AMMI Stability Analysis and Estimation of Genetic Parameters for Growth and Yield Components in Cassava in the Forest and Guinea Savannah Ecologies of Ghana

Twenty cassava genotypes were arranged in a randomised complete block design with three replications and assessed for growth and yield stability using the additive main effect and multiplicative interaction (AMMI) analysis. Highly significant (P

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Published in:International journal of agronomy 2017-01, Vol.2017 (2017), p.1-10
Main Authors: Asante, Isaac Kwadwo, Gracen, Vernon Edward, Manu-Aduening, Joseph, Adjebeng-Danquah, Joseph, Offei, Samuel Kwame
Format: Article
Language:English
Subjects:
Agricultural production
Agriculture
Cassava
Crops
Genotype & phenotype
Rain
Research centers
Seasons
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container_title International journal of agronomy
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creator Asante, Isaac Kwadwo
Gracen, Vernon Edward
Manu-Aduening, Joseph
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description Twenty cassava genotypes were arranged in a randomised complete block design with three replications and assessed for growth and yield stability using the additive main effect and multiplicative interaction (AMMI) analysis. Highly significant (P
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Highly significant (P&lt;0.001) effects of genotype, environment, and genotype ⁎ environment interaction were observed for all traits studied. The AMMI analysis of variance indicated that genotype accounted for 51% of the total sum of squares for height at first branching followed by environment (33%) and interaction (15%). For fresh root yield, environment effects accounted for 37% of the total sum of squares, whilst genotype and interaction accounted for 32% and 29%, respectively. Genotypic variances for harvest index (HI), plant height, storage root yield, and dry matter content contributed a greater proportion of the phenotypic variance indicating stronger genetic control. This suggests better chance of progress in the genetic improvement of these traits. Genotype MM96/1751 combined high yield with stability according to the yield stability index ranking across environments. On the other hand genotypes UCC 2001/449 and 96/1708 though high yielding were unstable according to AMMI stability value scores. However they can be tested further in more environments to ascertain their specific adaptability for release to farmers for cultivation to boost cassava production and ensure food security.</description><identifier>ISSN: 1687-8159</identifier><identifier>EISSN: 1687-8167</identifier><identifier>DOI: 10.1155/2017/8075846</identifier><language>eng</language><publisher>Cairo, Egypt: Hindawi Publishing Corporation</publisher><subject>Agricultural production ; Agriculture ; Cassava ; Crops ; Genotype &amp; phenotype ; Rain ; Research centers ; Seasons</subject><ispartof>International journal of agronomy, 2017-01, Vol.2017 (2017), p.1-10</ispartof><rights>Copyright © 2017 Joseph Adjebeng-Danquah et al.</rights><rights>Copyright © 2017 Joseph Adjebeng-Danquah et al. 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subjects Agricultural production
Agriculture
Cassava
Crops
Genotype & phenotype
Rain
Research centers
Seasons
title AMMI Stability Analysis and Estimation of Genetic Parameters for Growth and Yield Components in Cassava in the Forest and Guinea Savannah Ecologies of Ghana
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