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GIBSON, R. W., I. MPEMBE, and R. O. M. MWANGA. "Benefits of participatory plant breeding (PPB) as exemplified by the first-ever officially released PPB-bred sweet potato cultivar." Journal of Agricultural Science 149, no. 5 (2011): 625–32. http://dx.doi.org/10.1017/s0021859611000190.
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SUMMARYNASPOT 11 is a recently released sweet potato cultivar, bred by participatory plant breeding (PPB) in Uganda. It is already grown extensively by farmers who call it Tomulabula. In on-farm and on-station yield trials, Tomulabula yielded as well as the researcher-bred variety NASPOT 1 and sometimes more than the local landraces Dimbuka and New Kawogo, which have also been released. Farmers were asked to what extent Tomulabula, NASPOT 1 (the most popular station-bred cultivar in Uganda) and the local indigenously bred cultivar they were currently growing satisfied 52 attributes previously identified by farmers as beneficial in sweet potato. Those cultivars whose breeding involved farmers (Tomulabula and the local cultivar) were perceived mostly to satisfy a broad range of attributes (i.e. had few ‘Very Bad’ scores) while those which involved researchers (Tomulabula and NASPOT 1) were the most frequently rated as ‘Very Good’ for specific attributes. Instances were observed and accounts given of how Tomulabula is sold at a premium and how it had improved farmers’ lives. These outcomes are attributed to PPB combining the strengths of farmers and researchers. The involvement of the Ugandan National Sweetpotato Program (UNSP) ensures that planting material will be conserved and also available in adequate amounts for official distribution.
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Foley, Jennifer K., Kristina D. Michaux, Bho Mudyahoto, et al. "Scaling Up Delivery of Biofortified Staple Food Crops Globally: Paths to Nourishing Millions." Food and Nutrition Bulletin 42, no. 1 (2021): 116–32. http://dx.doi.org/10.1177/0379572120982501.
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Background: Micronutrient deficiencies affect over one quarter of the world’s population. Biofortification is an evidence-based nutrition strategy that addresses some of the most common and preventable global micronutrient gaps and can help improve the health of millions of people. Since 2013, HarvestPlus and a consortium of collaborators have made impressive progress in the enrichment of staple crops with essential micronutrients through conventional plant breeding. Objective: To review and highlight lessons learned from multiple large-scale delivery strategies used by HarvestPlus to scale up biofortification across different country and crop contexts. Results: India has strong public and private sector pearl millet breeding programs and a robust commercial seed sector. To scale-up pearl millet, HarvestPlus established partnerships with public and private seed companies, which facilitated the rapid commercialization of products and engagement of farmers in delivery activities. In Nigeria, HarvestPlus stimulated the initial acceptance and popularization of vitamin A cassava using a host of creative approaches, including “crowding in” delivery partners, innovative promotional programs, and development of intermediate raw material for industry and novel food products. In Uganda, orange sweet potato (OSP) is a traditional subsistence crop. Due to this, and the lack of formal seed systems and markets, HarvestPlus established a network of partnerships with community-based nongovernmental organizations and vine multipliers to popularize and scale-up delivery of OSP. Conclusions: Impact of biofortification ultimately depends on the development of sustainable markets for biofortified seeds and products. Results illustrate the need for context-specific, innovative solutions to promote widespread adoption.
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Martin, F. W. "BREEDING SWEET POTATOES FOR THE TROPICS: VISION, PLANS, METHODOLOGY AND PROGRESS." Acta Horticulturae, no. 153 (June 1985): 303–12. http://dx.doi.org/10.17660/actahortic.1985.153.43.
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Sunyoto, Marleen, and Roby Andoyo. "Characteristics of sweet potatoes flour used as emergency food based on the type of varieties and the duration of fermentation." Journal of Powder Technology and Advanced Functional Materials 1, no. 1 (2018): 48–56. http://dx.doi.org/10.29253/jptafm.1.1.2018.7.
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Sweet potato breeding at the Padjadjaran University farmland has produced new clones of sweet potatoes, Awachy 5 and Biang Varieties. Both clones contain high starch content, 25.46% and 15.96% respectively, having a good potential to be processed into flour as raw material for emergency food. However, due to poorly functional and amylograph characteristics, the clones need to be modified, one of which through fermentation. The objective of the study was to select the best varieties type of sweet potatoes and to determine the appropriate duration of fermentation to produce fermented sweet potatoes with the best physical, chemical and amylograph characteristics. The research method used was Randomized Block Design, consisting of 8 treatments and 3 repetitions. Awachy 5 and Biang Varieties were fermented for 0, 24, 48 and 72 hours respectively. The results showed that the fermented sweet potatoes flour of Awachy 5 with 72 hours of fermentation have produced the best characteristics of physical, chemical and amylograph, 7.21 ml/g swelling volume, 8.4% solubility, 84.37oC initial gelatinization temperature, 5092 cP peak viscosity, 2471 cP breakdown viscosity, 1089 cP setback viscosity, 68.04% starch content and 3.51% water content.
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Lyu, Ruiqing, Sulaiman Ahmed, Weijuan Fan, et al. "Engineering Properties of Sweet Potato Starch for Industrial Applications by Biotechnological Techniques including Genome Editing." International Journal of Molecular Sciences 22, no. 17 (2021): 9533. http://dx.doi.org/10.3390/ijms22179533.
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Sweet potato (Ipomoea batatas) is one of the largest food crops in the world. Due to its abundance of starch, sweet potato is a valuable ingredient in food derivatives, dietary supplements, and industrial raw materials. In addition, due to its ability to adapt to a wide range of harsh climate and soil conditions, sweet potato is a crop that copes well with the environmental stresses caused by climate change. However, due to the complexity of the sweet potato genome and the long breeding cycle, our ability to modify sweet potato starch is limited. In this review, we cover the recent development in sweet potato breeding, understanding of starch properties, and the progress in sweet potato genomics. We describe the applicational values of sweet potato starch in food, industrial products, and biofuel, in addition to the effects of starch properties in different industrial applications. We also explore the possibility of manipulating starch properties through biotechnological means, such as the CRISPR/Cas-based genome editing. The ability to target the genome with precision provides new opportunities for reducing breeding time, increasing yield, and optimizing the starch properties of sweet potatoes.
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Peloquin, S. J., Georgia L. Yerk, Joanna E. Werner, and Elizabeth Darmo. "Potato breeding with haploids and 2n gametes." Genome 31, no. 2 (1989): 1000–1004. http://dx.doi.org/10.1139/g89-174.
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Potato breeding methods that utilize haploids of Solanum tuberosum group Tuberosum or group Andigena and 2n gametes exploit the genetic diversity, including both valuable traits and allelic diversity, available in exotic germ plasm. Three essential components are involved: (i) the wild and cultivated 2x relatives of the cultivated 4x potato are a valuable source of genetic diversity; (ii) haploids (2n = 2x = 24) of cultivars (2n = 4x = 48) are effective in capturing diversity (germ plasm enhancement); (iii) 2n gametes, resulting from first division restitution, are an efficient method of transmitting this genetic diversity to cultivated 4x potatoes. Heterosis for total and marketable tuber yield and specific gravity occurs in 4x families from crosses between 4x cultivars and 2x haploid Tuberosum × 'Phureja' hybrids. Selected 4x clones from relatively small 4x × 2x families have been released as cultivars based on their earliness and heat tolerance in the tropics. Other 4x clones from 4x × 2x crosses, where the 2x parents were haploid – wild species hybrids, have good yield, excellent tuber type, high specific gravity, low reducing sugars, storage quality, and stress tolerance. The seedling vigor, uniformity, and large tuber yields of progeny from 4x × 2x crosses also makes this an effective breeding method for producing potatoes from true potato seed. This breeding method is also being successfully exploited in alfalfa, red clover, sweet potatoes, yams and several species of grasses, fruits, and ornamentals.Key words: potato, haploids, 2n gametes, germ plasm, allelic diversity.
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Epeju, William Faustine, and Peter Milton Rukundo. "Food Security and Income through Sweet Potato Production in Teso, Uganda." Sustainable Agriculture Research 7, no. 1 (2017): 146. http://dx.doi.org/10.5539/sar.v7n1p146.
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Two relevant studies on food security are referred to in the article. Food insecurity from time to time threatens in Teso sub region which houses a viable Teso agricultural system. One study was done during 2001-2003 in Teso on sweet potato production with 650 persons participating and the second one was done in one disaster affected area of Bududa District nearby during 2012-2016 when 1,142 persons participated. Kiryandongo District where Bududa landslide survivors were resettled in Uganda was included in that study. Participatory methods such as focus group discussions, farm observations, in-depth interviews, and questionnaires were used. Both studies used qualitative and quantitative methods for data analysis. The sweet potato stands second after cassava as the crop for famine and disaster periods in Teso to meet the human right to adequate food to complement the well dried cereals & grain legumes that stored longer. Livestock especially was also one of the prime determinants of food security and income in Teso. Free from cyanides with a good content of affordable Vitamin A from orange fleshed varieties, sweet potatoes in Teso contributed about 61% to the yearly food per capita of the population thus a recommendable crop for sustainable food security and some income in Teso and beyond.
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Anderson, Todd, Theodore Radovich, Jon-Paul Bingham, Nicolas Sinclair, Giselle Bryant, and Michael Benjamin Kantar. "Evaluation of Hawaiian Heritage Sweet Potato (Ipomoea batatas (L.) Lam.) Breeding Lines." Agronomy 11, no. 8 (2021): 1545. http://dx.doi.org/10.3390/agronomy11081545.
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Producing ‘Hawaiian Heritage’ cultivars can raise the market value of locally grown sweet potatoes and increase small farmer earnings in Hawaii. Twelve sweet potato breeding lines (Ipomea batatas L.), derived from the Hawaiian maternal parent ‘Mohihi’, together with four check varieties, were trialed under organic management conditions across three environments (site-year combinations) in Oahu, Hawaii (Waimānalo-2018, Waimānalo-2019 and Poamoho-2019). Trials were harvested five months after planting, consistent with local commercial production standards. There were significant differences in fresh harvest yield, post-curing yield, shape, and quality between environments and cultivars. The ‘Hawaiian Heritage’ lines HM 26 and HM 34 outperformed the commercial standard, demonstrating the potential use of traditional Hawaiian germplasm in modern breeding programs. Additionally, ‘Hawaiian Heritage’ lines (e.g., HM 32 and HM 17) with unique traits favored by the local community may be suitable breeding materials for niche markets.
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Van Campenhout, Bjorn. "Fertility, Agricultural Labor Supply, and Production: Instrumental Variable Evidence from Uganda." Agricultural and Resource Economics Review 45, no. 3 (2016): 581–607. http://dx.doi.org/10.1017/age.2016.26.
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Human fertility can affect agricultural production through its effect on supply of agricultural labor. Using the fact that in traditional, patriarchal societies, sons are generally preferred to daughters, we isolate exogenous variation in the number of children born to a mother and relate it to the agricultural labor supply and production in Uganda, which has a dominant agricultural sector and high fertility. We find that fertility has a sizable negative effect on household labor allocation to subsistence agriculture. Households with lower fertility devote significantly more time to land preparation and weeding; larger households grow less matooke and sweet potatoes. We find no significant effect on agricultural productivity in terms of yield per land area.
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Abong, George, Victoria Ndanyi, Archileo Kaaya, et al. "A Review of Production, Post-harvest Handling and Marketing of Sweetpotatoes in Kenya and Uganda." Current Research in Nutrition and Food Science Journal 4, no. 3 (2016): 162–81. http://dx.doi.org/10.12944/crnfsj.4.3.03.
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Sweetpotato (Ipomea batatas) is a versatile crop that serves the roles of food and nutrition security, cash crop in both raw and processed forms. It is a source of livestock feed and has great potential as a raw material for industrial processing. The potential of sweetpotato has been greatly under exploited by the fact that it has been regarded as a poor man’s food and is mainly grown under marginal conditions for subsistence by most producers, who are rural small-scale farmers in developing countries, such as Kenya and Uganda. Losses in the highly perishable root crop and its leaves are exacerbated by lack of appropriate postharvest knowledge, technologies and facilities. Inadequate information on available cultivars also limits the maximum utilization of the crop and leaves. The current review examines production potential, post harvest handling practices, marketing, and physicochemical and nutritional properties of sweet potatoes.
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Vargas, Pablo Forlan, Dumon Ramiro Zanetti Godoy, Luis Carlos Ferreira de Almeida, and Renata Castoldi. "Agronomic characterization of sweet potato accessions." Comunicata Scientiae 8, no. 1 (2017): 116. http://dx.doi.org/10.14295/cs.v8i1.1864.
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The agronomic characterization of a genotype set is one of the basic steps to start a breeding program, as action strategies to search for new cultivars are defined through the knowledge of these characteristics. Thus, the aim of this study was to rescue and assess agronomic performance in accessions collected in traditional communities. Sweet potatoes were collected among “quilombos”, indigenous villages, native populations and small farmers from Vale do Ribeira. The study was conducted at UNESP, Registro Campus, from February/2013 to August/2014. The experiment was set in a randomized blocks design with 95 accessions, two commercial cultivars, Brazlândia Branca and Brazlândia Roxa (controls), with three repetitions. Total commercial roots production, percentage of commercial roots production, total roots dry matter production, roots dry matter percentage, fresh branches production, total dry matter production in branches and dry matter percentage in branches were assessed. Accessions VR13-62, VR13-61, VR13-44, VR13-11 and VR13-14 demonstrated characteristics of roots for consumption and VR13-11 and VR13-14 for industry consumption due to the high dry matter percentage obtained per hectare; VR13-35, VR13-87 and VR13-22 are adequate for animal feed purposes. VR13-11, VR13-22 and VR13-58 accessions can be used for human and animal consumption; VR13-48 was suitable for home and industry consumption; and VR13-4 and VR13-31 was suitable for animal feed and industry consumption.
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Suherli, Dwi, Sugeng P. Harianto, and Yusuf Widodo. "Kajian Perilaku Dan Pakan Drop In Monyet Hitam Sulawesi (Macaca Nigra) Di Taman Agro Satwa Dan Wisata Bumi Kedaton." Jurnal Sylva Lestari 4, no. 2 (2016): 1. http://dx.doi.org/10.23960/jsl241-8.
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Sulawesi black monkey (Macaca nigra) is endemic animal in Sulawesi. Habitat of sulawesi black monkey are in tropical rain forest, primary and secondary forest. Sulawesi black monkeys are hunted for consumption, trade, and used as pets. The efforts of breeding and protection of the existence of sulawesi black monkey can be performed by insitu or eksitu conservation. For successful breeding, we need information about the behavior and food nutrient content , therefore the study was conducted. The aims of this study are to determine the daily behavior and nutritional value of drop in food in the breeding cage. The research was done in Agro Animal And Garden Tours Bumi Kedaton (TASWBK). The research methods of daily behavioral used focal sampling and nutrient content of sulawesi black monkey food were analyzed by proximate and conversion methods of food composition. The results showed the highest proportion of daily activities of sulawesi black monkey is resting (34.22%), followed by eating (32.89%), moving (24.89%), and others (8%). The type of drop in food provided form muli bananas, carrots, sweet potatoes, cucumbers, kale, spinach, beans and corn. Keywords: Sulawesi black monkey, daily behavior
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Hall, Andy J., and Andrew D. Devereau. "Low-Cost Storage of Fresh Sweet Potatoes in Uganda: Lessons from Participatory and On-Station Approaches to Technology Choice and Adaptive Testing." Outlook on Agriculture 29, no. 4 (2000): 275–82. http://dx.doi.org/10.5367/000000000101293347.
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Kimaro, T. A., and R. Fidelis. "Impacts of Lake Victoria Level Fluctuations to Livelihoods Missungwi District Case Study." Tanzania Journal of Engineering and Technology 30, no. 2 (2007): 98–109. http://dx.doi.org/10.52339/tjet.v30i2.403.
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Lake Victoria experienced drastic levels changes in 2005 causing great inconveniences to lakeside communities. Thisstudy investigated effects of these changes on livelihoods through questionnaire surveys, focused group discussions,interviews and analysis of fish catches, diseases, crops, and lake levels data. Results indicate recession of levels hadvarious socio-economic impacts. The changes caused severe water shortage due to drying up of shallow wells and aremarkable increase in prevalence of schistosomiasis because of increased utilization of lake water. There was noevidence for impact of level changes on malaria and diarrhea. Decline of water levels caused decline in fish catches dueto retreat of water from breeding sites. However receding waters created a new land for cultivation which helped toboost Maize and sweet potatoes production. The results emphasize on ensuring stability of lake levels to avoid negativeimpacts on livelihoods and to maintain ecological integrity of the lake.
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Galvao, Aline C., Carlo Nicoletto, Giampaolo Zanin, Pablo F. Vargas, and Paolo Sambo. "Nutraceutical Content and Daily Value Contribution of Sweet Potato Accessions for the European Market." Horticulturae 7, no. 2 (2021): 23. http://dx.doi.org/10.3390/horticulturae7020023.
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Sweet potatoes (SPs) are considered by the FAO as a primary crop for “traditional agriculture” in the tropics, but in Europe, its consumption is not widespread. However, consumer demand has grown exponentially over the past five years. This study has evaluated the quality and nutrient contents of storage roots of 29 SPs accessions to characterize their role in improving the human diet. Roots were analyzed for nutraceuticals, sugars, and minerals. Results underlined a considerable variability of nutrient content related to color among SPs accessions. The deep-orange-fleshed SPs showed a higher content of β-carotene compared to the light orange- and cream-fleshed ones; 100 g of edible product of HON86 can supply 32.3% of the daily value contribution of vitamin A, followed by the pale orange-fleshed BRA32 and BRA54. The total phenolic content of the purple ecotypes was about two to five times higher than the other genotypes. The calcium content was generally low, whereas, in many accessions, magnesium and phosphorus content reached 20%, or higher of the contribution to the daily value. Such a high variability suggests different use of the different accessions according to their strengths, but might also be used for breeding to improve quality traits of the commercial varieties.
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Kabiri, Stella, Molly Allen, Juduth Toma Okuonzia, Beatrice Akello, Rebecca Ssabaganzi, and Drake Mubiru. "Detecting level of wetland encroachment for urban agriculture in Uganda using hyper-temporal remote sensing." AAS Open Research 3 (May 12, 2020): 18. http://dx.doi.org/10.12688/aasopenres.13040.1.
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Background: Urbanization is an important indicator of economic growth and social change but is associated with environmental degradation. In Uganda, wetlands cover an area of 11% of the country’s land area, of which half have been converted to industry and residential areas, and urban agriculture. Here, we investigate the extent of wetlands lost in two Ugandan cities, Wakiso and Kampala, in a period of 30 years. Secondly, we demonstrate a simple methodology to monitor agriculture on encroached wetlands. Methods: Using a field survey and free remote sensing data from Landsat TM 1986 and Landsat ETM 2016 we classified the rate of wetland loss and encroachment from 1986 to 2016. Using MODIS NDVI 16-day composites at 500-meter spatial resolution, we generated distinctive crops and crop mixtures in the encroached wetlands for urban agriculture using the ISODATA clustering algorithm. Results: Over 30 years, 72,828 ha (73%) of the Wakiso-Kampala wetlands have been lost. Agriculture areas have doubled, of which 16,488 ha (23%) were reclaimed from wetlands. All cultivated agriculture in Kampala was in the wetlands while in Wakiso, 73% of crop agriculture was in the wetlands. Major crops grown in these urban wetlands were banana (20%), sugarcane (22%), maize (17%), Eucalyptus trees (12%), sweet potatoes (10%). Conclusions: The Kampala-Wakiso wetlands have been disappearing at a rate of 2500 ha annually for the last 30 years. At this rate, there will be no wetlands left by 2029. Policy recommendations should promote wetland reclamation programs so as to restore and reconstruct lost and fragmented wetlands; should mandate food security and poverty eradication to convene with ministries regulating wetlands to merge conflicting policies; and should develop polices that are inclusive of challenges faced by the urban poor while at the same time minimize the pressures on urban environments.
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Sserumaga, Julius Pyton, Siraj Ismail Kayondo, Abasi Kigozi, et al. "Genome-wide diversity and structure variation among lablab [Lablab purpureus (L.) Sweet] accessions and their implication in a Forage breeding program." Genetic Resources and Crop Evolution 68, no. 7 (2021): 2997–3010. http://dx.doi.org/10.1007/s10722-021-01171-y.
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AbstractMost orphan crops have not been fully sequenced, hence we rely on genome sequences of related species to align markers to different chromosomes. This hinders their utilisation in plant population improvement programs. Utilising the advances in the science of sequencing technologies, the population structure, relatedness, and genetic diversity among accessions can be assessed quickly for better exploitation in forage breeding programs. Using DArTseq technology, we studied the genetic and structural variation in 65 Lablab purpureus (L.) Sweet conserved gene-bank accessions using 9320 DArTseq-based SNPs and 15,719 SilicoDart markers. These markers had a low discriminating ability with mean polymorphic information content (P.I.C.) of 0.14 with DArTseq-based SNPs and 0.13 with SilicoDart markers. However, the markers had a high mean call rate of 73% with DArTseq-based SNPs and 97% with SilicoDart markers. Analysis of molecular variance revealed a high within populations variance (99.4%), indicating a high gene exchange or low genetic differentiation (PhiPT = 0.0057) among the populations. Structure analysis showed three allelic pools in variable clusters of ΔK = 3 and 6. Phylogenetic tree of lablab accessions showed three main groups with variable membership coefficients. Most pairs of accessions (40.3%) had genetic distances between 0.10 and 0.15 for SilicoDart markers, while for DArTseq-based SNPs, (46.5%) had genetic distances between 0.20 and 0.25. Phylogenetic clustering and minimum spanning analysis divided the 65 accessions into three groups, irrespective of their origin. For the first time, this study produced high-density markers with good genom coverage. The utilisation of these accessions in a forage program will base on the information from molecular-based grouping. The outcomes uncovered the presence of noteworthy measure of variety in Uganda, CIAT and ILRI accessions, thus demonstrating an opportunity for further marker-trait-association studies.
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Faizo, Kasule, Peter Wasswa, Settumba Brasio Mukasa, et al. "Kasule, F Farmer Preference of Cassava Cultivars in Eastern Uganda: A Choice Beyond Disease Resistance." Agricultural Science 2, no. 2 (2020): p169. http://dx.doi.org/10.30560/as.v2n2p169.
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The cassava breeding program in Uganda has released many improved cultivars resistant/tolerant to cassava brown streak disease (CBSD) and cassava mosaic disease (CMD). However, many farmers have continued to use cultivars that are susceptible to these major viral diseases but with diverse attributes. There is a need to understand farmers’ cassava cultivar attribute preferences and CBSD, CMD prevalence on the preferred cultivars. A total of 150 cassava farmer fields (74 in Bukedea district and 76 in Kumi district) located in eastern Uganda were evaluated for farmers’ cultivars and attribute preferences, as well as prevalence of CBSD and CMD on the farmer selected cultivars. The eastern region was of interest in the study, due to it-being the major cassava producing area in the country. In addition, 30 cassava plants of different genotypes were chosen randomly along transects of each field and assessed for CBSD/CMD incidence and severity on preferred cultivars. Results showed that more than 64% of the farmers in eastern Uganda preferred NASE 03 due to its sweet taste and high yields, followed by NASE 14 (21%) because of its high yields. There was a significant (P≤0.001) correlation between cassava cultivars preferred and CBSD severity (r = -0.56), CBSD incidence (r = -0.53), CMD severity (r = -0.51) and CMD incidence (r = -0.39). In corroboration, the most preferred cultivar, NASE 03 was found most susceptible to CBSD and CMD in both Bukedea and Kumi districts with CBSD incidence of 62.2% and 52.7% and CMD incidence of 56.9% and 34.3% respectively. The results showed that CBSD and CMD are prevalent on farmer preferred cassava cultivars, and that farmer cultivar preference depends not only on disease resistance but also other attributes.
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Lourenço, Adriano Mendes, Aline Torquato Tavares, Tiago Alves Ferreira, et al. "POTENCIAL DE CLONES EXPERIMENTAIS DE BATATA-DOCE PARA PRODUÇÃO DE ETANOL." Nativa 6, no. 4 (2018): 352. http://dx.doi.org/10.31413/nativa.v6i4.5613.
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A batata-doce (Ipomoea batatas (L.) Lam.) tem sido reportada como uma das espécies de planta com grande capacidade de converter biomassa em matéria prima para produção de etanol. O objetivo do trabalho foi avaliar o potencial de clones de batata-doce para produção de etanol. Foram avaliados 60 clones de batata-doce para produtividade de raízes, teor de amido nas raízes, produtividade de amido, coloração da casca e da polpa e o rendimento de etanol. O clone BDTO#122,32 e as cultivares Ana Clara e Carolina Vitória com média de 46,77; 42,75 e 41,25 t ha-¹, respectivamente, foram os que mais conseguiram acumular biomassa na forma de raiz. Os clones que apresentam as maiores médias de produtividade de amido por hectare foram BDTO#144.22 e BDTO#100.23, com valores de 15,46 e 14,16% t ha-1, com rendimentos de etanol de 8,33 e 7,63 m³ ha-¹. Os clones BDTO#144.22 e BDTO#100.23 apresentaram as maiores médias de produtividade de amido por hectare e rendimento de etanol, sendo, portanto, os mais promissores para a produção de etanol.Palavras-chave: Ipomoea batatas (L.) Lam, melhoramento genético, seleção, biocombustível. POTENTIAL OF EXPERIMENTAL CLONES OF SWEET POTATO FOR ETHANOL PRODUCTION ABSTRACT:Sweet potato (Ipomoea batatas (L.) Lam.) Has been reported as one of the plant species with great ability to convert biomass into feedstock for ethanol production. The objective of this work was to evaluate the potential of sweet potato clones for ethanol production. Twenty-six sweet potato clones were evaluated for root productivity, root starch content, starch yield, bark and pulp color, and ethanol yield. Clone BDTO # 122.32 and cultivars Ana Clara and Carolina Vitória averaging 46.77; 42.75 and 41.25 t ha-1, respectively, were the ones that were able to accumulate biomass in the root form. The clones presenting the highest starch productivity per hectare were BDTO # 144.22 and BDTO # 100.23, with values of 15.46 and 14.16% t ha-1, with ethanol yields of 8.33 and 7.63 m³ ha-¹. The clones BDTO # 144.22 and BDTO # 100.23 showed the highest averages of starch productivity per hectare and yield of ethanol, thus being the most promising for the production of ethanol.Keywords: Ipomoea potatoes (L.) Lam, breeding, selection, biofuel.
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Yuzaria, Dwi. "PETERNAKAN KAMBING ETAWA DI KABUPATEN TANAH DATAR." Jurnal Pengabdian Sriwijaya 3, no. 2 (2015): 265–73. http://dx.doi.org/10.37061/jps.v3i2.2395.
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Most of Community of Kenagarian Barulak, District Tanjung Baru, Tanah Datar livelihood is farming crops, horticulture and animal husbandry Etawa goat. Waste food crops such as rice, maize, cassava and sweet potatoes are materials forages for goats and waste goat manure can be organic fertilizer on their farms, thus increasing the efficiency of production costs both areas, but the potential is not used optimally in accordance with good farming practice model. One group of farmers in this area are farmers group Boncah Saiyo cooperation with SME Top Boncah in the marketing of milk. The main objective of this IbM activity was Income generating or increased revenues of Boncah group farmers through the introduction of knowledge as good breeding management, knowledge of fodder, knowledge of reproduction, post-harvest technology and marketing management. It is also necessary knowledge of the factors of the marketing mix such as a) the diversification of products into pasteurized milk, yoghurt, ice cream, soap and other products, so that products can be accepted by consumers in the broader market, b) the determination of the selling price which is affordable for consumers, c) the expansion of marketing network both locally and outside the region, even outside the province to increase sales volume, d) the introduction of ways of promotion to farmers in order to introduce processed products to the public by opening outlets in several strategic places of interest and print brochures. The results of IbM's activities for coaching, training and mentoring the breeders group effort to increase the population, milk production, post harvest and marketing their product including : 1) improve the entrepreneurship spirit of breeders as an effort to support the development of the group; 2) business group has the ability of business planning, 3) improve the ability of the breeders group in conducting business operations; 4) enhance cooperation networks business.
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Crosslin, J. M., K. C. Eastwell, C. M. Davitt, and J. A. Abad. "First Report of Seedborne Cherry leaf roll virus in Wild Potato, Solanum acaule, from South America." Plant Disease 94, no. 6 (2010): 782. http://dx.doi.org/10.1094/pdis-94-6-0782c.
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A virus, designated JCM-79, was isolated from wild potato (Solanum acaule Bitt.) plants grown from true seed received at USDA-APHIS Potato Quarantine Program from Peru. JCM-79 was mechanically transmissible to Nicotiana clevelandii and N. tabacum cv. Samsun NN. Symptoms in the original S. acaule were general chlorosis and spreading necrotic lesions. Symptoms in N. tabacum and N. clevelandii included necrotic ringspots on inoculated leaves and oak-leaf patterns or necrotic spots, respectively, on upper leaves. Cultivated potatoes (S. tuberosum) infected with JCM-79 by grafting from N. clevelandii were symptomless but virus was detected by back-inoculation to N. clevelandii. Viral nucleoproteins were purified by differential centrifugation and sucrose density gradient fractionation from N. clevelandii and N. tabacum. Transmission electron microscopy of nucleoproteins revealed isometric particles approximately 25 nm in diameter. Two RNA species of approximately 8,000 and 6,500 nucleotides were obtained from nucleoproteins digested with sodium dodecyl sulfate and Proteinase K. The above characteristics suggested JCM-79 was a nepovirus or nepovirus-like in nature. Reverse transcription (RT)-PCR tests for Cherry rasp leaf virus, genus Cheravirus, which was reported from potato (3), were negative. An approximately 1,600-bp cDNA clone was obtained from RNA of JCM-79 by oligo dT primed reverse transcription and second strand cDNA synthesis. Sequence analysis (GenBank No. GU321989) revealed the closest homology (82%) to nucleotides 327 to 1801 of Accession No. S84125 Cherry leaf roll virus (CLRV), genus Nepovirus. Subsequent RT-PCR tests with CLRV-specific primers (4) resulted in amplification of a 417-bp product from nucleic acid extracts of infected N. clevelandii and N. tabacum. The amplified product from N. clevelandii was cloned and three clones were sequenced in both directions. The consensus sequence (GenBank No. GU321988) showed approximately 90% homology to the 3′ untranslated region of isolates of CLRV including those from birch, walnut, and sweet cherry (GenBank Nos. S84124, Z34265, and AJ877128, respectively). JCM-79 was also detected in extracts of infected plants by ELISA using CLRV-cherry reagents (Bioreba AG, Reinach, Switzerland). These results indicate JCM-79 represents a new variant of CLRV. To our knowledge, this is the first report of CLRV naturally infecting S. acaule. S. acaule is common in the Andean regions of South America and has been used for crosses with S. tuberosum because of its pathogen resistance (1). The fact that JCM-79 is seed transmitted in S. acaule suggests that this virus could be a threat to potato-breeding programs. Another nepo-like virus with properties similar to JCM-79, designated Potato virus U (PVU), was reported from South America, but PVU was not serologically related to CLRV (2). References: (1) K. Hosaka and D. M. Spooner. Theor. Appl. Genet. 84:851, 1992. (2) R. A. C. Jones et al. Phytopathology 73:195, 1983. (3) J. R. Thompson et al. Arch. Virol. 149:2141, 2004. (4) B. Werner et al. Eur. J. For. Pathol. 27:309, 1997.
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A., Zavhorodnii. "DEVELOPMENT OF THE AGRICULTURAL FOOD SPHERE OF THE SOUTHERN REGION." Scientific Bulletin of Kherson State University. Series Economic Sciences, no. 40 (December 24, 2020): 46–50. http://dx.doi.org/10.32999/ksu2307-8030/2020-40-8.
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Global climate change factors and socio-economic consequences of the COVID-19 pandemic affect the current development of the agri-food sector of the Southern region of Ukraine. Agriculture is the main component of the agri-food sector. Economic development, food security of the region, living standards depend on agriculture. Crop and animal husbandry has a high level of development in the Southern region of Ukraine. The index of agricultural products has been fluctuating constantly in recent years. These oscillations have directions of decrease and directions of increase. However, the development of the agri-food sector has significantly decreased this year. The reason for the decrease is very negative climatic conditions, in particular, drought. Yields have fallen sharply, and companies are in a financial crisis. The state can help the affected enterprises and provide state support. Climatic and market conditions determine the need to adjust the development of the agri-food sector. New competitive varieties of grain are being introduced, which are able to ensure sustainable yields of high quality products in arid conditions of the steppe zone of southern Ukraine, work is being carried out on breeding highly productive breeds of sheep, sunflower hybrids are being created. It is important to introduce new cultures for the Southern region of Ukraine. Their cultivation should increase yields in arid climates. It is advisable to grow olives and make olive oil. The region has favorable conditions for growing peanuts, amaranth, saffron, sweet potatoes, chickpeas, asparagus, almonds. It is im-portant to improve the marketing component of traditional crops. The systematic implementation of the state policy of sustainable inno-vation and investment recovery and development with the involvement of public funds and resources of private business will contribute to ensuring the further development of the agri-food sector of the Southern region of Ukraine. The interaction between scientists, private enterprises, farmers, the state and other participants in ensuring the development of the agri-food sector on the basis of partnership is important. This interaction will help improve the implementation of the strategy for improving the agri-food sector. Similar trends will occur in the coming years. Comprehensive strategic reform of the agri-food sector of the southern region of Ukraine is necessary. This includes the improvement of traditional agricultural products. The introduction of innovations is crucial for further development. These measures will lead to the expansion of markets and economic growth.Keywords: agro-food sphere, agriculture, crop production, animal husbandry, viticulture, state support, innovations. Сучасний розвиток агропродовольчої сфери Південного регіону України обумовлений глобальними факторами зміни клімату та соціально-економічними наслідками пандемії COVID-19. Головною складовою агропродовольчої сфери є сільське господарство, яке має значний рівень розвитку в областях Південного регіону України. Протягом останніх років спостерігається щорічні коливання індексу сільськогосподарської продукції як у напрямках зменшення, так і збільшення показників. Однак, визначальні зміни у розвитку відбулись у поточному році, що обумовлене вкрай негативним впливом кліматичних умов на врожайність всіх основних сільськогосподарських культур та призвело до зменшення прибуткові кризового фінансового стану значної кількості господарств, які потребують державної підтримки для подальшого функціонування. Подібні тенденції будуть спостерігатись і в наступні роки, що вимагає комплексного стратегічного реформування агропродовольчої сфери Південного регіону України у напрямку удосконалення традиційної продукції, запровадження інновацій з метою розширення існуючих і формування нових ринків збуту. Ключові слова: агропродовольча сфера, сільське господарство, рослинництво, тваринництво, виноградарство, державна підтримка, інновації.
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McCarthy, Maureen S., and Jack D. Lester. "Consumption of cultivated subterranean plant organs by chimpanzees in a human-dominated landscape." Behaviour, July 19, 2021, 1–16. http://dx.doi.org/10.1163/1568539x-bja10107.
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Abstract Although chimpanzees (Pan troglodytes) are ripe fruit specialists, they sometimes consume other plant parts including subterranean organs like roots and tubers. Such plant parts, which include underground storage organs (USOs), have been found to play a key role in the diets of some chimpanzee populations as well as, potentially, our hominin ancestors. We report the confirmed consumption of subterranean plant organs of three species — sweet potatoes (Ipomoea batatas), yams (Dioscorea alata) and peanuts (Arachis hypogaea), as well as unconfirmed consumption of cassava (Manihot esculenta) — by chimpanzees in a human-dominated landscape in western Uganda. These observations point toward the dietary flexibility of chimpanzees inhabiting anthropogenic landscapes, though mechanisms of novel food acquisition, particularly for subterranean fruits and tubers, are not well understood. Dietary flexibility may help chimpanzees survive as natural forest resources disappear, but simultaneously may bring them into greater conflict with their human neighbours, thereby further imperilling them.
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Omara, Timothy, Erisa Kigenyi, Fortunate Laker, et al. "Effects of Continuous Deep-fat Frying on the Physicochemical Properties of Assorted Brands of Edible Cooking Oils Sold in Greater Metropolitan Kampala." Asian Journal of Applied Chemistry Research, May 25, 2019, 1–13. http://dx.doi.org/10.9734/ajacr/2019/v3i230086.
Full textAbstract:
Aims: To investigate the effects of continuous deep fat frying of white (Irish) potatoes on the physical and chemical attributes of ten brands of edible cooking oils: Fortune Butto, Roki, Tamu, Best Fry, Mukwano, Golden Fry (hard oils); Sunseed, Sunny, Sunvita and Sunlite (soft oils) sold in Kampala, Uganda.
 Place and Duration of the Study: Oil samples of approximate manufacturing dates were obtained from Mega Standard supermarket in Greater Metropolitan Kampala, Uganda. Oil samples were also obtained from local Irish potato fryers in Makindye division of Kampala during ten deep frying cycles. Irish potatoes was procured from Nakasero market, Kampala. Physicochemical analyses were performed at the Quality Control Laboratory of Mukwano Industries Limited, Kampala Industrial area, Kampala. The research was conducted between May 2018 to December 2018.
 Methodology: 400g of Irish potato slices (1cm × 1cm × 3cm) were submersed in 1500mL of oil maintained at 140°C for 6 minutes in an Electric Deep Fryer with a frying time of 10 minutes.The color value (CV) and the acidification of the oils as free fatty acid (FFA), peroxide value (POV), paraanisidine value (AnV), iodine adsorption value (IV) and total oxidation (TOTOX) value before and between ten successive frying cycles were determined using ISO and AOCS official methods.The maximum number of reuses of an oil was estimated from the frying round before its POV or AnV surpassed the maximum permissible statutory or Codex Alimentarius limit for edible oils.
 Results: For fresh oils, the statistical physicochemical parameter ranges were: CV (0.4R 3.4Y-7.7R 70Y), FFA (0.0430±0.30-0.1508±0.30), POV (0.5951±0.03-6.6134±0.23 meqO2/Kg), AnV (0.90±0.01-4.30±0.19) and IV (57.62±0.17-128.35±0.02gI2/100g). By the 10th fry, the ranges were CV (3.0R 23Y-20.4R 70Y), FFA (0.2286±0.01-0.4817±0.01), POV (11.1138±0.01-15.7525±0.01meqO2/Kg), AnV (10.31±0.03-22.16±0.01) and IV (53.66±0.01-126.03±0.02gI2/100g). Considering oxidizability as TOTOX values, frying stability of the selected brands of cooking oils during the frying cycles followed the order: Roki > Fortune Butto > Sunvita > Sunny > Sunlite > Mukwano > Tamu > Best Fry > Golden Fry > Sunseed.
 Conclusion: Reuse of the oils for continuous frying of Irish potatoes on the same day can be done only up to 7 times on average for hard oils and 6 times for soft oils with the oils still regarded as safe for human consumption. Hard oils should be preferred to soft oils for deep frying of Irish potato chips.Further research should elucidate the variation of physicochemical properties of other oil brands on the Ugandan market such as Nile, Fortune, Kimbo, Star Fry, Cow boy and Ufuta and should use other food samples such as fish, cassava, chicken, sweet plantain, dough, meat and edible grasshoppers.