Diversity of Yam (<i>Dioscorea spp</i>.) Populations in South Western Region of Cameroon

Joseph Ako Oben; Andrew Enow Egbe; George Bindeh Chuyong; Pascal Tabi Tabot

doi:doi:10.11648/j.ajls.20160406.17

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Diversity of Yam (Dioscorea spp.) Populations in South Western Region of Cameroon

Joseph Ako Oben, Andrew Enow Egbe, George Bindeh Chuyong, Pascal Tabi Tabot

Published in American Journal of Life Sciences (Volume 4, Issue 6)

Received: 15 November 2016 Accepted: 28 November 2016 Published: 6 January 2017

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Abstract

Yams are Dioscoreaceae grown in the tropics and sub-tropics and used as food and for related pharmaceutical properties. The South Western Region of Cameroon is a major yam producing zone. This study which evaluates morphological variability between ten linguistically different yam types grown in South Western Cameroon will serve as a necessary step for subsequent genetic study of the species. The yams, collected from nine sites, were planted in a completely randomized design in four locations. Analysis of data on nine morphological vines traits reveals that, the yam types constituted five main clusters. Cluster 1 with 61.3% similarity consists of five accessions of D. rotundata - Ikom, Calabar, White, Agar and Igbo yams. This cluster has three sub-groups with 84.9% similarity. Cluster 2 consists of Yellow yam (D. cayenensis) with 48.5% similarity to members of Cluster 1. Ghana Water yam and Swệt yam constitute Cluster 3 with 83.4% similarity while Sugar yam and Water yam constitute the 4th and 5th clusters respectively. The ten yam types are actually five cultigens –rotundata, rotundata-cayenensis complex, cayenensis, dumetorum and alata; and the significant variability (P<0.05) observed with respect to the morphological characters evaluated may be the basis for the linguistic polymorphism noticed in the naming of the different yam types. Although genetic analysis is recommended to determine firm similarities, the establishment of clear links remains problematic because of the high hybridisation noticed among members of the Dioscoreaceae; and considering that yams types were introduced in the zone from different lands over many centuries.

Published in	American Journal of Life Sciences (Volume 4, Issue 6)
DOI	10.11648/j.ajls.20160406.17
Page(s)	187-194
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2017. Published by Science Publishing Group

Keywords

Dioscoreaceae, Clusters, Linguistic Polymorphism, Similarities, Morphometric Analysis

References

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APA Style

Joseph Ako Oben, Andrew Enow Egbe, George Bindeh Chuyong, Pascal Tabi Tabot. (2017). Diversity of Yam (Dioscorea spp.) Populations in South Western Region of Cameroon. American Journal of Life Sciences, 4(6), 187-194. https://doi.org/10.11648/j.ajls.20160406.17

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ACS Style

Joseph Ako Oben; Andrew Enow Egbe; George Bindeh Chuyong; Pascal Tabi Tabot. Diversity of Yam (Dioscorea spp.) Populations in South Western Region of Cameroon. Am. J. Life Sci. 2017, 4(6), 187-194. doi: 10.11648/j.ajls.20160406.17

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AMA Style

Joseph Ako Oben, Andrew Enow Egbe, George Bindeh Chuyong, Pascal Tabi Tabot. Diversity of Yam (Dioscorea spp.) Populations in South Western Region of Cameroon. Am J Life Sci. 2017;4(6):187-194. doi: 10.11648/j.ajls.20160406.17

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@article{10.11648/j.ajls.20160406.17,
  author = {Joseph Ako Oben and Andrew Enow Egbe and George Bindeh Chuyong and Pascal Tabi Tabot},
  title = {Diversity of Yam (Dioscorea spp.) Populations in South Western Region of Cameroon},
  journal = {American Journal of Life Sciences},
  volume = {4},
  number = {6},
  pages = {187-194},
  doi = {10.11648/j.ajls.20160406.17},
  url = {https://doi.org/10.11648/j.ajls.20160406.17},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajls.20160406.17},
  abstract = {Yams are Dioscoreaceae grown in the tropics and sub-tropics and used as food and for related pharmaceutical properties. The South Western Region of Cameroon is a major yam producing zone. This study which evaluates morphological variability between ten linguistically different yam types grown in South Western Cameroon will serve as a necessary step for subsequent genetic study of the species. The yams, collected from nine sites, were planted in a completely randomized design in four locations. Analysis of data on nine morphological vines traits reveals that, the yam types constituted five main clusters. Cluster 1 with 61.3% similarity consists of five accessions of D. rotundata - Ikom, Calabar, White, Agar and Igbo yams. This cluster has three sub-groups with 84.9% similarity. Cluster 2 consists of Yellow yam (D. cayenensis) with 48.5% similarity to members of Cluster 1. Ghana Water yam and Swệt yam constitute Cluster 3 with 83.4% similarity while Sugar yam and Water yam constitute the 4th and 5th clusters respectively. The ten yam types are actually five cultigens –rotundata, rotundata-cayenensis complex, cayenensis, dumetorum and alata; and the significant variability (P<0.05) observed with respect to the morphological characters evaluated may be the basis for the linguistic polymorphism noticed in the naming of the different yam types. Although genetic analysis is recommended to determine firm similarities, the establishment of clear links remains problematic because of the high hybridisation noticed among members of the Dioscoreaceae; and considering that yams types were introduced in the zone from different lands over many centuries.},
 year = {2017}
}

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TY - JOUR
T1 - Diversity of Yam (Dioscorea spp.) Populations in South Western Region of Cameroon
AU - Joseph Ako Oben
AU - Andrew Enow Egbe
AU - George Bindeh Chuyong
AU - Pascal Tabi Tabot
Y1 - 2017/01/06
PY - 2017
N1 - https://doi.org/10.11648/j.ajls.20160406.17
DO - 10.11648/j.ajls.20160406.17
T2 - American Journal of Life Sciences
JF - American Journal of Life Sciences
JO - American Journal of Life Sciences
SP - 187
EP - 194
PB - Science Publishing Group
SN - 2328-5737
UR - https://doi.org/10.11648/j.ajls.20160406.17
AB - Yams are Dioscoreaceae grown in the tropics and sub-tropics and used as food and for related pharmaceutical properties. The South Western Region of Cameroon is a major yam producing zone. This study which evaluates morphological variability between ten linguistically different yam types grown in South Western Cameroon will serve as a necessary step for subsequent genetic study of the species. The yams, collected from nine sites, were planted in a completely randomized design in four locations. Analysis of data on nine morphological vines traits reveals that, the yam types constituted five main clusters. Cluster 1 with 61.3% similarity consists of five accessions of D. rotundata - Ikom, Calabar, White, Agar and Igbo yams. This cluster has three sub-groups with 84.9% similarity. Cluster 2 consists of Yellow yam (D. cayenensis) with 48.5% similarity to members of Cluster 1. Ghana Water yam and Swệt yam constitute Cluster 3 with 83.4% similarity while Sugar yam and Water yam constitute the 4th and 5th clusters respectively. The ten yam types are actually five cultigens –rotundata, rotundata-cayenensis complex, cayenensis, dumetorum and alata; and the significant variability (P<0.05) observed with respect to the morphological characters evaluated may be the basis for the linguistic polymorphism noticed in the naming of the different yam types. Although genetic analysis is recommended to determine firm similarities, the establishment of clear links remains problematic because of the high hybridisation noticed among members of the Dioscoreaceae; and considering that yams types were introduced in the zone from different lands over many centuries.
VL - 4
IS - 6
ER -

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Author Information

Joseph Ako Oben

Department of Botany and Plant Physiology, University of Buea, Buea, Cameroon
Andrew Enow Egbe

Department of Botany and Plant Physiology, University of Buea, Buea, Cameroon
George Bindeh Chuyong

Department of Botany and Plant Physiology, University of Buea, Buea, Cameroon
Pascal Tabi Tabot

Department of Agriculture, Higher Technical Teachers Training College Kumba, University of Buea, Buea, Cameroon

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APA Style

Joseph Ako Oben, Andrew Enow Egbe, George Bindeh Chuyong, Pascal Tabi Tabot. (2017). Diversity of Yam (Dioscorea spp.) Populations in South Western Region of Cameroon. American Journal of Life Sciences, 4(6), 187-194. https://doi.org/10.11648/j.ajls.20160406.17

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ACS Style

Joseph Ako Oben; Andrew Enow Egbe; George Bindeh Chuyong; Pascal Tabi Tabot. Diversity of Yam (Dioscorea spp.) Populations in South Western Region of Cameroon. Am. J. Life Sci. 2017, 4(6), 187-194. doi: 10.11648/j.ajls.20160406.17

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AMA Style

Joseph Ako Oben, Andrew Enow Egbe, George Bindeh Chuyong, Pascal Tabi Tabot. Diversity of Yam (Dioscorea spp.) Populations in South Western Region of Cameroon. Am J Life Sci. 2017;4(6):187-194. doi: 10.11648/j.ajls.20160406.17

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@article{10.11648/j.ajls.20160406.17,
  author = {Joseph Ako Oben and Andrew Enow Egbe and George Bindeh Chuyong and Pascal Tabi Tabot},
  title = {Diversity of Yam (Dioscorea spp.) Populations in South Western Region of Cameroon},
  journal = {American Journal of Life Sciences},
  volume = {4},
  number = {6},
  pages = {187-194},
  doi = {10.11648/j.ajls.20160406.17},
  url = {https://doi.org/10.11648/j.ajls.20160406.17},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajls.20160406.17},
  abstract = {Yams are Dioscoreaceae grown in the tropics and sub-tropics and used as food and for related pharmaceutical properties. The South Western Region of Cameroon is a major yam producing zone. This study which evaluates morphological variability between ten linguistically different yam types grown in South Western Cameroon will serve as a necessary step for subsequent genetic study of the species. The yams, collected from nine sites, were planted in a completely randomized design in four locations. Analysis of data on nine morphological vines traits reveals that, the yam types constituted five main clusters. Cluster 1 with 61.3% similarity consists of five accessions of D. rotundata - Ikom, Calabar, White, Agar and Igbo yams. This cluster has three sub-groups with 84.9% similarity. Cluster 2 consists of Yellow yam (D. cayenensis) with 48.5% similarity to members of Cluster 1. Ghana Water yam and Swệt yam constitute Cluster 3 with 83.4% similarity while Sugar yam and Water yam constitute the 4th and 5th clusters respectively. The ten yam types are actually five cultigens –rotundata, rotundata-cayenensis complex, cayenensis, dumetorum and alata; and the significant variability (P<0.05) observed with respect to the morphological characters evaluated may be the basis for the linguistic polymorphism noticed in the naming of the different yam types. Although genetic analysis is recommended to determine firm similarities, the establishment of clear links remains problematic because of the high hybridisation noticed among members of the Dioscoreaceae; and considering that yams types were introduced in the zone from different lands over many centuries.},
 year = {2017}
}

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