Poliana Regina Carloni Di Prado
Abstract:
The consumption of pepper genus Capsicum is in increasing demand worldwide. On the other hand, few studies have been done with the purpose of preserving the genetic heritage of these species and also its use in breeding programs. The objective was to estimate the genetic parameters of a goat pepper population (Capsicum chinense Jacq) from southwestern Goiás and the selection gains made in this population based on six selection criteria. Twenty-seven genotypes and three commercial controls were used. The experiment was conducted in a randomized block design with three replications, four plants per plot and 1.2x0.8m spacing. The estimated parameters were genetic variance σ²g, environmental σ²e, phenotypic σ²f, the coefficient of genetic variation CVg%, the ratio between the coefficient of genetic variation and environmental CVg/CVe and heritability in the broad sense h2. The criteria used were; selection I: reduce days for flowering, II: increase weight at first harvest, III: increase fruit yield, IV: increase weight of 10 fruits, V: reduce weight of 10 fruits and VI: reduce days to maturation. CVg% was above 10% for most traits, CVg/CVe was above 1 for most traits indicating that genetic factors are predominant over environmental factors. H2 ranged from 54.27 to 99.66%. The selection criteria used that presented selection gains were I, III, IV, VI with 10.30, 69.59, 181, 1.31% respectively realized gain for selected characteristic.
