Dioscorea alata ufifas center for aquatic and invasive plants. Other terms for yam are true yams, greater yam, tropical yam, and name. However the size 200 bp of the trnltrnf gene of accessions dioscorea cayenensis lopka j, dioscorea. Dioscorea species definition of dioscorea species by. All wild related species of the above plants are considered potential alternative hosts of the pest sherwood, 2004 of which there are four known related wild species of. This is an historical document made available through the national agricultural library digital collections. It was introduced to florida from tropical asia or africa in 1905 morton 1976, and it. The air potato management plan was developed to provide a synthesis of the information available on dioscorea bulbifera and its management in florida. Fifteen cultivars were tetraploids, five were hexaploids, and two were octoploids.
This page was last edited on 1 december 2017, at 16. They can be planted 2 to 3 inches deep in 42inch rows. Yams boast a good fiber content, are low in fat, starchy and a bit dry. Chinese yam dioscorea opposita is an important tuberous crop used for both food and medicine. Two numerical taxonomic techniques, single linkage cluster analysis slca and principal components analysis pca were used to study the relationship between dioscorea cayenensis and d. The cultivar group ekoto showed a high level of ploidy. Cryopreservation was applied successfully on two edible yam species, dioscorea.
Air potato yam dioscorea cayenensis lam yellow guinea yam dioscorea dumetorum kunth pax threeleaved or bitter yam dioscorea rotundata poir. Dioscorea alata, also known as greater yam, is one of the major cultivated. The ploidy levels of the twentytwo yam dioscorea cayenensisd. The pathogen can be introduced on infected yam heads, debris. To change the order of your pdfs, drag and drop the files as you want. Dioscorea cayenensis yellow guinea yam dioscorea composita yam dioscorea convolvulacea yam dioscorea dumetorum bitter yam dioscorea elephantipes hottentotbread. Rearrange individual pages or entire files in the desired order. Uniuyo 2018 107 116 pp 107 comparative response of five varieties of dioscorea species yam to rapid micropropagation using single node vine cuttings. Characterization of chemical composition and antinutritional. Dioscorea has presented a challenge to systematists for many years due to its great morphological diversity, dioecy and small flowers wilkin et al.
Transcriptome analysis reveals key pathways and hormone. Starch biosynthesis was certainly a significant target for selection during the domestication of these crops. Pdf evaluation of yam dioscorea cayenensis dioscorea. Establishment of phylogenetic relationship on the basis of. The domestication of yams dioscorea cayenensisrotundata is still an active. Other articles where yellow guinea yam is discussed. Slow food is an international association with members in over 150 countries around the world, promoting access to good, clean and fair food for everyone. Dioscorea cayenensis in world checklist of selected plant families. Pdf yolou mounirou yam dioscorea cayenensisdioscorea rotundata is an important subsistence crop for food security in tropical. The presence of anomocytic, anisocytic and paracytic stomata may be used as a distinguishing feature for the identification and separation of d. Species in this genus are dioecious, twining, and herbaceous to woody vines with single or clustered large tubers, some of which are edible and are known as.
Control of white yam dioscorea rotundata rot pathogen using. Click below on a thumbnail map or name for species profiles. Consumer information about the medication wild yam dioscorea villosa oral, includes side effects, drug interactions, recommended dosages, and storage information. This study characterized the most cultivated and consumed yam dioscorea cultivars within the ghanaian yam germplasm based on their chemical composition and antinutritional factors. Pdf on jan 1, 2014, a a ngwuta and others published response of yellow yam dioscorea cayenensis to shoot growth phytohormones on. Control of white yam dioscorea rotundata rot pathogen. The plants database includes the following 30 species of dioscorea. Preface the air potato management plan was developed to provide a synthesis of the information available on dioscorea bulbifera and its management in florida. Behavior of various types of seeds of two species of yams. Comparative response of five varieties of dioscorea species. After cereals, root and tuber crops are the main source of starch in the human diet. Physicochemical, functional, and macromolecular properties.
It is sometimes treated as separate species from dioscorea cayennensis. Pdf response of yellow yam dioscorea cayenensis to shoot. Dioscorea cayenensis white yam, 67 7 180 3 1609 385 dioscorea rotundata elephant yam, 71 8 1 84 5 6 1555 372 amorphallus aphyllus hausa potato, 76 5 1 91 4 4 1639 392 solenostemon rotundifolius not indigenous to africa yam, 5 170 3 1622 388 dioscorea esculenta. Once files have been uploaded to our system, change the order of your pdf documents. The common name for the genus, yams, will be used when discussing information applicable to 2 or more of the above species. True yam plants are climbing perennial vines with heartshaped leaves. The genus dioscorea includes about 350800 species distributed largely in the tropics, but also in warm and temperate regions. Cultivars of dioscorea cayenensisrotundata complex can be distinguished based on their morphological traits and or their isozyme pattern mignouna et al. Nutrient and antinutrient composition of yellow yam dioscorea. There are several species in the genus dioscorea that are known as yams. Plants profile for dioscorea cayenensis yellow guinea yam. Although, a very important crop for food and medicinal purposes poornima et al. Underground tubers vary in size and shape, averaging 38 pounds but sometimes reaching 60 pounds or more. This handbook covers botany, varieties, various aspects of cultivation, harvest and postharvest information, preparation, and composition for dioscorea rotundata and d.
Pdf joiner allows you to merge multiple pdf documents and images into a single pdf file, free of charge. The institute of food and agricultural sciences ifas is an equal opportunity institution authorized to provide research, educational information and other services only to individuals and institutions that function with nondiscrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. Dioscorea bulbifera is an herbaceous, perennial, twining vine, 20 m long or greater, which is capable of climbing and outcompeting native vegetation schmitz et al. Tubers continue to grow until harvested and can reach a length of 6 to 8 feet and weigh over 100 pounds. Files are available under licenses specified on their description page. This hypervigorous perennial is now a staple in my diet. Transparency documentstransparency data associated with this. Out of these numerous species, the most important edible species are d.
Dioscorea and dioscoreales, supplemented with new transcriptome data, to design custom baits for retrieving hundreds of lscn genes. Several species are widely cultivated in many cultivars including dioscorea alata d. Dioscorea cayenensis dioscorea rotundata complex springerlink. The classification of the cultivated yams dioscorea cayenensis. Using ipgris descriptors, 45 accessions of guinea yamsdioscorea cayenensis lam. Purple yam ubeubi vines flowering in california harvesting dioscorea alata soon duration. Characterization of chemical composition and antinutritional factors in seven species within the ghanaian yam dioscorea germplasm 987 international food research journal 193. Control of white yam dioscorea rotundata rot pathogen using peel extract of water yam dioscorea alata okigbo n.
Information is also included on related species occurring in florida, including winged yam, d. The two most important ones in the pacific are dioscorea alata greater yam, water yam and dioscorea esculenta lesser yam, potato yam. Characterization of chemical composition and antinutritional factors in seven species within the ghanaian yam dioscorea germplasm abstract. Winged yam is known to have disprupted naturalarea plant communities, particularly coastal hammocks in south florida. Both plants are poisonous if eaten raw and must be cooked for a long time before being used in traditional dishes. Studies on the relationship of dioscorea cayenensis and. The board of trustees of the royal botanic gardens, kew. Dioscorea alata sweet yam cul yam anthracnose with dioscorea cayenensis yellow yarn being less susceptible.
Yam is a neglected or underutilized crop in kenya and is mainly. The plant genus comprises of over 600 species with only 10 species producing edible tuber. Mar, 2020 dioscorea cayenensis in world checklist of selected plant families. Dioscorea alata ufifas center for aquatic and invasive. Pdf merge combine pdf files free tool to merge pdf online. Dioscorea bulbifera ea18 obtained after sequencing is due to the fact that the sequence alignment software clc main workbench 7. The presence of trichomes in aloshi and nwanyieri can be used to separate the two. It can survive in a number of different habitats and environmental conditions, but is most commonly found at the edges of rich, mesic bottomland forests, along stream banks and drainageways and near fencerows. Dioscorea a genus of wild tuber crops is one of the major underground medicinal food sources among rural and tribal populace of odisha. Dioscorea sansibarensis pax section macroura, zanzibar yam. Fresh dioscorea cayenensis tubers obtained from bodija market were. Yam traditional pacific island crops research guides. It is closely related to air potato dioscorea bulbifera. Twelve species of dioscorea are reported in odisha of which all except dioscorea alata are wild while the latter is a cultivated one.
Minimizing postharvest losses in yam dioscorea spp. Comparative response of five varieties of dioscorea. All structured data from the file and property namespaces is available under the creative commons cc0 license. Pdf domestication is a traditional farmers practice reported for yams dioscorea sp. A genus of yams, a potatolike root vegetable used in many cultures as a source of dietary carbohydrates. May 17, 2018 dioscorea transversa strong yam national advisory board on climate change and disaster risk reduction, 20. It is found in central africa and introduced to brazil and the caribbean, growing in a clayish soil with organic matter, receiving plenty of water and some to lots of sun. Species in this genus are dioecious, twining, and herbaceous to woody vines with single or clustered large tubers, some of which are edible and are known as yams acevedorodriguez, 2005. Dioscorea cayenensis, dioscorea rotundata, yams, seeding, tuber. Both of these species originated in southeast asia and very early were carried by voyagers into the western pacific and brought d. General information yellow yam is a climbing perennial plant, producing annual stems 10 12 metres from a tuberous rootstock332. Three different ploidy levels 4x,6x, 8x were detected within the samples analysed. Dioscorea oppositifolia is a fast growing twining vine that has escaped from cultivation. Dioscorea villosa, the wild yam, is used as a source of topically applied cosmetics and plantderived steroids.
Please, select more pdf files by clicking again on select pdf files. Using morphological descriptors and starch gel electrophoresis, 393 west african cultivated yam accessions d. After being cut into large pieces and boiled in salted water for 2025 minutes, the tubers become very soft and are. We studied here, the molecular basis of domestication in african yam. Originating in africa, yams dioscorea rotundata are tuberous vegetables very similar in appearance, but not related to sweet potatoes. A customized nuclear target enrichment approach for. Read more about the prescription drug wild yam dioscorea villosa oral. Virusfree plants were obtained by meristem culture in d. The disease manifests itself by the dieback of vines, lesions on leaves and reduction in the size of tubers. The study was prompted by the confusion in the taxonomy of the two taxa. Potyvirus y dioscorea alata togo aphids, mechanical dioscorea alata virus dioscorea green banding mosaic virus potyviridae.
Purple yam ubeubi vines flowering in california harvesting dioscorea alata soon. Dioscorea cayenensis in kew science plants of the world online. Just upload files you want to join together, reorder them with draganddrop if you need and click join files button to merge the documents. Categories vegetables tags dioscorea cayenensis, dioscorea rotundata, dioscorea trifida, how to cook yams, how to eat yams, yams, yams benefits, yams blood cholesterol, yams calories, yams for constipation, yams glycemic index, yams hypertension, yams metabolism, yams minerals, yams nutrition table, yams toxicity, yams vitamins 2 comments. Once you merge pdfs, you can send them directly to your email or download the file to our computer and view. The mapping of traditional products in sierra leone and the publication of this booklet are part of a. Covered with large leaves, it can quickly grow into the tops of tall trees. Six of these edible species are cultivated in africa.
Wild yam dioscorea villosa oral side effects, medical. Yellow yam dioscorea cayenensis important information. From dendrogram it was evident that these five species fell in to two clusters. Article information, pdf download for domestication of yams dioscorea. The ploidy levels of the twentytwo yam dioscorea cayenensis d. Winged yam dioscorea alata is another nonnative, invasive vine in florida. But domestication of these root and tubers crops is also associated with gigantism of storage organs and changes of habitat. Domestication of yams dioscorea cayenensisrotundata within. Dioscorea bulbifera air yam dioscorea cayenensis yellow guinea yam dioscorea composita yam dioscorea convolvulacea yam dioscorea dumetorum bitter yam dioscorea elephantipes. Octa journal of biosciences chloroplast trnttrnf gene constitutes an excellent marker to understand the polymorphism and evolution of dioscorea species joel bleoue1, koffi k. Dioscorea cayenensis lam yellow guinea yam dioscorea dumetorum kunth pax threeleaved or bitter yam dioscorea rotundata poir. Despite a long history of cultivation, the understanding of d.
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