Results 31 to 40 of about 4,958 (258)

MODELADO DE LAS ISOTERMAS DE DESORCIÓN DEL ÑAME (Dioscorea rotundata)

open access: yesDyna, 2009
Se determinaron experimentalmente los valores de contenido de humedad de equilibrio para ñame (Dioscorea rotundata variedades 9811-089 y 9811-091) a las temperaturas de 45, 55 y 70 °C y humedades relativas entre 10 y 67%. Las muestras se adecuaron en rodajas de 6.38 cm de diámetro y 0.5 cm de espesor.
MONTES, EVERALDO   +5 more
openaire   +4 more sources

Interspecific crossing between yam species (Dioscorea rotundata and Dioscorea bulbifera) through in vitro ovule culture [PDF]

open access: yes, 2016
In the present study, in vitro ovule culture technique was used to obtain interspecific cross combination of Dioscorea rotundata ufenyi and Dioscorea bulbifera wild. Ten days after pollination, ovules were excised and cultured onto 1/2 strength Murashige
Asiedu, Robert   +3 more
core   +1 more source

Viruses incidence on yam (Dioscorea spp.) in five municipalities of sucre, colombia incidencia de virosis en ñame

open access: yesTemas Agrarios, 2014
In Colombia, yams (Dioscorea spp.) are grown in the Caribbean region, with Dioscorea alata L. and Dioscorea rotundata Poir. most cultivated species. One of the limiting factors in these crops are diseases caused by viruses, especially by Potyvirus that ...
Iris R. Payares   +2 more
doaj   +1 more source

PCR-DGGE analysis: Unravelling complex mixtures of badnavirus sequences present in yam germplasm [PDF]

open access: yes, 2017
Badnaviruses (family Caulimoviridae, genus Badnavirus) have emerged as serious pathogens especially affecting the cultivation of tropical crops. Badnavirus sequences can be integrated in host genomes, complicating the detection of episomal infections and
Aliyu Turaki   +12 more
core   +4 more sources

Ploidy level studies on the Dioscorea cayenensis/Dioscorea rotundata complex core set

open access: yesEuphytica, 2009
The Guinea yams, Dioscorea cayenensis Lam. and D. rotundata Poir. (D. cayenensis–D. rotundata complex), represent a highly important crop, widely distributed in the humid and semi-humid tropics. The ploidy levels of 170 accessions of the core set of Guinea yams from West African countries was determined using flow cytometry with
Obidiegwu, J.E.   +7 more
openaire   +2 more sources

Stomatal complex types, stomatal density, and the stomatal index in some species of dioscorea [PDF]

open access: yesArchives of Biological Sciences, 2009
Dioscorea alata L. has three stomatal complex types, namely, paracytic, anisocytic, and tetracytic stomata, with percentage frequency values of 50, 18, and 32, respectively.
Abdulrahaman A.A.   +2 more
doaj   +1 more source

Development of genomic simple sequence repeat markers for yam [PDF]

open access: yes, 2016
Yam ( Dioscorea spp.) is a major staple crop widely cultivated for its starchy tubers. To date, very few marker resources are publicly avail - able as tools for genetic and genomic studies of this economically important crop.
Asiedu, Robert   +8 more
core   +2 more sources

Plant Sex Prediction Using Genetic Markers in Cultivated Yams (Dioscorea rotundata Poir.) in Benin

open access: yesAgronomy, 2020
Dioscorea rotundata Poir. is mainly dioecious but it also produces monoecious individuals. Recently two genetic markers were proposed to determine the sex in this species.
Narcisse Denadi   +4 more
doaj   +1 more source

The effects of calcium fertilizer on anthracnose and Rhizopus tuber rot of yam

open access: yesAnnals of Tropical Research, 2021
Yam (Dioscorea spp) production is beset in the field and in storage by major fungal pathogens, namely Colletotrichum gloeosporioides that causes anthracnose in the field, and Rhizopus stolonifer that causes tuber rot in storage.
Osijo Adedeji Taiwo   +3 more
doaj   +1 more source

Enhancing Regeneration in White Yam (Dioscorea rotundata) Through Friable Embryogenic Callus [PDF]

open access: goldPlant Cell, Tissue and Organ Culture (PCTOC)
Abstract White yam (Dioscorea rotundata) is a critical staple food and an income generating crop in tropical regions. However, its improvement via classical breeding is challenging and time consuming due to an erratic flowering pattern, poor seed set, dioecious nature, low pollen fertility and low seed germination rates. These constraints limit
Easter D. Syombua   +2 more
openalex   +2 more sources

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