Variability and Inter-Relationships between Yield and Associated Traits in Taro (Colocasia esculenta (L.) Schott)
Journal Title: Journal of Experimental Agriculture International - Year 2016, Vol 14, Issue 2
Abstract
The genetic variability and inter-relationships between yield and associated traits in some taro (Colocasia esculenta (L.) Schott) genotypes were investigated in two years across two locations. The experiment was laid out as randomized complete block design with three replications in each location. Data were collected on the growth and yield attributes of taro. The genetic variability of the attributes measured in both locations was studied to estimate the genotypic (GCV) and phenotypic (PCV) coefficients of variation, broad sense heritability (h2b) and genetic advance (GA). Considering GCV, h2b and GA simultaneously as the best estimators of the amount of advance expected from selection, number of secondary shoots/plant and number of leaves/plant gave the highest values in each of the locations. This shows that a satisfactory selection program for improvement of these genotypes through these traits is possible at each specific location. Correlation analysis showed that all the traits measured were significantly and positively correlated with taro yield except corm and cormel lengths. Number of cormels/plant had the strongest positive correlation with taro yield (r = 0.699**) followed by cormel weight (r = 0.624**). Path-coefficient analysis and stepwise multiple regression analysis revealed cormel weight and number of cormels/plant as the biggest determinants of taro yield, both contributing about 72% of the total variation in yield. This suggests that these two characters are important selection indices for taro yield improvement.
Authors and Affiliations
C. E. Eze, G. E. Nwofia
Keywords
Related Articles
- EP ID EP351238
- DOI 10.9734/JEAI/2016/27053
- Views 101
- Downloads 0
Changes in Physicochemical Parameters during Storage of the Inflorescence Sap Derived from Four Coconut (Cocos nucifera L.) Varieties in Côte d’Ivoire
Aim: The study investigated the changes in the main physicochemical parameters of the coconut inflorescence sap derived from MYD, WAT, PB 121+ and PB 113+ varieties during storage. Place and Duration: Marc Delorme Resea...
Influence of Moringa Seed Powder and Liquid Gold on Available Phosphorus and Potassium Pools of a P-deficient Alfisol at Samaru, Nigeria
The low fertility constraint of the soils in the northern Guinea savannah of Nigeria necessitates the application of external nutrient supplements for sustainable crop production. An incubation study was undertaken to ev...
Assessing the Resistance of Three Tomato Varieties to Bacterial Wilt and Stem Rot
The aim of this study was to compare the level of resistance of two new hybrids (F1 Nadira and F1 Jaguar) with the popularly known variety Rio Grande against Pseudomonas solanacearum (causal agent of bacterial wilt) and...
Correlation between Intake and Ingestive Behaviour of Confined Holstein-Zebu Crossbred Heifers
The aim of the study was to evaluate the correlation between variables referring to feed intake and behaviour of confined Holstein-Zebu crossbred heifers. The experiment was conducted at the dairy unit of the Southwest B...
Chronic Problems of Turkish Farmers
Turkish farmers who engage in soil cultivation have to face a number of serious problems, ranging from the loss of agricultural land to the climate change. Moreover, they cannot earn a living from agriculture due to high...