GENETIC CONTROL OF BODY TRAITS AND GROWTH PATTERN IN LEBISTES

Abstract
Genetic variability and growth pattern of metric traits were studied in inbred lines of L. reticulatus (Peters) obtained by crossing full sibs in 3 generations. Sub-sublines with different growth rates of body length and body weight were identified; on the whole inbred population a genetic analysis was performed for both traits at different ages on raw data and on data adjusted for growth rate regression. Both analyses reveal the presence of a great amount of genotype-environment interaction and of a certain amount of genetic variation for body traits. The differences concerning the genetic components of variation observed in the 2 analyses within each population indicate an influence of the different growth rates of sub-sublines on the detection of genetic variability.