An Assessment of Taro Yield and Stability Using Ammi and GGE Biplot Models
Journal Title: Journal of Experimental Agriculture International - Year 2016, Vol 14, Issue 2
Abstract
The yield stability of eight taro (Colocasia esculenta (L) Schott) genotypes across two locations in two years was assessed using the Additive Main Effect and Multiplicative Interaction (AMMI) and Genotype and Genotype-by-Environment (GGE) biplot models. The results of combined analysis of variance for the yield of the taro genotypes grown in 4 environments showed that yield was significantly affected by environments (E), genotypes (G) and genotype by environment interactions (GEI). Differences between genotypes and environments accounted for 24.13% and 56.41% of the total variation respectively while genotype x environment interaction accounted for 9.03% of the total variation. The first interaction principal component axis (IPCA) from the AMMI analysis accounted for 71.10% of variation due to GEI. The biplot accounted for 97.09% of the treatment sum of squares. Both AMMI and GGE models identified NCe 005, NCe 011 and NCe 010 as most stable, but NCe 010 with the highest yield was rated the best genotype across the environments. As a result of the study, E3 was selected as the favourable test environment for the taro yield multi-environment trial. The result showed that application of AMMI and GGE biplots facilitate visual comparison and identification of superior genotype for each target environment.
Authors and Affiliations
C. E. Eze, G. E. Nwofia, J. Onyeka
Keywords
Related Articles
- EP ID EP351228
- DOI 10.9734/JEAI/2016/27052
- Views 94
- Downloads 0
Cointegration and Market Integration: An Application to Hides and ‘Pomo’ Markets in Nigeria
Aim: To investigate long run and short run relationship between the prices of hides and ‘pomo’ in Kano and Lagos markets in Nigeria, using cointegration techniques. Study design: The study made use of purely secondary da...
Genetic Variability of Pigeonpea (Cajanus cajan (L.) Millsp.) for Water Logging and Salinity Tolerance under in vitro and in vivo Conditions
Pigeonpea (Cajanus cajan (L.) Millsp.) genotypes acquired from diverse sources, were screened for water logging and salinity tolerance under laboratory and field conditions. Analysis of variance revealed significant dif...
Changes of Photosynthetic and Antioxidant Activity of Phaseolus vulgaris to Potassium
Greenhouse experiment was conducted with two cultivars of common beans and four concentrations of potassium (1, 2, 10 and 20 millimolar –mM ) were supplied to the soil pots aiming to access variations in plant antioxidan...
Nitrogen and Phosphorus Uptake and Partitioning in Finger Millet as Influenced by Phosphorus Fertilization
Finger millet (Eleusine coracana) production in Eastern Africa remains low due to a variety of factors including soil nutrient depletion. As intensive row-crop production evolves, improvements in managing soil nutrient q...
Garlic (Allium sativum) Powder as an Additive in Broilers (Finisher Phase) Part 2: Growth Performance, Hypocholesterolemic Effect and Economic Implications
This study was designed to investigate the effects of garlic powder as a phyto-additive in broiler diets as a growth promoter with cholesterolemic properties and to also determine the economic implications when garlic po...