus Alicai, et al. "Genotype-by-Environment Interaction of Yam (Dioscorea species) for Yam Mosaic Virus Resistance, Dry Matter Content and Yield in Uganda." Agronomy 12, no. 9 (2022): 1984. http://dx.doi.org/10.3390/agronomy12091984.

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Often, yam cultivars grown in different agro-ecologies show differential responses across production environments, a term known as genotype-by-environment interaction. Such genotype-by-environment interaction makes selection of the best genotypes under varied production environments more complex. This study evaluated twenty yam genotypes in six test environments to assess genotype, environment, and their interaction effects on tuber yield, response to yam mosaic virus, and dry matter content. The experiments were conducted over two seasons across three locations in Uganda, using a randomized c

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DJE, Kouakou Martin, Sana Etienne SILUE, Krou Philippe EBA, and Lucien Patrice KOUAME. "Knowledge State of Two Endemic Varieties of Dioscorea cayenensis-rotundata with Yellow Flesh ("Kounougbé" and "Kangba") Cultivated in the Gbêkê Region and the Level of Chemical Weeding Use." International Journal of Biochemistry Research & Review 33, no. 6 (2024): 350–64. http://dx.doi.org/10.9734/ijbcrr/2024/v33i6918.

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Background: Yam is the main staple food in Ivory Coast and plays a crucial role in food security. However, indigenous yellow-fleshed varieties of the Dioscorea cayenensis-rotundata species, such as "Kounougbé" and "Kangba" are gradually being abandoned in favor of modern varieties. Study Design: A study was conducted in the departments of Bouaké, Béoumi, Sakassou, and Botro, in the Gbêkê region, to assess the knowledge of these varieties, the preference for their tubers, and the use of chemical weeding. Results: The chi-square (χ²) test of independence showed that variables gender, age group,

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Nwagu, Kingsley Ekene, Chidozie Dennis Udechukwu, Michael Chidi Ukaegbu, et al. "Optimization of treatments for the germination and establishment of botanical yam (Dioscorea rotundata) seeds." Acta Scientiarum. Biological Sciences 45 (October 27, 2023): e65008. http://dx.doi.org/10.4025/actascibiolsci.v45i1.65008.

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Botanical yam (Dioscorea rotundata) seeds are currently used by yam breeders to generate and conserve new varieties of yam instead of seed yams (vegetative propagule). Yam seed treatment through scarification is one of the most effective methods of improving seed germination and seedling establishment. This study was carried out under greenhouse condition to determine the best seed treatment for the germination and establishment of botanical yam seeds. The set up involved a soil mixed with carbonized rice husk using five different seed treatments; dry heating (DHS) at 60 0C, mechanical scarifi

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Grace Olubisi, Makinde. "Influence of Some Selected Climatic Variables on Yam Production in Bosso Local Government of Niger State." Asian Journal of Engineering, Social and Health 2, no. 11 (2023): 1434–44. http://dx.doi.org/10.46799/ajesh.v2i11.173.

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This study focused on the influence of Some Selected Climatic Variables on Yam Production in Bosso Local Government of Niger State. Secondary data was obtained from the Nigerian Meteorological Agency, Minna (NIMET). The data acquired include rainfall and humidity data. Also, data for crop was obtained from the Agricultural development program Minna. The result of the study therefore shows that positive relationship exists between yam production and rainfall/relative humidity in the area under study. As for the rainfall, it was observed that in 2020, where the rainfall value was maximum, the ac

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SILUE, Sana Etienne, Kouakou Martin DJE, and Lucien Patrice KOUAME. "Comparative Sensory Evaluation of Various Dishes (Pounded, Fried and Boiled Yam) Made from Two Varieties of Yellow-fleshed Yam ("Kangba" and "Kounougbé") and Three Commonly Consumed Varieties of Yam ("Bètè-bètè", "Krenglè" and "Kponan")." Biotechnology Journal International 29, no. 4 (2025): 61–79. https://doi.org/10.9734/bji/2025/v29i4786.

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This study evaluated the sensory qualities of dishes made from boiled, fried, and pounded yam, derived from two yellow-fleshed yam varieties ("Kounougbé" and "Kangba") and three cultivars ("Bètè-bètè", "Krenglè", and "Kponan"). The analysis revealed significant differences in the sensory characteristics of boiled yams. On the one hand, the "Kounougbé" variety received the highest scores for color (6.85 ± 0.81), firmness (7.15 ± 0.81 in mouthfeel), and fibrosity (7.15 ± 0.93), indicating its overall quality in these attributes. On the other hand, "Kangba" exhibited the best taste acceptability

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Danquah, Eric Owusu, Stella A. Ennin, Joseph N. L. Lamptey, and Patricia P. Acheampong. "Staking Options for Sustainable Yam Production in Ghana." Sustainable Agriculture Research 4, no. 1 (2014): 106. http://dx.doi.org/10.5539/sar.v4n1p106.

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<p>The study evaluated staking options to address the problem of deforestation for sustainable yam production in the Forest and Forest-Savannah Transition zones of Ghana. A split-plot design with three yam varieties (Dente, Water Yam and TDR95/19177 line) and three staking options (No staking, Vertical staking and Trellis with 50% and 30% number of vertical stakes for 2012 and 2013 respectively) as main plots and subplots respectively were used. Results revealed a significant (<em>P</em> <span style="text-decoration: underline;">&lt;</span> 0.05) interaction b

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Omotayo, Temitayo O., Abiodun O. Claudius-Cole, and Antonio Lopez-Montez. "Vine Cuttings Technique for Evaluating the Reaction of Dioscorea rotundata Varieties to Root-Knot Nematodes." Journal of Agricultural Science 10, no. 9 (2018): 76. http://dx.doi.org/10.5539/jas.v10n9p76.

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Root-knot nematodes (Meloidogyne spp.) contribute to low productivity and post harvest losses of white yam (Dioscorea rotundata). This study evaluated yam cultivars for resistance to Meloidogyne spp. using plants generated from single node vine cuttings. Forty accessions of D. rotundata were selected for the study and laid out in a randomized complete block design with 10 plants per replicate, three replicates and two treatments (Meloidogyne-inoculated and uninoculated). Vines were planted in vertically hanging bags and inoculated four weeks after with 500 eggs of Meloidogyne spp. Plants were

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SILUE, Sana Etienne, Kouakou Martin DJE, and Lucien Patrice KOUAME. "Effect of Cultural Practices on the Dry Matter, Ash, Total Sugars, and Reducing Sugars Contents of Two Varieties of Dioscorea cayenensis-rotundata ("Kangba" and "Kounougbé") During Post-Harvest Storage." Journal of Applied Life Sciences International 28, no. 2 (2025): 1–12. https://doi.org/10.9734/jalsi/2025/v28i2680.

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Aims: To assess the influence of some cultural practices on biochemical composition of yam varieties "Kounougbé" and "Kangba" and their performance during post-harvest storage. Study Design: Analysis of Variance (ANOVA) was applied in this study. Place and Duration of Study: Laboratory of Biocatalysis and Bioprocesses, during the period from December 2023 to June 2024. Methodology: Tubers of Dioscorea cayenensis-rotundata varieties Kounougbé and Kangba, cultivated under different cultural practices, were stored for six (6) months after harvest in an aired storage. Some biochemical parameters w

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