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Genetic Variability, Heritability and Correlation of Some Morphological and Yield Components Traits in Potato (Solanum tuberosum L.) Collections

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American Journal of Plant Sciences 2023年第9期14卷 1029-1042页

作者： 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 Unity of Genetic and Plant Breeding Department of Plant Biology Faculty of Science University of Yaoundé 1 Yaoundé Cameroon Department of Biological Sciences Applied to Agriculture Faculty of Science University of Ebolowa Ebolowa Cameroon Plant Biology and Physiology Laboratory Department of Botany Faculty of Science University of Douala Douala Cameroon Department of Horticulture and Plant Sciences Jimma University College of Agriculture and Veterinary Medicine Jimma Ethiopia Plant Production Unit Mbalmayo Agricultural Research Centre (CRAM) Institute of Agricultural Research for Development Mbalmayo Cameroon

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.

关键词： Agroecological Zone Genetic Variability Heritability Solanum tuberosum Yield

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