Cytogenetical investigations in Rutaceae. II. Meiotic studies in three intergeneric hybrids of Citrus.

Abstract

Meiotic studies were conducted in two Citrus-Poncirus and one Citrus-Fortunella intergeneric hybrids. Regular bivalent formation and equal distribution of chromsomes at different stages of meiosis indicated similarity between the genomes of Citrus-Poncirus and Citrus-Fortunella. Cytomixis and secondary association of bivalents indicated a hybrid and polyploid nature of these genera. The basic chromosome number of Citrus and allied genera was reconfirmed as n=3.