Genetically based differences in photochemical activities of isolated maize (Zea mays L.) mesophyll chloroplasts

Abstract

Photochemical activity of isolated mesophyll chloroplasts was measured as Hill reaction activity (HRA) and photosystem 1 (PS1) activity in three diallel crosses of maize inbred lines and F1 hybrids. Statistically significant differences between genotypestogether with positive heterotic effect in F1 generation were found for both traits studied.

Both the genetic and: complex rust species Puccinia bromina Eriks. is divided in subsp. bromina with two varieties bromina and madritensis and subsp.symphyti-broorum with two varieties symphyti-bromorum and paucipora.