Table 1.
Description of the planting materials evaluated in Ibadan in two seasons.
Table 2.
Sensory quality attributes (SQA) for boiled and pounded yam tuber quality and scales of rating used by panellists in this study.
Table 3.
Analysis of variance (ANOVA) for the sensory traits (pounded yam and boiled yam) in D. alata.
Fig 1.
Correlation coefficients between quality traits and sensory attributes associated with boiled and pounded tuber characteristics.
TOxB: tuber oxidative browning; DMC: dry matter content; BldT: boiled tuber quality index; PndT: pounded tuber quality index; _B: sensory attributes of boiled tuber; _P: sensory attributes of pounded tuber.
Table 4.
Distribution of 404 genotypes in different clusters from each population/family based on population structure analysis.
Fig 2.
Population structure of 404 water yam genotypes (k = 3).
Each bar represents one genotype, while each color stands for a group.
Fig 3.
Hierarchical cluster analysis among 404 water yam genotypes.
Each color represents a genetic group.
Fig 4.
Dimensional reduction analysis on 404 water yam genotypes using 4,646 SNP-based markers.
Each dot represents an individual genotype.
Fig 5.
SNP markers linked with tuber oxidative browning (TOxB).
A: Naïve model; B: Q model; C: Q + K model. The graphs are the Manhattan and Q-Q plots. Grey dotted lines correspond to the threshold (LOD = 3). Pink SNP hit: identified by all six multi-locus methods; Blue SNP hit: identified by at least two of the six multi-locus models.
Fig 6.
SNP markers associated with dry matter content.
A: Naïve model; B: Q model and C: Q + K model. The graphs are the Manhattan and Q-Q plots. Grey dotted lines correspond to the threshold (LOD = 3). Pink SNP hit: identified by all six multi-locus methods; Blue SNP hit: identified by at least two of the six multilocus models.
Fig 7.
SNP markers linked with boiled tuber quality.
A: Naïve model; B: Q model and C: Q + K model. The graphs are the Manhattan and Q-Q plots. Grey dotted lines correspond to the threshold (LOD = 3). Pink SNP hit: identified by all six multi-locus methods; Blue SNP hit: identified by at least two of the six multi-locus models.
Fig 8.
SNP markers associated with pounded tuber quality.
A: Naïve model; B: Q model and C: Q + K model. The graphs are the Manhattan and Q-Q plots. Grey dotted lines correspond to the threshold (LOD = 3). Pink SNP hit: identified by all six multi-locus models; Blue SNP hit: identified by at least two of the six multi-locus models.
Table 5.
Putative candidate genes associated with tuber quality and sensory traits of water yam (D. alata).