Results 41 to 50 of about 1,560 (197)

First controlled progenies checked by isozymic markers in cultivated yams Dioscorea cayenensis-rotundata

Theoretical and Applied Genetics, 1994
As tested progeny have never been obtained, breeding studies on African yams (Dioscorea cayenensisrotundata) are scarce. We report here the first progenies checked by isoenzyme markers. This was made possible by the choice of well-known genitors [one male (cv Zrezrou) and three females (cvs 'Sopéré', 'Dahomey' and 'C 20')] and special hybridization ...
Zoundjihekpon, J., /Hamon, Serge, Bio-Touré, B., Hamon, P.   +3 more
openaire   +4 more sources

Ethephon Promotes Sprouting and Increases Vigor in Yam Seed‐Tubers

New Zealand Journal of Crop and Horticultural Science, Volume 54, Issue 1, March 2026.
The yam (Dioscorea alata L.) is of social and economic relevance for small farmers in Northeast Brazil, but its cultivation is hindered by the low quality of propagative material and a long dormancy period exceeding 90 days. This study evaluated the effect of Ethephon doses and different tuber segments of the São Tomé variety on sprouting and seedling ...
Lucas Kennedy Silva Lima, Angelo Mario Teixeira de Almeida Junior, Taynan de Carvalho Rodrigues, João Victor Pedreira de Sá, Maria de Fátima de Queiroz Lopes   +4 more
wiley   +1 more source

Genetic Variability of Water Yam (Dioscorea alata L.) Tubers From Côte d’Ivoire Based on Agromorphological and Culinary Traits

Advances in Agriculture, Volume 2026, Issue 1, 2026.
Assessment of the genetic diversity within existing germplasm is essential for the sustainable management of plant genetic resources, and the development of improved cultivars. Dioscorea alata is considered as one of the most widespread root and tuber crop species in tropical regions, and significantly contributes to enhancing the income of small‐scale
Lassana Bakayoko, Konan Evrard Brice Dibi, Désiré N’da Pokou, Abou Bakari Kouassi, Brice Sidoine Essis, Boni N’zue, Paterne Angelot Agre, Yacouba Bakayoko, Adou Emmanuel Ehounou, Tchambi Zamble, Akissi Rolande N’goran, Dogoba Coulibaly, Amani Michel Kouakou, Patrick Olusanmi Adebola, Dominique Dufour, Othmane Merah   +15 more
wiley   +1 more source

Relationship between wild and cultivated yams : Case study of yam domestication in Benin [PDF]

, 2006
The Dioscorea cayenensis - Dioscorea rotundata species complex is the most widely cultivated yam in West Africa. It has been described as deriving from wild types belonging to the species Dioscorea abyssinica and D.
Agbangla, Clément, Chaïr, Hâna, Djedatin, Gustave, Noyer, Jean-Louis, Perrier, Xavier   +4 more
core  

Origine et diversité des ignames Dioscrorea rotundata Poir : comment le savoir-faire des paysans africains leur permet d'utiliser la biodiversité sauvage dans l'agriculture [PDF]

, 2010
La production mondiale des ignames est tre`s majoritairement base´e sur l'espèce #Dioscorea rotundata#, dont l'Afrique de l'Ouest est l'aire de culture principale. Cette espèce se divise en trois ensembles agronomiques et génétiques, chacun d'eux composé
Dumont, Roland, Vernier, Philippe, Zoundjihekpon, Jeanne   +2 more
core   +1 more source

Yam mosaic, a new potyvirus infecting Dioscorea cayenensis in the Ivory Coast

Annals of Applied Biology, 1979
SUMMARYThe major disease affecting Dioscorea cayenensis in the Ivory Coast is caused by a virus which was transmitted by mechanical inoculation to some Dioscorea spp. and Nicotiana benthamiana. In extracts of D. cayenensis leaves infectivity was lost after 10 min at 60 d̀C but not 55 d̀C and after dilution to 10‐3 but not 10‐2. A purification procedure
/Thouvenel, Jean-Claude, /Fauquet, Claude   +1 more
openaire   +2 more sources

In Vitro Preservation of Yam (Dioscorea cayenensis D. rotundata complex) for a Better Use of Genetic Resources

Notulae Botanicae Horti Agrobotanici Cluj-Napoca, 2010
Among the food crops, yam takes up quantitatively the first place in the gabonese diet. Unfortunately, it can stay available only 6 to 7 months in the year because of difficulties of harvest and post- harvest.
Paul ONDO OVONO, Claire KEVERS, Jacques DOMMES   +2 more
doaj   +1 more source

Yield stability of water yam (Dioscorea alata L) landraces compared to improved varieties across multiple environments and their culinary qualities in the Republic of Benin

JSFA reports, Volume 5, Issue 7, Page 315-325, July 2025.
Abstract Background In the Republic of Benin, the fresh yam market has two key periods: a time of high availability from August to February, followed by a scarcity from March to July. Fortunately, when Dioscorea rotundata fresh tubers become scarce and expensive, Dioscorea alata (commonly known as Agaabidjan/ Florido) pervades the market and provides a
Myriame Dansi, Yêyinou Laura Estelle Loko, Espérance Codjia, Jeannette Gbémissola Fakorede, Paterne A. Agre, Abel Amegan, Aristide Cossi Adomou, Gbèwonmèdéa Hospice Dassou, Alexandre A. Dansi   +8 more
wiley   +1 more source

Relation entre germination, mise à fleurs et niveau de prélèvement des semenceaux d'ignames du complexe Dioscorea cayenensis-rotundata [PDF]

, 1995
La présente étude met en évidence la précocité des semenceaux de tête pour la levée de germination chez l'ensemble des variétés de #Dioscorea cayenensis-rotundata$ étudiées.
Hamon, P., Hamon, Serge, Tio-Toure, B., Zoundjihekpon, J.   +3 more
core  

NUTRITIONAL COMPOSITION OF DIOSCOREA HISPIDA FROM DIFFERENT LOCATIONS AROUND LEUSER ECOSYSTEM AREA

Jurnal Natural, 2018
Proximate analysis of Dioscorea hispida tubers, collected from five locations around Leuser ecosystem in Aceh Province, showed variations amongst samples.
Sitti Saleha, Nurdin Saidi, Saiful ., Murniana ., Saida Rasnovi, Teuku M. Iqbalsyah   +5 more
doaj   +1 more source