Variability, Estimates of Broad-Sense Heritability and Genetic Advance in Waterleaf (Talinum triangulare L Walp)
2024
Chinatu, L.N. | James, S.M. | Okoronkwo, C.M.
Field experiments were carried out in Umudike and Uyo to assess the variability, estimates of heritability, and genetic advance in Talinum triangulare. The trial was a factorial experiment laid out in a randomized complete block design, with factor A as seven cultivars of water leaf and factor B as location (Umudike and Uyo). Data were taken on plant height, number of leaves per plant-1, number of lateral branches per plant-1, number of flowers per plant-1, length of rachis, stem girth, leaf weight per plot-1, and leaf yield ha-1. Analysis of variance of the results from pooled locations (Umudike and Uyo) showed that the cultivars differed significantly (p < 0.05) in plant height, number of leaves per plant-1, number of lateral branches per plant-1, number of flowers per plant-1, length of rachis, leaf weight plot-1, and yield/ ha-1. Large variability existed within the cultivars in plant height, number of leaves, and leaf weight/ plot, as shown by genetic component analysis. Plant height, number of leaves per plant-1, and leaf weight per plot-1 were under the control of additive genes since they had high genotypic coefficient of variation, high broad-sense heritability, and high genetic advance, hence are heritable. Cultivars with high genotypic coefficient of variation, high broad-sense heritability estimates, and high genetic advance for plant height, number of leaves per plant1, and leaf weight plot-1 could be selected for improvement of leaf yield in water leaf. However, high genetic gain could be expected from selection for several leaves per plant-1 and leaf weight plot-1, as these traits are much more under the control of additive genes.
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