Genetic Diversity of the Greater Yam (Dioscorea alata L.) and Relatedness to D. nummularia Lam. and D. transversa Br. as Revealed with AFLP Markers

2005 ◽  
Vol 52 (7) ◽  
pp. 919-929 ◽  
Author(s):  
R. Malapa ◽  
G. Arnau ◽  
J.L. Noyer ◽  
V. Lebot
Keyword(s):  
Genetic Diversity ◽  
Aflp Markers ◽  
Dioscorea Alata ◽  
Greater Yam

Genetic diversity analysis of greater yam (Dioscorea alata L.) genotypes through RAPD and ISSR markers

2020 ◽  
Vol 23 ◽  
pp. 101495
Author(s):  
G. Koteswara Rao ◽  
Chintan Kapadia ◽  
N.B. Patel ◽  
K.D. Desai ◽  
P.N. Narasimha Murthy
Keyword(s):  
Genetic Diversity ◽  
Issr Markers ◽  
Dioscorea Alata ◽  
Diversity Analysis ◽  
Genetic Diversity Analysis ◽  
Rapd And Issr ◽  
Greater Yam

scholarly journals Genome-wide genotyping elucidates the geographical diversification and dispersal of the polyploid and clonally propagated yam (Dioscorea alata)

2020 ◽  
Vol 126 (6) ◽  
pp. 1029-1038
Author(s):  
Bilal Muhammad Sharif ◽  
Concetta Burgarella ◽  
Fabien Cormier ◽  
Pierre Mournet ◽  
Sandrine Causse ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Gene Pool ◽  
Genotyping By Sequencing ◽  
Caribbean Region ◽  
Gene Pools ◽  
Dioscorea Alata ◽  
Allele Frequency Distribution ◽  
Low Genetic Diversity ◽  
Genome Wide ◽  
Greater Yam

Abstract Background and Aims Inferring the diffusion history of many human-dispersed species is still not straightforward due to unresolved past human migrations. The centre of diversification and routes of migration of the autopolyploid and clonally propagated greater yam, Dioscorea alata, one of the oldest edible tubers, remain unclear. Here, we address yam demographic and dispersal history using a worldwide sample. Methods We characterized genome-wide patterns of genetic variation using genotyping by sequencing 643 greater yam accessions spanning four continents. First, we disentangled the polyploid and clonal components of yam diversity using allele frequency distribution and identity by descent approaches. We then addressed yam geographical origin and diffusion history with a model-based coalescent inferential approach. Key Results Diploid genotypes were more frequent than triploids and tetraploids worldwide. Genetic diversity was generally low and clonality appeared to be a main factor of diversification. The most likely evolutionary scenario supported an early divergence of mainland Southeast Asian and Pacific gene pools with continuous migration between them. The genetic make-up of triploids and tetraploids suggests that they have originated from these two regions before westward yam migration. The Indian Peninsula gene pool gave origin to the African gene pool, which was later introduced to the Caribbean region. Conclusions Our results are congruent with the hypothesis of independent domestication origins of the two main Asian and Pacific gene pools. The low genetic diversity and high clonality observed suggest a strong domestication bottleneck followed by thousands of years of widespread vegetative propagation and polyploidization. Both processes reduced the extent of diversity available for breeding, and this is likely to threaten future adaptation.

Genetic Diversity of 118 Sugarcane Germplasm Using AFLP Markers

2014 ◽  
Vol 40 (10) ◽  
pp. 1877
Author(s):  
Feng-Gang ZAN ◽  
Cai-Wen WU ◽  
Xue-Kuan CHEN ◽  
Pei-Fang ZHAO ◽  
Jun ZHAO ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Aflp Markers ◽  
Sugarcane Germplasm

Genetic diversity in ecotypes of Tunisian date-palm (Phoenix dactyliferaL.) assessed by AFLP markers

2007 ◽  
Vol 82 (6) ◽  
pp. 929-933 ◽  
Author(s):  
S. Rhouma ◽  
S. Zehdi-Azouzi ◽  
A. Ould Mohamed Salem ◽  
A. Rhouma ◽  
M. Marrakchi ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Date Palm ◽  
Aflp Markers

Analysis of genetic diversity in crocuses with Carpathian Basin origin using AFLP-markers

2010 ◽  
Vol 61 (Supplement 1) ◽  
pp. 149-155
Author(s):  
G. Surányi ◽  
C. Máthé ◽  
Ágnes Mosolygó ◽  
G. Borbély ◽  
G. Vasas
Keyword(s):  
Genetic Diversity ◽  
Carpathian Basin ◽  
Aflp Markers

A comparative assessment of diversity of greater yam (Dioscorea alata) in China

2019 ◽  
Vol 243 ◽  
pp. 116-124 ◽  
Author(s):  
Wenqiang Wu ◽  
Chong Chen ◽  
Qing Zhang ◽  
Jatoi Zaheer Ahmed ◽  
Yun Xu ◽  
...  
Keyword(s):  
Comparative Assessment ◽  
Dioscorea Alata ◽  
Greater Yam

Genetic diversity of Calycanthaceae accessions estimated using AFLP markers

2007 ◽  
Vol 112 (3) ◽  
pp. 331-338 ◽  
Author(s):  
Ming-Qin Zhou ◽  
Kai-Ge Zhao ◽  
Long-Qing Chen
Keyword(s):  
Genetic Diversity ◽  
Aflp Markers
Sign in / Sign up

Export Citation Format

Share Document