TITLE:
Genetic Variability, Heritability and Correlation of Some Morphological and Yield Components Traits in Potato (Solanum tuberosum L.) Collections
AUTHORS:
Benoit Constant Likeng-Li-Ngue, Aladji Abatchoua Madi Madi Ibram, Ndiang Zenabou, Florent Boris Zoa, Mbo Nkoulou Luther Fort, Molo Nathalie, Essubalew Getachew Seyum, Hermine Ngalle Bille, Joseph Martin Bell
KEYWORDS:
Agroecological Zone, Genetic Variability, Heritability, Solanum tuberosum, Yield
JOURNAL NAME:
American Journal of Plant Sciences,
Vol.14 No.9,
September
26,
2023
ABSTRACT: The study was conducted with the main objective to evaluate the genetic
variability, heritability, and clustering pattern exploration of morphological
and yield related traits in potato (Solanum tuberosum L.) collections in the bimodal
rainfall agroecological zone of Cameroon using a Randomized Complete Block
Design (RCBD) with three replications. The data obtained on morphological and
yield traits were subjected to analysis of variance (ANOVA). The results showed
that the viability rate of the collections varied from 77.78% to 96.55% respectively for the Maffo and Desiree collections, while the greatest number of
tubers per plant varied from 4 to 18 respectively for Synergie and Desiree. The emergence rate varies from 60% to 1.66% respectively for Maffo et Doza collections. However, Desiree presents the highest TL (96.55) while Maffo shows the lowest value (77.78%). The yield per hectare varied from 1.14 to 9.3
t/h for Maffo and Doza respectively. For all the characteristics
observed, Phenotypic Coefficients of Variation (PCV) were higher than Genotypic
Coefficients of Variation (GCV) suggesting the role of environment in the
expression of traits under observation. The highest GCV and PCV 47.55 and 58.94
respectively were observed for Diameter at the collar (DC). Most of the traits
showed high GAM (>20%)) except Average Tuber Length (ATL) with a moderate
value (19.8). In terms of vegetative development, the Desiree variety
showed the highest performance. Based on the growth and yield results, Doza seems to be the most recommendable crop in the study area.