Tetraploidization in citrus rootstocks: effect of genetic constitution and environment in chromosome duplication Tetraploidization in citrus rootstocks: effect of genetic constitution and environment in chromosome duplication

Abstract -The objective of this study was to identify polyploid plants from citrus rootstocks and to evaluate the influence of the 67%) tetraploids, respectively. Differences in the number of tetraploid plants among genotypes and locations were observed in field progenies of 'C 37' (2.12%) and 'C 13' (2.04%) and in greenhouse progenies of 'C 13' (15.52%) and 'C 37' (6%). The frequency of autotetraploidization events in citrus rootstocks is common and appears to be associated to genetic constitution and environmental conditions