30 research outputs found
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A Proposal for a Training Program to Support Culturally Responsive Professional-Family Interactions
Behavior analysts often work with families from diverse cultural backgrounds. Ideally, behavior analysts and families interact in ways that are responsive to the family's culture and valued outcomes. The data indicate that most behavior analysts, however, come from one dominant cultural group. This is a proposal for training program and evaluation method to support culturally responsive professional-family interactions. This proposed study is designed to be conducted via Zoom-- a cloud-based video conferencing service. A pre-post treatment design is proposed to assess the effects of the training. Hypothetical data were generated to consider the range of effects such a program might have on trainee responses to written/live scenarios. Responses in the observation protocol included written descriptions, empathetic statements, perspective taking statements, and non-verbal behaviors. Overall, the program was designed using evidence-based procedures and is likely to support behavior analysts in training and in practice to improve their interactions with families and become more culturally responsive to groups of people that are from the non-dominant culture
Analysis of genetic diversity in accessions of Irvingia gabonensis (Aubry-Lecomte ex O'Rorke) Baill
Amplified fragment length polymorphism (AFLP) was used to assess genetic diversity and relationships among 15 accessions of Irvingia gabonensis collected from Cameroun, Gabon, and Nigeria. Twelve AFLP+3 primers produced 384 polymorphic fragments. Average genetic distance (AGD) between the 15 accessions was 58.7% (32-88%). AGD and range of genetic distance among accessions from Cameroun, Nigeria and Gabon were 62% (53-76%), 52% (32.3 – 84.8%) and 50% (45- 53%), respectively, indicating more genetic diversity in Cameroun than Nigeria and Gabon. The unweighted pair-group method of the arithmetic average (UPGMA) and principal coordinate analysis (PCO) showed a clear distinction between the Gabon and Nigeria accessions into two separate clusters, with accessions from Cameroun overlapping them. Principal coordinate analysis (PCO) indicated a closer relationship between accessions from Cameroun and Gabon. In general the Cameroun germplasm appears to be a bridge between the genetically isolated Nigeria and Gabon accessions. This overlap of Gabon and Nigerian accessions by the accessions from Cameroun may be an indication that Cameroun is the center of diversity of I. gabonensis and also the primary source of original materials grown in the other countries. More collection in Cameroun is necessary to ensure the optimum collection and preservation of the existing genetic diversity in I. gabonensis.Keywords: Irvingia gabonensis, Accession, amplified fragment length polymorphism, genetic diversit
In Vitro Anti-Listerial Activities of Crude n-Hexane and Aqueous Extracts of Garcinia kola (heckel) Seeds
We assessed the anti-Listerial activities of crude n-hexane and aqueous extracts of Garcinia kola seeds against a panel of 42 Listeria isolates previously isolated from wastewater effluents in the Eastern Cape Province of South Africa and belonging to Listeria monocytogenes, Listeria grayi and Listeria ivanovii species. The n-hexane fraction was active against 45% of the test bacteria with zones of inhibition ranging between 8–17 mm, while the aqueous fraction was active against 29% with zones of inhibition ranging between 8–11 mm. The minimum inhibitory concentrations (MIC) were within the ranges of 0.079–0.625 mg/mL for the n-hexane extract and 10 to >10 mg/mL for the aqueous extract. The rate of kill experiment carried out for the n-hexane extract only, revealed complete elimination of the initial bacterial population for L. grayi (LAL 15) at 3× and 4× MIC after 90 and 60 min; L. monocytogenes (LAL 8) at 3× and 4× MIC after 60 and 15 min; L. ivanovii (LEL 18) at 3× and 4× MIC after 120 and 15 min; L. ivanovii (LEL 30) at 2, 3 and 4× MIC values after 105, 90 and 15 min exposure time respectively. The rate of kill activities were time- and concentration-dependant and the extract proved to be bactericidal as it achieved a more than 3log10 decrease in viable cell counts after 2 h exposure time for all of the four test organisms at 3× and 4× MIC values. The results therefore show the potential presence of anti-Listerial compounds in Garcinia kola seeds that can be exploited in effective anti-Listerial chemotherapy
Flooding effects on yield of an indigenous vegetable (Amaranthus cruentus L. in the Niger Delta region of Nigeria
No abstractKeywords: Amaranthus cruentus; flooding; leaf area; vegetables; yieldGlobal Journal of Agricultural Sciences Vol. 4(1) 2005: 41-4
Rural Households\' Involvement In Social Forestry Practices In Imo State, Nigeria
Social forestry practice is an emerging concept in which rural people engage in tree farming for their own benefit. Rural households in Nigeria have not been able to embrace social forestry because the potentials of planted forests and agro-forestry to alleviate socio-environmental problems are not well understood. The involvement of rural household in social forestry practices in Imo State, Nigeria was evaluated. A structured questionnaire was administered on 80 randomly selected respondents to elicit information on social forestry practices. Data obtained were analysed using descriptive statistics. Results revealed a low level of involvement in social forestry practices. The involvement in social forestry practice is hampered by problems related to land acquisition, lack of funds, information flow, ignorance of importance of social forestry to the rural community. Suggestions were made to address fundamental strategies that can improve the introduction, adoption and operation of social forestry in the study area. Keywords: Rural households, social forestry practices, involvementGlobal Approaches to Extension Practice Vol. 3 (2) 2007: pp. 98-10
Vegetative propagation of indigenous fruit trees: influence of defoliation on survival of rooted marcots (air-layered plants) of Irvingia gabonensis and Dacryodes edulis in Onne, Niger Delta Region of Nigeria
High mortality is one of the problems limiting production of vegetative planting materials in the nursery. Vegetative propagation by air layering (marcotting) of 12 years old Irvingia gabonensis and Dacryodes edulis was carried out at International Institute of Tropical Agriculture (IITA) station in Onne from 1996 to 1997. The objective of this study was to determine the influence of defoliation on survival of rooted marcots of Irvingia gabonensis and Dacryodes edulis. Experiments were conducted with 48 rooted marcots of I. gabonensis and D. edulis. The marcots were set and harvested from mother trees of both species established in an arboretum in 1985. Treatments involved complete removal of all leaves (complete defoliation), removal of half of leaves (partial defoliation) and non-removal of leaves (retention of all leaves in the control treatment). Results indicated that partial defoliation was the most successful treatment with 100 and 66.6% survival percentages for I. gabonensis and D. edulis respectively. Retention of all leaves significantly (
Farmers\' Participation In Ex-Situ Conservation Of Indigenous Fruit Trees In Southern Nigeria
Farmer Participatory Research (FPR) is a new approach, which the World Agro forestry Centre (ICRAF), International Institute of Tropical Agriculture (IITA), NGOs and farmers are using to effectively design and implement community-based conservation project in Nigeria prior to ex-situ conservation. Socioeconomic and market surveys were conducted and base-line data collected in seven communities. Results from seven pilot sites in Southern Nigeria indicate that community farmers readily adopted tree domestication, increasingly acquired skills, easily established community nurseries, enthusiastically identified and conserved economic fruit trees, including Irvingia gabonensis, Irvingia wombolu, Dacryodes edulis, Chrysophyllum albidum, Garcinia kola, in the rural communities. The participatory approach, which involves rural farmers direct involvement in decision making and in the development of suitable practices, is not only effective in reducing genetic loss, but also increases availability and yields of indigenous fruit trees (non-timber forest products).
Journal of Agriculture and Social Research Vol. 4 (2) 2004: 33-4
Domestication of Irvingia gabonensis: 3. Phenotypic variation of fruits and kernels in a Nigerian village
Domestication of Irvingia gabonensis, a fruit tree grown in agroforestry systems in West and Central Africa, offers considerable scope for enhancing the nutritional and economic security of subsistence farmers in the region. Assessments of phenotypic variation in ten fruit, nut and kernel traits were made on twenty-four ripe fruits from 100 Irvingia gabonensis trees in Ugwuaji village in southeast Nigeria, a center of genetic diversity for this species. There were important differences between the young planted trees of this study and the older unplanted trees of a similar study in Cameroon. Significant and continuous tree-to-tree variation was found in fruit mass(69.0–419.8 g), flesh mass (59.5–388.8 g), nut mass (9.5–40.6 g), shell mass (4.9–30.9 g) and kernel mass (0.41–7.58 g); fruit length (49.2–89.3 mm) and width (46.2–100.5 mm) and flesh depth (12.9–31.4 mm), as well as considerable variation in flesh colour, skin colour, fruit taste and fibrosity. Some fruits were considerably bigger than those found in Cameroon. These quantitative results will help in the development of cultivars within participatory approaches to agroforestry tree domestication, and so promote poverty alleviation and sustainable agriculture
Farmers' fruit tree-growing strategies in the humid forest zone of Cameroon and Nigeria
Many studies have stressed the importance of trees to rural households. Few, however, have focused on actual numbers and densities of trees in different land-use systems. Based on community-level participatory research in six communities, semi-structured household interviews and full-farm fruit tree inventories, this study aims to understand farmers’ tree-planting strategies. Relationships between the diversity, number and density of fruit trees and farm size, land-use system, land tenure, distance from the homestead, proximity to the forest, market access and household characteristics are investigated. The key factors determining the differences in tree-growing strategies between communities appear to be market access, land use and access to forest resources. Within communities, differences between individual households were less easy to explain but tenure was important as was farm size. Smaller farms had higher fruit tree densities, a relationship that was particularly strong in communities with good market access. Overall there was a great deal of variability both within and between communities and many of the factors affecting tree-planting decisions were found to be highly inter-related. Despite this complexity, trees on farm play an important role in rural household's livelihoods. Therefore, expansion of tree cultivation should be recognized as a promising pathway to achieve increased income and food production by policy makers and extensionists alike. In addition to improved tree propagation and management techniques, farmers should be strengthened in the processing and marketing of agroforestry tree products and more emphasis should be placed on the development of tree enterprises. By doing so, farmers will be able to earn a more important and consistent income from fruit trees, contributing to the Millennium Development Goals. <br/