Assessment of hybrid vigour, dominance effect and hybrids regeneration potential in the genus Citrullus

Abstract

The current research was directed to explore hybrid vigour for hybrids resulting from crosses among six genotypes of the genus Citrullus , including C . mucosospermus . For such purpose, the mid parent heterosis and the best parent heterosis were assessed. Non parametric method related to homogeneity Chi-square at 5 % likelihood was applied to compare the regeneration potential of progenies. Student's parametric test at 5% was used to separe two means. Six parental genotypes and 16 hybrid families were evaluated for heterosis. The results showed a heterosis effect for all the characters studied nevertheless, this one varies according to the crossing. The observed hybrid vigour would be due to a superdominance or partial dominance effect. In addition, progeny from crosses have the same regenerative potential on both study sites.

Evaluación de híbridos F1 de chile (Capsicum annuum) provenientes de cruces entre parentales enfocados en obtener variedades tipo “Blocky o Bell Pepper”

“…La existencia de una amplia diversidad en el material genético, propicia el aprovechamiento de variantes tanto cultivadas como silvestres para formar híbridos locales ya que, la semilla híbrida en el país proviene de empresas externas y a un alto costo. La heterosis es positiva cuando la expresión de los caracteres en la progenie es mayor que la de sus progenitores(Angui et al, 2020;Liu et al, 2021).Hasanuzzamanet et al (2013)…”